Monkey D. Luffy/Relationships

Family
Luffy's family consists of some of the most powerful and infamous people. His biological family consists of his grandfather who is famed marine and his father is considered to be the most dangerous man in the world. In his childhood, Luffy befriended two boys who became like brothers to him. Whenever people learn of a member of Luffy's family, the reaction is usually shock or fear that he is connected to such dangerous people.

Monkey D. Dragon
Luffy discovered that Dragon the Revolutionary, the most wanted man in the world, is his father. The two have yet to talk to each other. In fact, their only meeting was when Dragon rescued Luffy from being captured by Smoker in Loguetown, and the only thing Luffy said to him was "who's there?" while being pinned headfirst to the ground by Smoker. It is highly probable that Dragon cares for his son's life because he saved him in Loguetown and he always looked towards East Blue where his family lived. Dragon seems to expect great things from Luffy, much like his grandfather. However, unlike Garp, Dragon seems to be in favor of Luffy's decision to lead his own crew as a pirate, although he believes they will meet someday. Luffy was unaware of who Dragon was before he was told by Garp and did not understand what the revolutionaries are capable of doing to the world when told about it by Ivankov. So far Luffy has not mentioned anything about how he feels toward Dragon and his ideals, but he is fine with people knowing that he is Dragon's son.

On the way to Whole Cake Island, Luffy read a newspaper where he was able to see his father's face clearly for the first time in his life. He was comically surprised to see the latter but casually remarked that Dragon doesn't look like him before admitting to being more worried about Sabo than his father after hearing about the Blackbeard Pirates' attack on the Revolutionary Army's base.

Portgas D. Ace


"Fire-Fist" Ace and Luffy were immensely close to each other. They grew up together and fought every day, with Ace always winning even though Luffy had eaten a Devil Fruit. Luffy displayed no grudge against Ace for always winning, but instead claimed that he could win now (though he appears to still acknowledge that Ace is still the stronger of the two, he proclaimed during the war in Marineford that he will eventually surpass Ace one day). Despite the battles they fought, Ace was protective of Luffy from Garp's abusive nature even going as so far to insult him to stop abusing Luffy. As for Luffy, this protective streak is reciprocated, leading to him embarking on a one-man rescue mission to extract Ace from captivity in the one place regarded as the most secure prison of the world, Impel Down, after hearing of Ace's capture and subsequent imprisonment there. However, while they are extremely loving brothers to each other, Luffy always made Ace angry and worried by doing reckless things. As such, Ace readily believed Boa Hancock when she told him that Luffy had broken into the prison. Even near his death, Ace grew angry with Luffy's reckless infiltration of Impel Down], while the endangered Luffy was worried about Ace's safety so much he had even snuck in the world's greatest prison, lost 10 years of his life, and even risked his arms to attack Magellan.

Luffy's devotion and love for his brother were shown to extremes when he not only took on every Marine stationed at Marineford, but the three Admirals themselves, showing that nothing would stand between him and saving his brother, not even three of the most powerful Marines around, and even shouting out loud he would save Ace even if it killed him. While Ace regarded Luffy as his brother and even acted like it, it was revealed moments before his execution that Ace was a child of Gol D. Roger, and that he chose his mother, Portgas D. Rouge's surname, which makes them brothers through adoption. A flashback shows Luffy and Ace first meeting as young children, which means that Luffy was aware of this fact. When this happened, Luffy already had his signature straw hat and the scar under his left eye, which means it was after Shanks gave his straw hat to Luffy and left the Foosha Village. He had also gained his Devil Fruit powers by then, which happened when he was 7 years old. It is revealed in a flashback that Luffy was sent to live with Ace and his guardian Dadan after Shanks left, since Garp thought that living in Foosha Village had somehow made Luffy "too soft". Ace was quite hostile to Luffy at first, even spitting at him before they were introduced to each other. Luffy, however, constantly tried to make Ace his friend, following him everywhere and trying to make up.

Eventually, thanks to the "Sabo Incident" Ace mentioned before he died, Ace grew fond of Luffy and they officially became brothers. Sometime after meeting Ace he managed to find out that Ace was the son of Gol D. Roger. Though many were heartbroken when Ace died, none took it harder than Luffy; Luffy was so devastated that he suffered a mental collapse and became unresponsive to his surroundings, and would have been killed by Akainu if others had not defended him. Jinbe speculated that this comatose phase was a way for Luffy to defend his mind from the impact of the loss, and worried about how Luffy would act when he woke up. Indeed, when Luffy did wake up, all he could do was scream in agony and cry and wish it was all a nightmare, and that he would wake up soon. The loss of his brother also had a crucial impact on Luffy, leading him to think that he was not worthy of becoming the Pirate King for the first time in his life. He only came out of his depression after Jinbe made him realize that Ace had entrusted Luffy's safety to his crew. After the two year timeskip, Luffy has fully gotten over his grief as he was able to talk about Ace's death freely, although his hatred for the man who killed his brother apparently still remains. Nonetheless, Luffy accepts Ace's fate, but also finds comfort in the fact that Ace truly believed he could become the Pirate King. Donquixote Doflamingo would later take possession of Ace's Mera Mera no Mi, an item which the Shichibukai was certain would draw Luffy to him, adding that Luffy would never allow anyone to gain the powers that once belonged to his beloved brother. Indeed, Luffy showed surprise when he heard of the fruit being handed out as a prize in a tournament and, not wanting it to go to just anyone, entered the tournament to win it. He was, however, fine if one of his crew members ate it, as he offered Franky the fruit. He has shown that he doesn't like it when Ace's death is made fun of as when Don Chinjao said that it was a wise move of the Marines to 'cleanse that demonic bloodline two years ago'. This angered Luffy to the point that he struck Chinjao with a Gomu Gomu no Thor Elephant Gun.

Monkey D. Garp


Though the two of them get along fine, Luffy is utterly terrified of his grandfather Garp. This is due to the extreme training he was put through in his younger years in his bid to make Luffy a marine, as well as Garp's tendency to punch Luffy to discipline him. Garp had high expectations for Luffy, but to Garp's dismay, Luffy did not share his grandfather's plans for his future. However, Garp respects Luffy as a great person, even if he is a pirate. He often brags about Luffy to his superior Sengoku, laughing whenever Luffy does something audacious and is prone to saying "That's my grandson" much to Sengoku's exasperation. When Sengoku was talking with Garp and Kuma, Garp said that Luffy is not the type of person to brag about defeating someone, arguing that Kuma did not need to kill Luffy to keep Moria's defeat a secret. When Luffy entered the Battle of Marineford, Garp recognized him and looked shocked and horrified at the sight of his grandson entering the fearsome battle. Later, as the battle rages on, Garp merely looks resigned as his grandson furiously makes his way to the execution platform. When Luffy came close to the platform, Garp stands in his way in the name of his Marine duties. However, in the end, Garp chose family over his duties as he allowed Luffy to hit him and reach the execution platform to save Ace. He also tried to attack Admiral Akainu when Ace was killed by the admiral and Luffy was on the verge of being killed as well, but was stopped by Sengoku. As Garp has resigned from the Marines, he and Luffy are no longer enemies by law.

Curly Dadan
"Dadan, I hate mountain bandits... but I like you guys!" The mountain bandit, Curly Dadan, is Luffy and Ace's foster mother. She had been blackmailed by Garp into taking care of them, and did not seem pleased with having Luffy as her surrogate son, due to being already occupied with the troublesome Ace. Luffy, in turn, did not seem to like the Dadan Family anymore than they liked him, due to his run-in with the bandit Higuma. However, as time passed, they came to care for each other, with Dadan coming in to save Luffy from Bluejam, and Luffy worrying for Dadan's safety. Luffy states that he hates bandits but he likes her.



Sabo
Sabo was never an actual member of Luffy's family, but he, Luffy, and Ace shared a drink making them official brothers and establishing the deep bond between the three. They seem to be reasonably close, though not as deep as Ace and Luffy. This is however most likely because they did not spend as much time together with Sabo being taken away and they never saw each other again for 12 whole years. He still had a tendency to defend or save him when they were children hunting together. Even though when Sabo first met him he wanted to kill him for discovering their plans. According to Luffy, when they were young, Sabo was a nicer brother to him than Ace. After Sabo and Ace fought together against Porchemy to save Luffy's life they became friends. At this point they were seen after different events of stealing and hunting. Sabo was seen being taken back by his father, who recently revealed that he was the son of a Goa Kingdom Noble. They show a relationship of trust and love since he gave up and returned with his father so that Luffy and Ace would be safe from the hired pirate Bluejam. When Sabo's apparent death was reported by Dogra, Luffy cried all night until he fell asleep, showing the genuine love he had for his elder brother. Luffy only snapped out of this sorrowful moment when Ace told him to live proudly, as Sabo wanted. In a way, Sabo is one of the earliest contributors to the molding of Luffy's personality as a free spirit. Sabo's supposed death was also one of the main motivations for Luffy to become stronger.

When Sabo and Luffy were reunited after twelve whole years, Luffy did not recognize him at first and even challenged him after hearing he won't let him have Ace's Devil Fruit power. However, upon hearing the story of the day they became brothers, he reacted in shock as he realized the latter's identity. Luffy quickly embraced Sabo and began joyfully crying for a great deal of time after finding out his remaining brother was alive and well. Sabo thanked Luffy for surviving the Battle of Marineford and asked for permission to eat the Mera Mera no Mi which Luffy unhesitatingly allowed. When Jesus Burgess attempted to kill Luffy, Sabo quickly intercepted him and Luffy was happy to see his brother and even more so after seeing that Sabo inherited Ace's power. When Sabo was preparing to leave Dressrosa, he left Luffy a Vivre Card and entrusted Luffy's safety to the Straw Hats similar to what Ace once did in the past.

During the Zou Arc, Luffy expressed worry for Sabo's safety after learning the Revolutionary Army fought against the Blackbeard Pirates only calming down when Pedro mention the possibility of Sabo being okay due to there being no mention of him being killed or captured.

Straw Hat Pirates
To find such loyal companions... your son is indeed amazing... Dragon. Because he is the Captain and recruited all the crew mates personally, Luffy cares tremendously for his crew. As far as captaincy is concerned, Luffy sees his other crew mates as equals in contrast to other pirate captains, who mostly sees theirs as subordinate underlings (his crew mostly calls him by name, rather than with an honorific or "Captain"). In fact, it could be argued that he is the only one that is generally beaten up and ordered around on the ship as several members of the crew have shown, especially Nami who never hesitates to give Luffy a beating for his idiocy (albeit, in comedic fashion). This is something of a contrast between him and his grandfather's way of commanding a group. While Garp (who is even more absent minded) responds by mercilessly beating up his subordinates for showing him disrespect and to keep them in line (even if he himself did do something foolish), Luffy lets their disrespect slide. Luffy only pulls rank when he wants to go "adventuring", despite what his crew thinks. Examples being when wanting to go to Skypiea and following the swaying needle to the New World.

Much like his idol, Shanks, Luffy is the kind of benevolent pirate captain who does not seek to actively harm others unless they give him and his crew (or anyone he cares about) a very good reason to. However, during the Jaya arc he was willing to start a fight with Blackbeard over a difference in opinion on pie. As the Straw Hat Captain, Luffy has utmost faith in his crew. In fact, after the timeskip, Luffy's trust grew even more as shown when he overheard that his crew were being apprehended by the Ryugu Kingdom's guards, he did not seem perturbed at all, and was confident that his friends could take care of themselves. This is seen once more when he accepts Law's proposal for an alliance. When his crew confronts him about it, he claims that even if Law is untrustworthy, he is not worried because of the faith he has in his crew and the training they put in during the time-skip, eliciting a shock from them before reacting positively to his praise. Luffy also has the rare ability to cheer up just about anyone with his idiotic antics, even pulling a smile every now and then from the serious Zoro and Robin.

In turn, his crew, while often frustrated at his immature and impulsive nature, trust him unconditionally. They also show great concern for him when he is put in life-threatening situations. Their loyalty was high to the point where all of them refused to hand him over to Bartholomew Kuma, even though the latter promised to spare their lives just for the captain's life. It can be said that Luffy has both greatly impacted and changed the lives of each of his crew members and is typically the one cited as having revived each of their dreams.

What a capable captain... If only a certain idiot could have heard you.

During his battle with Lucci, even though Luffy knew his crew were in danger (courtesy of Lucci flooding the tunnel) he kept fighting Lucci because they would manage and because Luffy knew that if he let Lucci get away, he would definitely kill all of his crew. This focus caused Lucci to compliment him on his leadership skills.

Though all of Luffy's crew try to look out for him (especially at the requests of Luffy's older brothers Ace and Sabo), Luffy's reckless and carefree attitude might cause a crew member to wonder why they followed such a crazy captain on numerous occasions. However, by the end of the day (or adventure), none of them truly regret following him and generally enjoy being in the crew. He likes to make fun of others' imperfections and character traits, such as Zoro's bad sense of direction (though he is barely better). Luffy also likes to comically imitate his crew members, and sometimes even himself; despite nearly dying from being frozen by Aokiji, he covered himself in flour and hopped while frozen in a pose to imitate the experience.

His level of trust and friendship with his crew is so high that he would even offer them a chance to eat the Mera Mera no Mi, which once belonged to his beloved foster brother, while the thought of it ending up in the stomach of some stranger was unbearable.

Despite the trust he has in his crew, he can get annoyed with their constant whining whenever they are put in constant danger that he starts, which has been shown during the timeskip.

Luffy has a very bizarre relationship with his signature Straw Hat. The original owner was Gol D. Roger himself as told by Silvers Rayleigh. Eventually, it was given to Shanks, who passed it down to Luffy after saving him from a giant Sea King, on the condition that he take care of it, never lose it and only return it when he became better than Shanks. The hat cements Luffy's promise to become the Pirate King and has been with him for over ten years. Subsequently, it has been repaired several times (mostly by Nami). In the beginning of the series, Luffy let people hold the hat during battle for fear of losing it, and whoever held it was considered to have his highest trust and respect. He has only entrusted it to Zoro when entering the Grand Line, Usopp during the Davy Back Fight, and to Nami during the Arlong Park, Drum Island, Jaya and Skypiea Arcs. As his fighting style got better, a string was added (most probably by Nami) so that he could keep his hat on without losing it.

The straw hat has become an identifying marker for him by his enemies, to the point where his nickname became "Straw Hat Luffy" and his crew the "Straw Hat Pirates". Luffy is almost never seen without it, even when sleeping or fighting. His love for the hat is so strong, he is willing to kill anyone who tries to damage it, and during the fourth movie he actually cried a small waterfall when it went missing.

Roronoa Zoro


The first crew mate to join the Straw Hat Pirates was Zoro, a bounty hunter who decided to serve under Luffy as a pirate after he saved his life from a dishonorable death at the hands of a corrupt Marine, but vowed if Luffy ever got in the way of his ambition, he will kill him. Later in the series, they have developed a very close bond which is underlined by their tremendous amount of trust and respect for one another, to the point where Zoro is willing to die for Luffy's dream to become Pirate King and sacrifice his own dream of becoming the world's greatest swordsman. Though, he still hints at Luffy needing to uphold his duties and capabilities as captain, such as when he jokes that if Luffy were not at least able to defeat at least half of the New Fishman Pirates, he'd have to step down as captain of the crew.

Luffy and Zoro are known to occasionally mock each other; Luffy will laugh heartily whenever Zoro gets lost or does something noticeably stupid, though he is usually worse in that respect. Zoro like the rest of the crew will reprimand Luffy for his idiotic habits. When Luffy and he battled in Whiskey Peak (as Luffy thought Zoro was attacking innocent people when they were actually bounty hunters), Zoro was exasperated with his Captain for not understanding the situation and decided to not hold back. When the battle was stopped by Nami, who explained the situation to Luffy, he laughed as he thought Zoro attacked people for giving food he did not like to which Zoro responded angrily "Who do you think I am?".

In times of trouble, Zoro has also served as an adviser to Luffy as to what course of action they should take. This is best illustrated during the events at Water 7 when Luffy was initially willing to have Usopp rejoin straight away, only for Zoro to explain what that would mean for the crew. Luffy accepted Zoro's determination as he denied Usopp's comeback when the liar wasn't admitting his stubborness. Luffy has great trust and admiration for Zoro's supreme sword skills such as when they were onboard Rocket Man and obstacles were in their way Luffy states to the Franky Family "Zoro's got this" as the Swordsmen sliced everything (including T-Bone) out of their way. Later in the New World Zoro was also the one to realize Luffy's recklessness would have to stop, going out of his way to reprimand his captain for behaving that way and making it clear they needed to take things more seriously in order to survive, with Luffy understanding it and apologizing.Luffy will sometimes mock Zoro for acting like he doesn't care about certain crewmembers like in Zou when Sanji was in a predicament and Luffy found Zoro listening outside the door he joked that Zoro was worried about Sanji, the Swordsman responded by saying "Don't make me kick your ass".

At Thriller Bark, Zoro decided to give up his life to save Luffy from Bartholomew Kuma because he was ready to die for the dream of his captain. Kuma found this trust admirable as he was moved by Zoro's compassion.

Nami
Though she respects him as a captain, Nami often scolds Luffy's airheadedness, but he never gets angry at her, even when she manipulates him. Luffy also has no problems taking orders from her when it comes to the navigation of the ship. Even though he is made of rubber, Luffy can still get hurt by Nami's physical attacks as she beats him up either by angering or annoying her. Despite the slight conflict occurring because of his recklessness, she has deep trust in him and views him as a great source of strength and comfort. When Nami fell sick just prior to the Drum Island Arc, and without a doctor on board, Luffy desperately tried to help Nami the only way he knew how. He consistently stayed by her side, and attempted to get her to smile, becoming sad when he wasn't successful, trying to keep the promise he made to Genzo. When it was determined that the only way to get her treatment was actually climbing the Drum Mountains by foot, she implicitly trusted Luffy to get her there safely. Luffy barehandedly climbed the 5000 meter tall mountain to get her to a doctor, with enhanced pain caused by the reaction of rubber to cold.

Even though Nami betrayed him when she stole their ship and treasure during the chaos at Baratie, Luffy never changed his opinion of her, insisting that she become the navigator in his crew. Oddly, he seems to place the most trust in her out of all of his crewmates - after learning from Johnny that he witnessed Nami killing Usopp, he refused to believe him, even going so far as to threaten him with a beating for "lying". In a similar situation in Whiskey Peak, where he was told that Zoro had killed and hurt the people who fed him, Luffy outright attacked him, even though that information came from an unreliable source (unlike the case with Nami). While he is normally oblivious, Luffy is still occasionally wary of angering Nami. When he heard Absalom was going to marry her Luffy simply said "He wants to marry Nami? He's brave".

Even without knowing anything about the horrible past she suffered, seeing her cry was enough for Luffy to place his hat on her head to console her as he went berserk on Arlong and his crew, similarly to how Gol D. Roger acted. Nami is the only person that Luffy places his straw hat on as source of comfort to her.

Usopp


Luffy's relationship with Usopp is perhaps the closest example on the ship of a sibling relationship because of their similar pasts and fun loving mindsets. Despite his fears, Usopp at times finds the strength within himself by following the example set by Luffy and the rest of the crew. When he exclaimed that he was good with cannons, Luffy immediately made him the gunner of the ship. Usopp and Luffy are also destined to cross paths with the Red Hair Pirates in the future in some manner; Luffy to reunite with Shanks, and Usopp with his father. Luffy and Usopp are notorious for being the "idiots of the crew" and will set bad example for the youngest Chopper. During the Davy Back Arc he showed a strong trust in Usopp by allowing him to care for his Straw Hat while Luffy sported the afro, something he'd only allowed Nami to do before.

Their relationship faced a great turmoil when Luffy was forced to fight Usopp during the tragic events Of Water 7 over the fate of the broken Going Merry, and Luffy is emotionally distraught. Luffy engages in brutal combat with his best friend and took a surprising amount of damage from the Sniper's tricks before finally ending the battle with a Gomu Gomu No Bullet. Though Usopp lost the fight, Luffy gives him what he wanted (the Going Merry) and he and Usopp cried deeply over their briefly broken friendship. Luffy remained depressed along with Chopper and Nami about the event, but after the events of Enies Lobby tearfully and joyfully accepted him back when he later apologized and begged to rejoin the crew. He was willing to do this without an apology however, due to how much he missed him.

Usopp felt deep sorrow for Luffy when he lost his brother, and dedicated his timeskip training to getting stronger for him. He now has a lot more confidence in his ability, and so does Luffy. He stops Trafalgar Law from attempting to apprehend Caesar Clown after the events of Punk Hazard, reminding him that the sniper said he could handle it. He displays this again during Dressrosa, when he doesn't question in the slightest that Usopp can get the job done when he learns of his role in the Tontatta's plans. He was also happy to hear Cavendish praising Usopp for saving him from the life as a toy slave.

Vinsmoke Sanji
He adores Sanji's cooking, especially meat, dropping anything he's doing for a meal despite Sanji's claim that he puts considerably less effort into Luffy's food than the meals he prepares for the women. Sanji will cook any animal that Luffy catches, but is also usually the one who has to "discipline" Luffy whenever food is stolen (usually by kicking his captain around whenever food is pinched). Despite this, Sanji put his life on the line for Luffy's sake when Bartholomew Kuma had them weakened. Sanji has rescued Luffy from drowning more than any other crew member and trusts Luffy to defeat the enemies Sanji himself has trouble against. Before Sanji became part of Luffy's crew, he stated that Luffy's dream was foolish, but acknowledges that his own dream is foolish as well.

Though Sanji finds Luffy stupid at times, there is an underlying and often unspoken understanding that Sanji has great loyalty and respect for Luffy, his ideals and his dreams. In addition to being willing to trade his life for Luffy's, he declared to Capone Bege his belief that Luffy would become Pirate King, and that he would never do anything that would endanger Luffy's dream. Upon meeting Charlotte Pudding (Sanji's betrothed), Luffy (along with Nami, Chopper and Brook) learned that Sanji had turned down Pudding in order to be able to return to the Straw Hats. Luffy and the others were all greatly shocked to hear that Sanji would turn down a woman - especially such a beautiful and (seemingly) kind one - in order to continue adventuring with them, which moves Luffy so much that he starts crying. Sanji has also demonstrated his respect for Luffy's position as the crew's captain. He backed Zoro in telling Luffy that Usopp had to apologize for disrespecting Luffy's decisions before being allowed back on the crew. Additionally, after a duel between them, Sanji tells Luffy that, by insulting and attacking his captain, he had forfeited his right to return to his captain's ship.

Luffy reciprocates Sanji's loyalty and respect by tasking Sanji to be the temporary captain of the Thousand Sunny while Luffy fought in Dressrosa; this task included not only protecting the ship and crew, but also battling a Yonko's crew and reaching Zou. This outstanding trust continued when Luffy landed in Zou to find Sanji absent, with Luffy (along with Zoro) trusting that the cook would "look after himself" despite Nami's protests. Luffy later attacked Charlotte Cracker for insulting Sanji's loyalty, by suggesting that Sanji looked down on the crew due to their inferior social status, and that he would choose a comfortable married life over returning to the crew. Even after Sanji instigated a duel between them, Luffy refused to back down, defend, or retaliate; afterwards, Luffy declared that he knew Sanji's insults about the crew were all lies. Completely unlike his fight with Usopp, Luffy refused to hurt his cook and stated that he would not move or eat anything other than Sanji's cooking, until Sanji's returned. He also claimed that he couldn't become the Pirate King without Sanji, causing Sanji to break down in tears.

As with Nami, Robin and partly Usopp, Luffy was quick to respond when it seemed that Sanji was on the verge of leaving the crew. While Luffy was initially happy to accept Sanji's intended bride as part of the crew, as long as Sanji himself returned, he quickly learned from Pekoms that the arranged marriage would entail Sanji joining the Big Mom Pirates. In response, Luffy yelled at the lion Mink, saying that he would never allow that to happen, and proceeded to lead the Sanji retrieval team into Big Mom's territory, risking conflict with both a Yonko and an infamous Underworld army in order to get Sanji back. After getting captured and learning of Big Mom's true plan to assassinate Sanji, Luffy became enraged and tried to rip his own arms off in order to escape and warn Sanji. After being freed by Jinbe, Luffy's first thought was rescuing Sanji, despite his injuries and hunger, and he rushed through Big Mom's palace searching for him. After Reiju informed him that Sanji became aware of Pudding's plan, a relieved Luffy decided to return to the spot where he promised to wait for Sanji.

Just as he did with Nami and Chopper at Punk Hazard, Luffy understood when a decision was important to Sanji, and decided to support that decision. When Sanji stated that he could not leave Whole Cake Island with Luffy after learning of Big Mom's plot to assassinate his family, Luffy responded simply that was who Sanji was, and that he and the Straw Hats would help Sanji wreck Big Mom's plans.

Tony Tony Chopper
Chopper, as the youngest of the crew, often joins him and Usopp in singing and fooling around, and he credits Luffy for helping him find the courage to go on adventures. Luffy accepted Chopper as a person and didn't treat him like a monster as so many others did and corrected Chopper when he said he didn't have any friends by shouting "You're wrong reindeer, I'm your friend!" this caused a great impact on Chopper causing him to love Luffy like a big brother. Chopper also often tends to jump after Luffy whenever his captain starts drowning, despite also being unable to swim due to having eaten a Devil Fruit as well. Luffy has deep faith in Chopper's medical skills, as when he explained that the "candy" that the giant children were eating was in fact a dangerous drug, he broke a promise with one of them to bring some more "candy".

Chopper devoted himself to "becoming a real monster" during the timeskip, no longer afraid to be feared as long as he can be of help to Luffy.

Nico Robin
Luffy and Nico Robin first began as enemies, but after Robin saves his life in Alabasta, Luffy grows to trust her more deeply which he shows by allowing Robin to join his crew without any reluctance. Robin is especially grateful to him for taking her in despite the risks it involved, as well as for pursuing her all the way to Enies Lobby and directly opposing the World Government. At Water 7, Luffy reveals that he is very impressed by Robin's intelligence when he is talking about her with the mayor Iceburg. As such, Luffy always turns to Robin for explanation whenever they encounter an unfamiliar person, place, or thing. At first she joined the crew because Luffy had saved her life when she wished to die, and had nowhere else to go, but eventually all of the crew members became important to her personally. Out of all the crew members, Robin is the most tolerant of Luffy's silly behavior, and actually finds him amusing. Robin is also one of the few members of the crew who unquestioningly follows Luffy into any dangerous adventure he wants to embark on.

Franky


Luffy initially did not like Franky, with the latter's robbery of Usopp, despite Luffy and Usopp not being on the best of terms themselves. This led to his distrust of Franky for a long while, before he eventually came around to the shipwright during the Enies Lobby Arc and Franky's eventually joining the Straw Hat Pirates. He is always amazed by Franky's building talent, and is often in awe of Franky's cyborg enhancements and modifications, a running gag among many males throughout the show. He also deeply respects him as a man after he was willing to show his genitals to everyone without shame and begging Robin not to rip them off, so he would still be a man when he joins the crew. After the timeskip, with Franky looking and acting even more robotic, he has only become even more amazed. Especially with Franky's mecha Franky Shogun which Luffy holds in dumbfounded awe.

Upon hearing Ace's Mera Mera no Mi has resurfaced and was a grand prize in the Corrida Colosseum, Luffy offered Franky to eat it, showing a great deal of trust and friendship, though Franky refused due to not wanting to lose his ability to swim.

Brook
Luffy came to almost immediately befriend Brook up their meeting, even despite the rest of the Straw Hats distrusting and outright refusing Brook, whether due to the initial mysteries behind his form or simply his personality. Luffy's admiration and eventual trust for Brook was cemented in his offering Brook a place in his crew, Luffy's self-considered family.

As the musician of the crew, Brook is often requested by Luffy to perform a song. When requested to play by Momonosuke, he states that he will only respond to orders by his captain, before finally giving in and playing a song. Brook will often join Luffy, Usopp, and Chopper in immature antics, despite Brook being the oldest member of the crew at 90 years of age. Luffy had always stated that he wanted a musician in the crew, so Brook's job is very important to him. Brook often appears to enjoy Luffy's child-like antics and sometimes would even reinforce his humorous behaviour. Luffy is the only member of the crew to find Brook's skull jokes funny. This relationship is strengthened by the fact that Brook was part of the Rumbar Pirates, the crew that were such good friends with Laboon, and promised to meet up again.

Straw Hat Grand Fleet
The Straw Hat Grand Fleet was formed at the end of Dressrosa Arc, comprised of seven groups, the Beautiful Pirates, the Barto Club, the Happo Navy, the XXX Gym Martial Arts Alliance, the Tonta Corps, the reborn Giant Warrior Pirates, and the Yonta Maria Grand Fleet. Luffy initially turned down their offer for the formation of the fleet, as he finds such things as bothersome. After Luffy conveys to them that his ideal of Pirate King is not to be important but to be free, the leaders were touched by this and decided to exercise their own free wills. They vowed themselves to be his underlings, without the Straw Hat captain having to be obligated to respond in turn. Though a bit annoyed at this, Luffy still accepts them to be his friends, promising to help them out if they are in a pinch.

Cavendish
The captain of the Beautiful Pirates, Cavendish, harbors a deep-seated resentment of the Supernovas, which used to include Luffy, for stealing the spotlight from him. At first, Cavendish was friendly and sociable to him since Luffy was under the guise of "Lucy". However, right after learning his true identity, Cavendish immediately turned hostile and became hell bent on killing Luffy with his own hands. This hostile nature changed when Usopp helped in his transformation back to human from a toy, even to the point where he tells Luffy that he'll take down Doflamingo to pay the debt. Luffy seems to have grown to trust Cavendish as while facing Doflamingo, he stated he needed him to defend his friends though Cavendish agreed he misinterpreted this as Luffy being his "fan". Later on, Cavendish along with the other captains swore to serve under Luffy as they departed Dressrosa. Luffy often refers to Cavendish as "Cabbage".

Bartolomeo
Two years ago, in Loguetown, Bartolomeo witnessed Luffy survive execution at the hands of Buggy. From that moment forward, he followed all of the Straw Hats' adventures, growing more and more delighted at the crew's escapades. Bartolomeo feels great admiration for Luffy and his crew, referring to them as "Senpai". He formed the Barto Club, with all of the crew members share his admiration. It is shown he will do anything to the point of cutting off a man's tongue for badmouthing Luffy and it's revealed Bartolomeo's reason for wanting the Mera Mera no Mi was to give it to Luffy as memento of his late brother Ace. He was also willing to fight Sabo (not knowing he was Luffy's brother) for saying he wouldn't allow Luffy to have the Devil Fruit. Unlike the other fighters who pursued the bounties of Doflamingo's enemies during the "Birdcage", Bartolomeo did not betray the Straw Hats and continued to offer them aid throughout the conflict, even willing to sacrifice his own life for them. After the conflict on Dressrosa was finished, Bartolomeo along with the other captains swore to serve under the Straw Hats.

Bartolomeo and his crew even gave the Straw Hats a ride to Zou before parting ways. Luffy personally thanked Bartolomeo for his help, marking the first time he call the latter by his name, something that caused the latter to tear up.

Sai
Sai is the thirteenth leader of the Happo Navy. Luffy first encountered him when he was accused of getting in a fight with Spartan at the Corrida Colosseum. Sai, who witnessed the act stood up for Luffy by declaring it was Spartan who started the fight and he should be the one to be disqualified. When Luffy thanked Sai the latter reacted belligerent and angry and even had to be restrained by his brother. Sai did not seem to hold a grudge toward Luffy for winning the Block C and even tried to get his attention for his grandfather to thank him for restoring his head. During the "Birdcage", Sai and his family allied themselves with Luffy to defeat Doflamingo rather than go after the bounty on his head. After the conflict on Dressrosa was finished, Sai and the other captains swore to serve under the Straw Hats. Though he is grateful, he was one of those who got annoyed when Luffy first turned down the alliance and thought to incapacitate the 'commander' and force him to accept them.

Ideo
Ideo first met Luffy as 'Lucy', his opponent in the Corrida Colosseum. However, after losing and being turned into a toy, and then promptly saved from that life, he ended up allying himself with the Straw Hats. Though Luffy has had little interaction with Ideo, the Longarm boxer is still grateful to have been saved and swore himself to be Luffy's underling as the representative of the XXX Gym Martial Arts Alliance. Despite this, he was one of those who got annoyed when Luffy first turned down the alliance and thought to incapacitate the 'commander' and force the Straw Hat to accept them.

Leo
Not much conversation is seen between the two of them, but due to being friends with Usopp, he quickly trusted Leo and the Tontattas. Leo was completely indebted to Luffy and the Straw Hats for ending Doflamingo's reign over Dressrosa. As a result, Leo asked permission from Gancho, the king of Tontatta Kingdom, to travel with him and become a representative for the Straw Hats. Even though Luffy declined the offer, Leo chose to pledge allegiance anyway. After celebrating a feast with the Straw Hats and their allies, Leo returned to Dressrosa with his fellow Tontattas and asked the people to build a statue of Luffy and Usopp in their honor, showing much admiration for them.

Hajrudin
Though Luffy defeated Hajrudin during the Block C battle for hurting the Fighting Bull, the giant was willing to overlook this incident during the "Birdcage" game as he wished to repay his debts to Usopp for saving him from his toy transformation. After the conflict on Dressrosa was finished, Hajrudin was one of few captains who swore to serve under the Straw Hats, despite the low number of crewmates of his reviving Giant Warrior Pirates.

Orlumbus
The leader of the Yonta Maria Grand Fleet. During the events of the "Birdcage" game, Orlumbus allied with Luffy and the rest of their allies in order to end Doflamingo's reign over Dressrosa. After Doflamingo was defeated, Orlumbus decided to pledge his allegiance to the Straw Hats, along with the rest of their allies. When Luffy declined the offer, he decided to pledge anyways and help him out whenever he needed it.

Bentham


Luffy became good friends with Bentham after he apologized for causing them trouble in Alabasta, and distracted the Marines so the Straw Hats could escape. Bon Kurei went as far as to give his life away to save Luffy and other Impel Down prisoners by posing as Magellan and ordering the opening of the Gates of Justice during the Impel Down Arc. While he was later determined to be alive, Luffy is unaware of his friend's condition.

Emporio Ivankov
It's not some sort of special power, but he has the ability to make allies of everyone he meets. And that is the most fearsome ability on the high seas...

Luffy has on numerous occasions been aided or befriended by members of the Revolutionary Army due to being Dragon's son. In Impel Down, he befriended Emporio Ivankov and Inazuma. Before directly encountering him, however, Ivankov and all of his Okama followers were already aware of Luffy's status as not only a pirate but Impel Down's first-ever intruder through the surveillance systems within the Great Gaol, and he unintentionally achieved a celebrity status within NewKama Land as a result. Ivankov helped save Luffy's life with his healing hormones because he was moved by Luffy's selflessness, as Luffy begged that Bentham be saved even while being on the verge of death himself. Once they learned of his connection with Dragon, Ivankov determined himself to ally himself with Luffy, and protect the young pirate's life as best he could. Ivankov and Inazuma both aided Luffy in the breakout of Impel Down and assisted him in rescuing Ace at the Battle of Marineford. Upon the war's end, they snuck aboard the Marine ship that Boa Hancock took over. Ivankov then left Luffy in Jinbe's hands and then left with his Newkama followers to return to Momoiro Island as well as saying that he would like to meet Luffy again.

During the Dressrosa Arc, when Jean Ango mentioned his intention of capturing all the escaped Impel Down prisoners, Luffy wondered how Ivankov was doing.

Kozuki Family
Luffy met the Kozuki Family when he and the crew were on Punk Hazard after receiving a distress signal. After rescuing Kin'emon and Momonosuke, guardian and master posing as father and son, from the island and Caesar Clown, Luffy allowed them to travel with him and his crew to search for their other comrades. After the battle with Doflamingo ended in victory and the rescue Kanjuro, they continued to travel to Zou. Once on Zou and learning about Momonosuke's true heritage, he doesn't care in the slightest. After meeting Raizo, he wanted to see him do tricks and became amazed when he did them. After learning about what Kaido has done to their country, Luffy was willing to form an alliance with them in order to defeat Kaido, along with the Mink Tribe and the Heart Pirates. Luffy and Momonosuke seem to get into small fights like two brothers. This seems to parallel how Luffy and Ace used to fight and argue when they were kids.

Mink Tribe
The minks are grateful to Luffy and the the Straw Hats, not only because Sanji's group saved them after being devastated by Jack's attack on Zou, but also because Luffy's victory over Doflamingo and the latter's following arrest was what caused Jack to abandon his campaign and leave the island. After seeing how the Mink Tribe risked their lives and protected the samurais from Jack, he became amazed. Luffy then formed an alliance with them in order to defeat Kaido, along with the Kozuki Family and the Heart Pirates.

Civilians
Luffy befriends most of the civilians he meets on his journey, who normally fear him for being a pirate but hold him in admiration by the time he moves on to the next adventure. He can be naive at times and is quick to befriend people, often calling people whom he has known less than a day his friends and being willing to go as far as necessary for them. During his journey, Luffy saved or freed civilians from the tyrannical clutches of villainous antagonists on several occasions. Luffy befriended many civilians from Shells Town, Orange Town, Syrup Village, Cocoyasi Village, Drum Island, Alabasta, Skypiea, Water 7, Fishman Island, and Dressrosa.

Laboon
After entering the Grand Line, Laboon was the first thing the Straw Hat Pirates saw. Launching the cannon in the hopes that it would slow them down, Luffy, instead, hit Laboon. After saving him from Mr. 9 and Miss Wednesday who were trying to use Laboon for food, Crocus] explained to Luffy why Laboon would slam his head into the Red Line. Luffy, in an effort to give Laboon a renewed sense of hope, picked a fight with the whale by jamming the Going Merry's mast into the whale's head. After the battle (which Luffy called a draw), Luffy promised Laboon that he would return to see him, under the guise of wanting a rematch, moving Laboon to tears of joy. As a sign of the promise of the future rematch, Luffy paints the Straw Hat Jolly Roger on Laboon's head, commenting that the insignia would be washed away if Laboon hit Reverse Mountain further. This prevents him from slamming against the mountain anymore. The Straw Hats then depart in good spirits for Grand Line.

Skypieans
Defeating Enel, the self proclaimed "God" of Skypiea and freeing its people, as well as granting the Shandia back their homeland, ringing the golden bell, and saving Angel Island, Luffy and the rest of the Straw Hat Pirates have become heroes to the people. They even offered the broken column to their saviors. With peace restored to the land many hope that the Straw Hats will visit again. Many were also disappointed that they never got to say goodbye and rang the golden bell instead. Aisa seems to hero worship Luffy as a role model, and Gan Fall also compares Luffy to the Pirate King Gol D. Roger.

Kuja Tribe
Luffy also has a very friendly relationship with the entire population of Amazon Lily despite their initial hostility towards him. But after Luffy gained Boa Hancock's friendship and love, it seems every single Kuja practically worships him, as they had never seen a man before. They even went as far as selling "touches, pokes and stretching" of Luffy and his rubbery skin for 20 gold pieces each and most of them affectionately refer to him as "Luffy-sama".

Fishman Island
Some time after their arrival, the Straw Hat Pirates became criminals of Fishman Island except for a few friends due to suspicion of kidnapping mermaids, Madam Shyarly's prophecy of Luffy destroying Fishman Island, and then Luffy's crew taking over Ryugu Palace when the Neptune army attacked them. However, things changed after Hody Jones launched his coup d'état and was on the verge of executing Neptune. Rather than watching their King die, the civilians were willing to see Shyarly's prediction come true. During the ordeal, the Straw Hats were able to gain the civilians' trust after Luffy thwarted Neptune's execution per Shirahoshi's pleas and when the crew was seen fighting alongside Jinbe. After saving Fishman Island from the New Fishman Pirates, Vander Decken IX, and Noah, Luffy and his crew were cleared of the kidnapping charges when the mermaids were found and the Straw Hats were hailed as heroes for their efforts in saving the island from destruction. However, when Luffy was suffering from critical blood loss, the civilians did not do anything to help him due to their laws, but they rejoiced when Jinbe volunteered to be the blood donor. After a huge party in the Straw Hats' favor, Luffy discovered that while Fishman Island was protected by the Big Mom Pirates, she would not hesitate to destroy Fishman Island if she did not receive her monthly 10 tons of candy. Luffy then took responsibility for the missing candy to protect Fishman Island again. When negotiations of treasure instead of candy failed, Luffy declared that he would defeat her in the New World and claim Fishman Island as his territory.

Gatz
Because Luffy (while as Lucy) was gaining such attention in the Corrida Colosseum with his amazing feats, the commentator Gatz became a huge fan of Luffy rooting for him to win the competition. During the fight against Doflamingo, Gatz came to Luffy's side when his Gear Forth wore off and protected him from Doflamingo's rampage long enough with various gladiators to give Luffy enough time to regain his Haki. Furthermore, he has a lot of faith in Luffy to the point he made a broadcast to the whole island that Luffy would defeat Doflamingo with one punch and save the kingdom. After Doflamingo's defeat Gatz tearfully proclaims Luffy to be the victor of both the fight and the savior of Dressrosa. When he learns that Luffy supposedly kidnapped Rebecca, he was left in shock but still remained a fan of his. But it was clear that he was aware that Kyros is Rebecca's father and was happy that Luffy brought her back to him. Even after finding out his real name, Gatz, along with the citizens of Dressrosa, still calls him by his gladiator name "Lucy".

Red Hair Pirates
Twelve years ago, Luffy became friends with the Red Hair Pirates. This extends to two years ago when Benn Beckman stopped Kizaru from attacking Luffy. Lucky Roo seemed fond enough to want to see Luffy again after rescuing him at Marineford to the point he asked Shanks if he wanted to see him after 10 years. After the timeskip, Shanks and the rest of his crew appear to be pleased with Luffy's most recent bounty.

Alvida
Alvida was the first enemy Luffy encountered on his journey. Luffy freed her cabin boy, Coby, and became the first man to ever hit her. The two met again in Loguetown, after Alvida underwent a drastic change in appearance and surprised Luffy as she voiced admiration and has "fallen" for him because of his actions.

Kuro
Luffy had a dislike towards Kuro for planning to destroy Syrup Village. In return, Kuro did not consider him or his crew as a threat, seeing them as mere children instead of genuine pirates. Even after Kuro saw his own crew defeated, he believed that it was only due to their own weakness until Luffy revealed his Devil Fruit powers. Kuro’s beliefs for the life of a pirate angered Luffy, who had a completely different opinion about this matter. Luffy even stated that Kuro did not have what it takes to be a pirate and became utterly furious when Kuro attacked his own crew without showing any remorse. Kuro's contrasting believes and underestimation of Luffy's capabilities are what led to his ultimate downfall.

Krieg
Luffy and Krieg became enemies when the latter showed his desire to take over the Baratie as well as his ambition to become the Pirate King. Krieg was blinded by his arrogance and Luffy's seemingly harmless looks. After witnessing his Devil Fruit powers, Krieg came to believe that Luffy will just be another pirate in the Grand Line, as the place is filled with Devil Fruit users like him. In return, Luffy became infuriated when Krieg attacked Sanji, despite the latter offering food to him and his crew, and ordered Gin to throw away his gas mask and breathe the deadly MH5 poison gas after refusing to kill Sanji. During the fight, Krieg knew about Devil Fruit users' weakness towards sea water and tried to take full advantage of Luffy's weakness of the ocean. Even after being defeated, Krieg unconsciously got up and demanded to continue the battle only to be knocked out by Gin.

Arlong
Luffy developed a strong hatred towards the fishman for his cruel treatment towards Nami and her village. In return, Arlong considered Luffy a weakling, given the former's ideal view on humans being inferior to fishmen. During their battle, Arlong believed that Luffy did not have what it takes to beat him. Luffy agreed that he does not have the talents like his other crew members, but was confident he would beat him. As the fight went on, Arlong went into a berserk state and recklessly attacked him. Luffy's rage towards the fishman reached its peak when they were in Nami's room in Arlong Park after learning that this was the place where Arlong forced Nami to draw maps for his crew. Luffy resorted to destroying the room and the maps, which deeply enraged Arlong further. After breaking Arlong's nose, Luffy declared his intention to destroy the room and Arlong Park, but Arlong retorted that Arlong Park would not fall to a mere human. This proved to be his downfall as Luffy's attack not only destroyed the building but also defeated Arlong, ending his tyrannical rule.

Bellamy
Luffy met Bellamy back on Jaya and, after the latter mocked Luffy for chasing his dreams and believing in things like One Piece and Sky Island, Luffy chose not to fight back and let Bellamy and his crew beat on him, mirroring what Shanks did with Higuma. However, after Bellamy assaulted Cricket and stole his treasures, Luffy returned to fight him. As Bellamy continued to ridicule him on his dreams, Luffy returned the favor from earlier and brutally pounded Bellamy in the ground with one punch.

Two years later, Luffy was shocked to see him again and surprised that Bellamy no longer holds any ill towards him and will not laugh at him. During his fight in Block B Luffy even cheered for him and they later had a friendly talk. Bellamy was even reluctant to assassinate Luffy per Doflamingo's orders. During the "Birdcage" game, Luffy declared Bellamy a friend after seeing him so horribly beaten by Doflamingo after all the admiration the latter had for him. After Doflamingo released Bellamy from his control, Bellamy refused to betray his own principles and asked Luffy to fight him one last time. Though Luffy tried to talk him out of it, he reluctantly punched Bellamy in the ground in a similar manner at Jaya. With his last thoughts, Bellamy thanked Luffy for calling him a friend. After Doflamingo was defeated, Bellamy parted ways with the Straw Hats and while stating he will not be Luffy's subordinate like those who join the Straw Hat Grand Fleet, he would keep a piece of the Vivre Card just in case he got into trouble.

Foxy
When Foxy first met the Straw Hats, he appeared to look down on them for their naivety and ignorance, despite their crew holding bounties far above his own. His overconfidence from being undefeated in Davy Back Fights led to him underestimating Luffy and believing his cheating ways would be enough to secure victories, even against a 100,000,000 bounty. After losing the Davy Back Fight to Luffy, Foxy vowed to get the Straw Hats back for his loss.

Silvers Rayleigh


Ever since Rayleigh had heard about Luffy from Shanks he had wanted to meet him face to face. When Luffy found him on the Sabaody Archipelago, he was really excited about hearing stories about Gol D. Roger. The more they talked, the more amused Rayleigh felt as he compared Luffy's demeanor to his old captain. He, like Shanks, has very great expectations for him. After the war had ended, he swam across the Calm Belt to reach Amazon Lily where Luffy had been recuperating from his injuries and from losing Ace. From there, he helped Luffy break into Marine Headquarters again with Jinbe in order for him to send the secret message to his crew. Rayleigh also mentored Luffy on how to master all three different forms of Haki that he possessed. After the 2 year timeskip, it is apparent that both of them became close from their training together as before heading to his ship, Luffy yelled towards Rayleigh with a big smile "I'm gonna do it, I'M GOING TO BE PIRATE KING!", with Rayleigh donning a smile with tears in his eyes. Rayleigh himself later proudly proclaimed Luffy as his pupil to the Marines and kept them busy to prevent them from interfering in Luffy's departure. While Luffy set sail Rayleigh seemed to be comparing his late captain Roger and Luffy, claiming that destiny is slowly but surely taking shape and that Luffy has become a man well fit to wear the Straw Hat, which originally belonged to Roger. He also said that it might be worth living a little longer. Luffy strongly respected Rayleigh as a mentor. During his time training on Rusukaina, Luffy was willing to even endure hunger as punishment, as he refused food from the wild animals, an act which contradicts his gluttony.

Whitebeard Pirates
He gained the assistance and admiration of all of the Whitebeard Pirates and their allies in his quest to save Ace. They followed Whitebeard's orders to back up Luffy after witnessing him unleash his Haki. After the death of Ace, the whole Whitebeard Pirates crew protected Luffy, as if he were Ace, claiming that he is all that is left of Ace's spirit. After the timeskip, Luffy expressed shocked at hearing they fought and lost to Blackbeard as he was eager to see them again and thank them for protecting him from Akainu.

Hody Jones
After the Straw Hats arrived at Fishman Island, they became enemies of Hody Jones and the New Fishman Pirates for crushing Arlong's ambitions. During their confrontation, Luffy has gained a deep hatred towards Hody for his treatment towards his subordinates and the people of Fishman Island and for trying to destroy everyone. To that end, Luffy defeated him and stopped his takeover. Even after his defeat, Hody demanded a rematch with Luffy despite corroding his body beyond repair.

Vander Decken IX
Luffy antagonized the captain of the Flying Pirates, Vander Decken IX, for standing between him and the object of his desires, Princess Shirahoshi. After Shirahoshi rejected Decken, Luffy confronted Decken and thwarted his attempt to kill her.

Brownbeard
Initially enemies due to Luffy and his crew opposing his "master", Brownbeard did not trust them and resented them for capturing him. However, Luffy seemed to respect Brownbeard's admiration for Caesar. When Luffy discovered that Caesar betrayed Brownbeard, his hatred for the scientist grew and he resolved to save Brownbeard from being killed by his own followers under Caesar's command. When the conflict was resolved, Luffy thought it was a shame when Brownbeard decided to turn himself in, even calling the former pirate his friend.

Chinjao
Because Monkey D. Garp crushed his pointy head and robbed him of the means to acquire a certain treasure, Chinjao developed a hatred not only against Garp but also those in his bloodline. At the Corrida Colosseum, Chinjao originally tried to take his grudge out on Luffy. Ironically, when Luffy defeated him, he inadvertently returned what Garp took away by restoring his pointy head, gaining his gratitude. Afterwards, Chinjao's grudge against Luffy and his family was lifted and he later joined forces with Luffy to defeat the Donquixote Pirates.

Big Mom Pirates
Luffy has already invoked the hostility of the Big Mom Pirates during his argument with Pekoms and Tamago regarding the candy tribute on Fishman Island. Later, he became a major enemy of Big Mom's family and crew after he arrived at Whole Cake Island and they served as obstacles to Luffy's efforts in rescuing Sanji.

After the assassination attempt on Big Mom failed, the Big Mom Pirates aimed to seek retribution against the Straw Hats and their allies. After they escaped the chateau thanks to the Tamatebako causing the chateau to collapse, the Big Mom Pirates immediately organized to pursue their enemies, including Luffy and his group. When they learned that the explosion that toppled the Whole Cake Chateau came from the Tamatebako that Luffy had given to Pekoms and Tamago, the Big Mom Pirates went to great lengths to ensure that Luffy and his crew do not escape Totto Land.

Charlotte Pudding
When the Sanji Retrieval Team first encountered Charlotte Pudding, she appeared willing to help free Sanji from his "arranged wedding". However, when she visited Luffy and Nami in their prison cell, she then reveals her sinister nature as Pudding whispered her plan to kill Sanji during their wedding day and that he and the others are not meant to leave Whole Cake Island alive either. She left them while silently mocking their predicament which shocked and angered Luffy.

After Luffy and his team escaped from the Whole Cake Chateau, Pudding, who was motivated by her new feelings for Sanji, decided to assist them when her crazed mother was pursuing them for wedding cake. When she approached the team, Luffy was angry to see her again but was confused by her erratic personality disorder as her outward expressions rapidly switches between wanting to help them and wanting them dead. However, Pudding did aid the team by helping them reach the coast where their ship was located.

While baking the cake for Big Mom, Pudding expressed her concern for Luffy's safety due to his fight with Katakuri.

Charlotte Cracker
At the Seducing Woods, Charlotte Cracker engaged Luffy in a battle, intent on stopping him from reuniting with Sanji. Cracker infuriated Luffy by saying that Sanji would shun him if they meet again, which caused Luffy to violently attack him.

After a long arduous battle, Luffy manage to counter and defeat Cracker and sent him flying through the Seducing Woods all the way to Sweet City where he was found by his family.

As a result, the Charlotte Family and Big Mom Pirates formed an army to avenge Cracker's defeat, ultimately wearing the exhausted Luffy down with attrition and capturing him.

Charlotte Brûlée
Brûlée was another major hindrance to Luffy and his team after they arrived at Whole Cake Island. At the Seducing Woods, she separated Luffy from his group and led him on a wild goose chase.

After Brûlée was captured by the Sanji Retrieval Team, Luffy made use of her powers. Before the Tea Party, Luffy forced her to make several copies of him to distract Big Mom and cause chaos at the wedding venue.

While retreating from his fight with Katakuri, Luffy used her again to escape to the real world and back into the Mirro-World when being pursued by Big Mom.

Charlotte Katakuri
During the Tea Party, Katakuri was a huge hindrance to Luffy's efforts to facilitate Bege's assassination plan.

Katakuri does not underestimate the crew, as he swore to eliminate Luffy before he can become a threat to his mother, and later insisted on staying on their ship to ambush them just in case they escaped his mother.

After Luffy dragged him into the Mirro-World to keep him from preventing his friends' escape, the two clashed against each other ferociously. When Luffy briefly gained the upper hand, Katakuri was impressed and commented that he understood how he overcame Cracker. Upon noticing Luffy's improving skill in Kenbunshoku Haki, Katakuri tried to finish the battle quickly.

Despite his desire to end Luffy, Katakuri wanted to defeat him honorably as he was furious when he caught his sister Flampe meddling in his battle. Katakuri even injured himself to make the fight more fair. After knocking out Flampe, Katakuri acknowledged Luffy as an equal.

Pekoms
Unlike with the rest of the Big Mom Pirates, Luffy's relationship with Pekoms in particular is much more positive, with Luffy showing concern for Pekoms well being after Jack's second attack on Zou. Pekoms, in return, guided the Sanji Retrieval Team to Totto Land and covered for them from being detected on first arrival. Luffy was also angered when he learned that Capone Bege abducted and attempted to kill Pekoms. Luffy called Pekoms a friend and wanted to punch Bege for shooting the latter when they were negotiating.

Trafalgar D. Water Law


Luffy seems to have developed a positive relationship with Trafalgar Law and his crew, as they braved the Battle of Marineford and the attacks of the Marine admirals just to save him. Although seeing that they are both Supernovas, and therefore rivals, there may be some ulterior motive behind Law's decision to save Luffy. While on the other hand, Law has been shown to respect Luffy, and could quite simply have come to save him because of that respect. When Luffy met Law on Punk Hazard, Luffy was happy to see him again, not knowing Law's intentions. Luffy stated, with a happy smile on his face, that he and Law will be enemies if he's going after the One Piece too, but he is grateful nonetheless. Luffy was visibly surprised when Robin revealed that Law became one of the Shichibukai during the timeskip. When Law helped save Nami, he proposed an alliance to Luffy to take down one of the Yonko. To the surprise of his crewmates, he accepted after being told that they would be taking down Kaido; saying he intended to take them all down. He appears to trust Law to go along with this plan of action. When Law was shot by Doflamingo, Luffy showed a lot of concern for his ally. After that, when the North Blue pirate was kidnapped by the Shichibukai, Luffy stated his desire to rescue him. Due to Law being his life saviour, Luffy has great gratitude towards Law, considering Law to be his friend. Since the two have formed an alliance, Luffy has developed a running gag of making decisions on behalf of the alliance without considering Law's opinion, usually to the latter's annoyance. He decided to send Caesar Clown flying away in Punk Hazard when the agreed upon plan was capturing him, defeating Doflamingo outright when the plan was leaving him for Kaido, and most recently, joining forces with the Mink Tribe and Kozuki Family to take the Yonko. They even have a comical argument about this in Dressrosa, as Law decides to terminate the alliance in light of their plan being compromised. Luffy says Law is his friend and that he can't decide these kinds of things for the both of them, and Law retorts that is precisely what Luffy is doing. Luffy was shocked and later utterly outraged when he thought Law was killed by Doflamingo.

During Law's desperate struggle against Doflamingo, it was shown that Law thinks highly of Luffy and his crew, saying that they are capable of performing miracles. Law later stated that if Luffy was to be defeated by Doflamingo, he would allow himself to be killed as well, since they are in an alliance together. He also said that the fight between Luffy and Doflamingo is his fault, but Robin corrected him, saying that Luffy would not enter a battle with no personal reason.

It also seems like Luffy cannot pronounce "Trafalgar" properly and calls him "Tora-man" (トラ男) instead, a portmanteau of the "Tra" in "Trafalgar" and the Japanese kanji for "male". It is often localized as "Tra-guy" in some subs or as "Traffy" in Pirate Warriors 3.

Eustass Kid
Luffy's personality has left an imprint on Eustass Kid, being left with respect for him after he claimed that he would be the one to find One Piece. They departed on good terms and agreed to meet up again in the New World. After the Battle of Marineford, Kid stated that he is not generous enough to let Luffy run around as he pleases.

Jewelry Bonney
Though Bonney and Luffy have yet to actually meet face-to-face, Luffy's actions during the Celestial Dragon incident have unintentionally garnered him Bonney's fury, a fury that even extended to the rest of the Straw Hats. Upon hearing of Luffy's attack on a Celestial Dragon, Bonney was angered and swore to crush the Straw Hats in the New World. However, after the timeskip, when learning of Doflamingo's defeat, Bonney was happy for Luffy's victory and stated that she was proud to be in the same generation with Luffy.

Capone Bege
After Luffy punched a World Noble, Capone Bege was angered at him for causing trouble at Sabaody Archipelago. He later antagonized Luffy's crew by capturing his cook, Sanji, and forcing him to attend the wedding with Big Mom's 35th daughter, Charlotte Pudding. Later when Jinbe talked about Bege's past, Luffy was appalled by his cruelty, and was further angered towards him after learning that he abducted and attempted to kill Pekoms. However, Luffy agreed to meet with his fellow Supernova to discuss terms for a possible alliance in order to take down Big Mom. At the negotiations, the two had a heated argument with Luffy wanting to attack Bege for hurting Pekoms but they were forced to put aside their differences after Jinbe pointed out that they share a common enemy in Big Mom. After listening to the assassination plot, Luffy agreed to being the bait in Bege's plan due to finding it interesting.

During the Tea Party, Bege was amused by Luffy's chaotic actions which left Big Mom in a fury but was shocked that he would announce his presence to her. Despite their multiple grievances with one another, and even in light of their assassination plan failing, the two still treat each other as allies. Bege refused to turn on Luffy despite receiving orders to do so and later provides safe place for the Straw Hats inside of his Big Father form. Luffy in turn showed great concern for Bege as he endured Big Mom's onslaught, choosing to help back him up against Big Mom and defying orders not to engage the enemy.

After successfully escaping the Whole Cake Chateau, Luffy and Bege parted on good terms.

Nefeltari Vivi
Luffy is good friends with Nefeltari Vivi, who was with them all throughout the Alabasta Arc, and he even considers her an honorary Straw Hat crew member. Whenever she sees Luffy doing something that might compromise the crew's safety, even when he means to help, she reminds him of a leader's responsibilities, and she holds Luffy in great respect for helping save Alabasta. She was not shocked that Luffy took Nico Robin into his crew despite her being Vivi's enemy in the past (showing trust in his judgment), and she did not show any prejudice about Luffy being the son of the world's worst criminal.

Wapol
Wapol first met the Straw Hats on their way to Drum Island and antagonized them by eating a bit of their ship. When Luffy met Wapol again on Drum Island, Luffy sent Wapol flying, keeping him out of Drum Island for good.

Enel
On Skypiea, Luffy and his crew made enemies out of Enel and his priests for breaking their laws. During the survival game, Luffy was angered at Enel for hurting his friends and swore to defeat him. Being made of rubber, Luffy proved to be completely immune to Enel's electrical powers, which made him a natural enemy. Eventually, Luffy defeated him and put an end to his evil plans for good.

Fukaboshi
Fukaboshi did not show resentment towards to Luffy or his crew when they arrived (even though it was illegally). In fact, he only wanted to find him in order to deliver a message from Jinbe. When Luffy was accused of kidnapping mermaids and prophesied to destroy Fishman Island by Madam Shyarly, he began to raise doubts of both accusations. Finally, when he discovered that Hody Jones hated humans simply because he was raised to, he begged Luffy to "set everything to zero." Luffy obliged on his request, saying that they are friends of course.

Shirahoshi
Luffy formed a friendly relationship with Princess Shirahoshi after saving her from an axe thrown by Vander Decken IX and after she learned that he saved her beloved pet shark, Megalo. Once Luffy learned that Shirahoshi had been locked in Hard-Shell Tower for ten years to keep her safe from Decken, he stated that it must have been really boring for her. Luffy then offers to take a walk with her outside the castle with him serving as her bodyguard so she could see the world outside her tower while protecting her from Vander Decken IX. Even though Luffy and Shirahoshi do get along, Luffy gets annoyed at her tendency to cry. After seeing how fragile Shirahoshi's personality is, Luffy bluntly called her a crybaby and a weakling. This seems to parallel how Ace and Luffy's relationship were as children. Shirahoshi, however, does not show any resentment towards Luffy for calling her names. After seeing how Shirahoshi was able to honor her mother's final wish for so many years, Luffy acknowledges that she is not as weak as he originally thought. He then calls her "Weakhoshi" since he still considers her a crybaby. After the island was saved and Luffy was about to leave, he promised to take her to the surface to see a real forest the next time they met. Due to the promise, she refused to attend the Reverie with her family, showing a strong devotion and friendship with Luffy. Luffy is unaware of Shirahoshi's true identity of Poseidon.

Rebecca
Luffy has been on good terms with Rebecca after she shared the story of Kyros with him when he took an interest in his statue. Rebecca was thankful for Luffy defeating Spartan and was impressed with his performance during the Block C battle royale. Even though she tried to kill Luffy to better her chances of getting the Mera Mera no Mi in order to protect the one she cares about, Luffy did not hold a grudge against her and was still thankful for her buying him food. Afterwards, Rebecca opened up to him. In turn, Luffy considers her a nice person and was angry at the audience for throwing horrific insults at her due to her lineage. When Doflamingo unleashed the "Birdcage" to conceal Dressrosa, she became a target to his game, which caused Luffy to worry about her. Luffy promised Rebecca that he would repay her by defeating Doflamingo and when she asked Luffy if he can defeat Doflamingo, he proclaims he can since he's going to become King of the Pirates. After defeating Doflamingo, she cried in tears when Luffy won and was by his side when he became unconscious after the battle. Even after finding out his real name, Rebecca still calls him by his gladiator name "Lucy". Luffy cares for Rebecca and understood her feelings, he was not happy with Kyros's decision to stay away from her, so Luffy ran to the palace in spite of being chased by the Marines asking her if she is ok with her father's decision. After Rebecca replied she is not, Luffy took her close to where Kyros is. This seems to parallel how Luffy felt when he was a boy where he and Ace were forced to stay away from Sabo and couldn't bring him back due to their social class. As Rebecca sees Luffy and the others leaving, Rebecca hopes that one day she'll see him again.

Vinsmoke Reiju
Luffy first met Vinsmoke Reiju, Sanji's elder sister, when the Sanji Retrieval Team encountered Germa 66 just after entering Big Mom's territory. During that first meeting, Reiju noticed immediately that Luffy was slowly dying from the effects of consuming the Armored Stonefish's poisonous skin. Unlike her younger brother Yonji, Reiju chose to save Luffy's life, sucking the poison out of his body as her thanks for everything the Straw Hats had done for Sanji. They later met again inside Whole Cake Chateau, after Reiju helped hide Luffy from Big Mom's guards. She informed Luffy that Sanji already knew of Pudding's plan to kill him during the Tea Party\wedding ceremony, leading a relieved Luffy to thank Reiju before (much to her shock) jumping out a window.

During their brief encounters, Reiju has been shown silently admiring Luffy's loyalty to her younger brother. After she saved his life, Luffy thanked Reiju but immediately demanded that she return Sanji, causing her to smile. She also smiled after seeing Luffy and Nami on Whole Cake Island, having successfully made it that far in order to rescue Sanji, and was visibly saddened after witnessing Sanji being forced to attack Luffy in order to keep Luffy from following them. She also offered Luffy food after hearing his stomach grumbling, and smiled when he turned her offer down because of his promise to only ever eat Sanji's food again.

In a private conversation between herself and Sanji, Reiju described the Straw Hats as his wonderful friends. Against the plans of their family, she urged Sanji to flee Whole Cake Island with them, warning him that he would never again meet such friends in his life. Sanji refused to leave her to die, however, and after he reunited with Luffy, he told Luffy of his desire to save the rest of his family. Luffy agreed to help, citing in part the fact that Reiju had previously saved his life.

Thanks to Luffy's efforts in showing Big Mom Carmel's shattered portrait and causing her to scream, Sanji was able to free Reiju and the other Vinsmokes after the Big Mom Pirates who immobilized and surrounded helding them at gunpoint. When Big Mom attempted to kill Reiju, Luffy and Sanji quickly came to her aid by blocking Big Mom's attack.

Underworld
When Luffy fought Caesar Clown, the scientist warned him that he was protected by many powerful people in the blackmarket Underworld and defeating him would incite their fury. This did not bother Luffy as he had already been fighting people like that since coming to the Grand Line and took the mad scientist down. All the brokers watching reacted with shock and anger, with one saying the underworld could not stay quiet about this. Upon defeating Doflamingo, the most influential man in the underworld, many buyers became angry with Luffy over the deals he cost them, one even stabbing his wanted poster. A large group of these dealers even formed an alliance to kill Luffy and get revenge, only to be stopped by Issho.

Caesar Clown
Luffy and his crew become Caesar Clown's enemies after they stumbled on Punk Hazard. To ensure that word of his felonies does not become public, he ordered his underlings to eliminate the Straw Hat Pirates. Once the crew learns of the sinister experiments that Caesar has been conducting, they aim to capture him. Luffy did originally think of him as a nice person from what Brownbeard stated, however, after hearing from Momonosuke about his cruel treatment towards his men and how he does not care about what happened to the children, Luffy became enraged and more determined to defeat him. Caesar warned him that if he defeats him, Doflamingo and one of the Yonko will come after him by touching him, though Luffy retorts with an angry punch stating he has been taking on guys like that since he entered the Grand Line.

On Zou, Luffy completely forgot about Caesar and was only reminded of his actions when it was said that Jack used one of Caesar's gas weapons to poison the Mink Tribe. At Whole Cake Island, he spotted Caesar among Bege's crew and was angry to see his face again as the latter tried to deny his identity. However, after it was pointed out that it was really him, the two got into an argument with Caesar blaming Luffy for all the pain and suffering he has been put through. They nearly came to blows only to stop when Jinbe pointed out that they share a common enemy in Big Mom and were forced to briefly put aside their differences.

After escaping the Whole Cake Chateau, Caesar immediately left Luffy's group behind after he was given his heart back, happy to finally get away from them.

World Government
Naturally as a pirate, Luffy is an enemy of the World Government, though he wasn't important to them at first, they started taking him seriously after he surpassed every pirate in the East Blue, and even more after defeating Crocodile at Alabasta, declaring war on them by burning their flag and defeating Rob Lucci of the CP9 at Enies Lobby, defeating Gekko Moriah at Thriller Bark, striking a World Noble and surviving after that in Sabaody Archipelago, and now they see him as a potential threat to the whole world when he is revealed to be the son of the Revolutionary Dragon, and that he survived the Battle of Marineford.

Gorosei
Despite never encountering each other, Luffy has made enemies out of the Gorosei, as they consider Luffy both a troublemaker and a potential threat to the government after his victory over Crocodile and later on punching a World Noble. Because of Luffy's actions, the Gorosei view Luffy as a potential threat to the balance of the Three Great Powers, especially after learning of his relationship to Dragon. After Doflamingo's defeat, the Gorosei are shocked and angry that Luffy was behind yet another incident, causing the Gorosei to call him a "Brat".

World Nobles
Luffy has also made enemies of the World Nobles after punching Saint Charloss for shooting his friend, Hatchan. Luffy even stated that he hates the World Nobles while Hancock explained her past as a slave. During the Battle of Marineford, Kizaru stated that the nobles have been clamouring for his arrest. Luffy's detestment to the World Nobles was added to his despisement for Doflamingo after the latter revealed he used to be one.

Magellan
Luffy also made a very dangerous enemy out of Magellan during his break-in at Impel Down. The fact that Luffy was the first to break into Impel Down was enough to infuriate Magellan. The chief warden severely poisoned Luffy during their first battle causing Luffy to lose ten years of his lifespan in a painful healing process. After realizing that Luffy survived his poison and had released more prisoners, Magellan did everything in his power to ensure that Luffy did not leave Impel Down alive. Even though Luffy did not manage to defeat Magellan in battle, he did successfully tarnish his reputation by escaping his grasp.

Cipher Pol
Luffy and his crew are major enemies of Cipher Pol for declaring war on the World Government and for the latter's trying to kill Robin. Luffy originally thought the then agents of CP9 that he met at Water 7 were good people, but once he saw them trying to frame Luffy and his crew for killing Iceburg, destroying Galley-La Headquarters, and forcing Robin to accompany them, Luffy became enraged by their actions and became enemies with them.

Blueno
Luffy viewed the agent Blueno an annoyance for standing in his way from getting to where Robin was, but thanked him for a good fight and helping him uncover his Gear Second.

Spandam
Spandam originally viewed Luffy as a weak pirate, but after his assault on CP9 and his crew winning and saving Robin, Spandam has developed a grudge against them.

Rob Lucci
Luffy's biggest enemy of CP9 is Rob Lucci. With Lucci, Luffy holds a deep hatred for trying to kill him and his crew and all of Galley-La despite knowing them for years. Lucci even personally attempted to make sure Luffy's crew would not survive Enies Lobby by flooding the underground passage from where they all in hopes of Luffy losing everything for his own enjoyment. Lucci continuously mocked Luffy, stating he's too weak to defeat Enies Lobby and save Robin. However, Lucci is one of the strongest opponents Luffy has ever faced and forced the Straw Hats captain to push himself beyond his limits to defeat him. Regardless, Luffy stated he is glad to have met them, due to him having become stronger from fighting them.

Marines
Even the Marines started to take him more seriously after he defeated the villainous Marine Captain "Axe-Hand" Morgan and several known pirates such as Buggy the Clown, "Pirate Admiral" Don Krieg, and Arlong the fishman. A 30,000,000 bounty was placed on his head after he had beaten Arlong and the Marines were cautious about Arlong's defeat because it had brought to question the worth of their units. This reward eventually becomes 100,000,000 after he defeated Crocodile, when the World Government deemed him a serious threat for defeating one of the Shichibukai. After the invasion of Enies Lobby, where they declare war on the World Government itself, the government raised the bounties of the entire crew; Luffy's was raised to 300,000,000, to 400,000,000 after the Battle of Marineford and to 500,000,000 after defeating Doflamingo. During his voyage, Luffy has had a few meetings with the Marines, from the not too serious looking return of Ironfist Fullbody (whom Luffy met first by the Baratie) and Captain Smoker on Loguetown, to Admiral Aokiji. While some are easy to defeat, Luffy has been unable to defeat Smoker or Aokiji due to their powerful Logia abilities, and has resorted to running away from Smoker when he encounters him (until he mastered Haki).

Coby
Coby, the first person Luffy met on his journey, acknowledges that as he is a Marine, they will inevitably have to fight. However, they consider each other friends, as Luffy helped Coby muster the courage necessary to become a Marine. Coby holds great respect for Luffy, and he promises to always be a friend, though his dream - becoming a Marine - is opposite to that of Luffy's. Later on, having met on Water 7, Luffy inspired Coby to pursue his dream of becoming a Marine Admiral. Despite having clashed during the war, it appears not to have damaged their friendship, as Coby still admires Luffy's strength.

Smoker


Luffy has a great rivalry with Smoker since the two met in Loguetown. After Smoker watching Luffy show no fear when Buggy attempted to kill him, he recognized Luffy as a potential threat and was determined to capture him at any price only for Dragon (Luffy's father) to stop him.

Even though they are enemies, Luffy admitted that he likes him and sees him as a good guy. In Alabasta, Luffy asked Zoro to save Smoker from drowning, showing some compassion for the Marine.

During the war at Marineford, Smoker initiated another confrontation with him and easily overwhelmed Luffy until Hancock intervened. When they met again in Punk Hazard, Luffy was happy to see Smoker alive, and stated that he was worried about him after the battle at Marineford. Both Luffy and Smoker were forced to put aside their rivalry to join forces and face Caesar Clown and Vergo. After rescuing the children that were held captive by Caesar, Smoker once again allowed the Straw Hats and their allies to go free.

Sakazuki


While Sakazuki was an Admiral, he caused the most damage to Luffy during the war at Marineford, sending him into a mental breakdown by successfully killing his brother, Ace. Akainu then proceeded to hunt him throughout the entire battlefield, swearing to end his life no matter what, despite Blackbeard attempting to bring down Marineford. True to his word, Akainu focused all his efforts on ending Luffy's life, which reached the point of dangerous obsession, as it took the combined efforts of Jinbe, Crocodile, and the Whitebeard Pirates just to protect Luffy from Akainu's relentless pursuit. Akainu ultimately failed to kill Luffy after the intervention of Coby and the arrival of Shanks. Nonetheless, after striking through Jinbe, Akainu managed to leave Luffy with an x-shaped scar on his chest, which seems to remind him of the ruthless Marine officer, evidenced when Luffy touched the scar in anger upon learning of Akainu's promotion to Fleet Admiral.

For killing his brother, Ace, in the war at Marineford, Luffy holds hatred for Fleet Admiral Sakazuki. To this day, Akainu is the only enemy in the series who succeeded in completely breaking Luffy's spirit.

Kuzan
Luffy first met Admiral Aokiji at Long Ring Long Land. Luffy was hostile as he tried to attack Aokiji on the belief that the Admiral would try to take Robin away. Later on, Luffy warmed up to him after the Admiral helped Tonjit. However, he was a little shocked to learn that Aokiji knew his grandfather. Luffy's hostility towards the Admiral returned when Aokiji changed his mind about not taking Robin into custody, and he engaged Aokiji in a one-on-one fight which ended with Aokiji emerging as the victor. Aokiji spared Luffy due to owing the latter for defeating Crocodile, but also because he was indebted to his grandfather. Due to bearing witness to Aokiji's power, Luffy decided to act less naive against future conflicts.

The two met again at the battle at Marines, where Aokiji attacked Luffy, stating that while he was indebted to Luffy's grandfather, the latter had chosen his path of death. Before Aokiji could finish off Luffy, Marco got in the way, allowing Luffy to advance. Aokiji was very shocked to see Luffy unconsciously release a burst of Haoshoku Haki, nearly sweating at the sight. Near the end of the war, Kuzan tried to prevent Luffy from escaping when he froze the sea before Jinbe (who was carrying Luffy) could reach it and when he attempted to freeze Law's submarine when the Heart Pirates were taking Luffy away.

Two years later, Luffy was very shocked to hear from Jinbe that Kuzan was no longer a Marine and that he fought and lost against Akainu for the position of Fleet Admiral.

Borsalino
Due to Luffy assaulting a Celestial Dragon, Admiral Kizaru was sent to Sabaody Archipelago to arrest him. However, he escaped from Sabaody due to Kuma's interference. During the battle at Marineford, Kizaru was a major hindrance to Luffy's attempts to rescue Ace. He kept Luffy from his goal multiple times and even destroyed the original key to Ace's handcuffs. Kizaru also mocked Luffy for lacking in power to save Ace. Despite that, Kizaru was very surprised to see Luffy unconsciously release a burst of Haoshoku Haki and joined his fellow admirals in trying to eliminate Luffy.

Sengoku
Before resigning from the Marines, Sengoku was angry with Luffy's actions such as defeating Shichibukai Crocodile, invading Enies Lobby and defeating Rob Lucci of the CP9, and defeating Gekko Moriah. After hearing that Luffy punched the World Noble, Saint Charloss, he was enraged, wondering what was wrong with Garp's family.

His frustration reached its breaking point after hearing that Luffy had made it into and out of Impel Down and was intruding on the war against Whitebeard in an attempt to rescue Ace. During the war, Sengoku revealed to the world that Luffy was just as dangerous as Ace, because he is the son of Revolutionary Dragon. He was very shocked to see Luffy unconsciously use Haoshoku Haki but attempted to execute both him and Ace when Luffy managed to reach Ace with a key to his chains.

Issho
Luffy first encountered Admiral Fujitora at a casino in Dressrosa and he helped the man by informing him that he was being scammed by members of the Donquixote Pirates. He was amazed to see Issho effortlessly defeat the thugs and when asking for his identity, the latter told him it was best if he did not know for both of their sakes. Later on, when Doflamingo was fighting Law at Corrida Colosseum, Luffy was surprised to learn that Issho was a Marine admiral while the latter sadly stated he was repaying Luffy's good deed with violence due to having to capture Law.

When Luffy was preparing to leave Dressrosa, Issho planned to arrest Luffy and his allies. Luffy challenged the Admiral to a fight, proclaiming that he will not run from anyone regardless if they are an Admiral or Yonko before striking him. Though Luffy challenged the Admiral to a fight, he announced his attacks, making the man see that Luffy was pitying him due to his blindness which he took as an insult, revealing that he blinded himself and does not need Luffy's pity. Their fight was left at a stalemate when Luffy was forced to retreat by his allies. While Luffy was retreating, he was "pursued" by the citizens of Dressrosa and Issho overheard some of them speaking happily of Luffy. This made him relent as he saw there were people touched by the actions of a pirate and made him regret blinding himself as he wanted to see Luffy's face so he could see the pirate who obtained such praise. He later used the rubble he gathered to attack the group of pirates who were angry at Luffy for beating Doflamingo, which was done as thanks for Luffy defeating the former Shichibukai.

Buggy


Though antagonistic towards one another earlier in the East Blue, Luffy's relationship with Buggy is overall similar to that of Buggy's relationship with Shanks: a friendly yet slightly antagonistic way. Though Buggy was a formidable opponent for Luffy when they met, now Buggy is nothing more than an annoyance to the Straw Hats captain, having barely noticed Buggy when he met him again in Impel Down. Buggy on his part tends to attempt to take advantage of Luffy's naivety for his own personal gain (though whenever Luffy responds with his usual kindness results in Buggy being very guilty). After learning who Luffy's father was, Buggy was deeply shocked realizing further why Luffy is such a troublemaker. Unwillingly, Buggy played a major role in saving Luffy's life as after Crocodile helped Luffy and Jinbe get away from Akainu, the two were caught by Buggy, who later dropped them off at Law's submarine.

Dracule Mihawk
Despite his fearsome reputation, Luffy let Zoro face the Shichibukai and, after seeing Dracule Mihawk nearly kill Zoro, Luffy was flung into rage but later was pleased seeing Mihawk let him live to surpass him. When Mihawk asked Luffy his dream, the latter stated it was to be Pirate King a goal which Mihawk stated would be harder than surpassing him something Luffy shrugged off. It appears Mihawk likes to keep tabs on Luffy and his crew due to the vast potential they possess. During the Battle of Marineford, Mihawk was amused at Luffy's entrance in the battle and unfazed after finding out who the latter's father was. He also purposely fought Luffy to test him if he's worthy of the next age, and even though he maintained the upper-hand, he complimented Luffy by stating he wasn't as reckless as he thought. In Mihawk's opinion, he views Luffy as a potential threat for the future due to his unique ability to make allies out of everyone he meets, even former enemies.

Bartholomew Kuma
Bartholomew Kuma similarly came to the rescue of the Straw Hats on numerous occasions. In their first meeting, Kuma allowed Luffy's crew to escape from Thriller Bark, despite being ordered to kill them. This was likely due to his conviction as an officer of the Revolutionary Army. While it is not known what his intentions were in engaging the crew in battle, and forcing Zoro through an incredible test of endurance, it is likely that he meant to test their dedication to Dragon's son, and expose them to the terrifying power of forces in the seas ahead. In their second meeting, Kuma directly interfered with an assault by the Marines to save the crew with his teleportation powers. Finally, as his last act of free will, he had Dr. Vegapunk program him to protect the Thousand Sunny until its crew returned. The incredible lengths Kuma took to aid them has made him a savior of the crew. When also considering the army's care for Robin during the two years of separate training, it is likely that the Revolutionaries will prove to be powerful and dedicated allies in the future, despite Dragon's choice to have almost no direct contact with his son. However, Franky stated that while they owe a great debt to him, the next time they meet he will have become nothing more than a mindless killing machine for the government.

Boa Hancock


Luffy managed to befriend the Gorgon Sisters, despite their previous attempts to kill him for seeing the mark on Shichibukai Boa Hancock's back, which the other two sisters also have. The mark was of the World Nobles, proof that they were once enslaved to them, and they would have rather died than show the mark to anyone. During a fight with Hancock's sisters, when Boa Sandersonia's mark was about to be revealed, Luffy served in preventing everyone present from viewing it as a form of respect to his opponents, claiming that their secrets have nothing to do with their fight. This sparked up past memories in Hancock, and she then revoked her decision to eliminate him. Upon further testing his selflessness, she reveals their past to him, and Luffy forgives them, showing that he only hates the Celestial Dragon who did all of them wrong, earning their friendship and Hancock's love. He has come to greatly appreciate Hancock in return, as she helped him in the two major instances of helping him break into Impel Down and giving him the key to Ace's Seastone handcuffs. However, while Luffy does not have the same romantic feelings towards Hancock that she feels towards him, he has shown that he genuinely cares for and appreciates her. During his fight with Magellan, when the warden stated that he would have Luffy tell him how he managed to break into Impel Down, Luffy protected Hancock by declaring he would not tell Magellan even if it killed him. After the two-year timeskip, Hancock mentioned that she's a thoughtful woman suitable to be a great wife for loading the ship with Luffy's favorite foods. Luffy replied that he was grateful to her for bringing food for him, but he wasn't going to marry her. Regardless, Luffy replied that he wishes to see her again sometime in the future.

Crocodile
After seeing Crocodile and his Operation Utopia plan to destroy Vivi's kingdom, Luffy grew furious at the Shichibukai, swearing to defeat him. However, Crocodile viewed Luffy as just another rookie who knows nothing of the world. During their third fight, Crocodile stated once Luffy learns what the seas are truly like, he would forsake his dream. In the Impel Down Arc, Luffy was enraged to see Crocodile and refused to accept his help and only allowed the latter to join when Emporio Ivankov promised to keep an eye on him. When they arrived at Marineford, Luffy knew Crocodile would try to attack Whitebeard and prevented the latter from doing so, much to Crocodile's chagrin. Though Crocodile claimed to align himself with no one during the Battle of Marineford, he saved Luffy's brother, Ace, and later Luffy from the then Admiral Sakazuki. However, Crocodile's reason for protecting Luffy was to prevent the Marines from having their way.

Gekko Moriah
Luffy is a major enemy of Gekko Moriah for trying to take his and his crew's and others shadows. That feeling is mutual, and they also seem to see each other as rivals, as they both aim to become the Pirate King. Like Crocodile, Moria viewed Luffy as an inexperienced rookie stating the he's nowhere near ready for the New World and would only lose everything due to his overconfidence. True enough, Luffy and his crew were utterly powerless against Kuma and were scattered across the world and trained for the next 2 years to grow ready for the New World. At the Battle of Marineford, Moriah was very displeased to see Luffy again and attempted to steal his shadow once more only to be repelled by Jinbe. Moriah was also the only Shichibukai to be shocked upon hearing that Revolutionary Dragon was Luffy's father.

Jinbe


While initially assisting Luffy only to protect and rescue Ace, the ex-Shichibukai Jinbe grew so fond of Luffy that he proclaimed while fighting Akainu at Marineford that he would gladly lay down his life to protect Luffy. After escaping the ordeal, he stayed with Luffy on Amazon Lily while he was recovering. It was Jinbe who also brought Luffy out of his self-pity and doubt. The fishman made Luffy realize that even though Ace had died, he still had his own pirate crew. As Jinbe departed from the Kuja ship, he and Luffy expressed the desire to see each other again in two years. Luffy told Keimi of this desire, only to be disappointed when he finds out that Jinbe had to leave Fishman Island. However, before he left, Jinbe did leave a message for Luffy with Prince Fukaboshi.

When they met after two years, Jinbe was happy to see him again but surprised he had not received his message. As he himself stated, he has the deepest gratitude for Luffy and his crew for stopping Arlong. He also wanted to apologize to them for Arlong, since he was the one who let Arlong go to the East Blue. Despite the mutual respect between them, after Luffy announced his desire to fight against Hody Jones to save his crew, he informed Jinbe that if he wanted to stop him, he would have to fight him. They eventually reached a compromise and formed a united front to combat Hody Jones and his crew. After the battle of Fishman Island, in which Luffy lost a large amount of blood, Jinbe offered his blood for the transfusion. Upon recovering, Luffy asked Jinbe to join his crew. While happy to have been asked, Jinbe declined the offer, stating he has other business to take care of first, but said when all that was done and they meet again, if Luffy and his crew still wanted him to join later, he promised he would join than. Luffy and all the crew members show they want him to join.

During the Whole Cake Island Arc, while Luffy and Nami were being held prisoner by Charlotte Opera, Jinbe came to their rescue by attacking the captor as Luffy was very excited to see his friend who stated his intention of freeing them. It is shown that Luffy trusts Jinbe's opinion, as he fully agreed to meet with Capone Bege (even after hearing the horrible actions Bege did in the past). Jinbe also broke up an argument between Luffy, Bege, and Caesar Clown by pointing out that they share a common enemy in Big Mom.

In the midst of the chaos at Big Mom's Tea Party, Luffy was delighted when Jinbe confronted Big Mom and officially declared his intention to leave the Big Mom Pirates in order to join the Straw Hats.

Donquixote Doflamingo
Doflamingo originally thought little of Luffy, however, he did advise Caesar Clown, Vergo, and Monet to be vigilant of him and his potential. Furthermore, after discovering Doflamingo used Ace's Devil Fruit, the Mera Mera no Mi, to lure Luffy to the Corrida Colosseum, Luffy refused to let anyone else claim it. He later became furious with Doflamingo for trying to kill Law and his cruel treatment towards the people of Dressrosa and promised Rebecca he would defeat him. His anger became both shock and fury after hearing Doflamingo reveal his past as a World Noble and stared angrily as the latter bragged how he murdered his father without remorse. His rage increased after being forced to defeat his former enemy Bellamy due to the latter's admiration of Doflamingo despite how he treated him. This fury further increased upon seeing Law unconscious and missing an arm thanks to his battle with Doflamingo. Luffy often refers to Doflamingo as "Mingo".

Robin stated that the Pirate Alliance between the Straw Hat Pirates and the Heart Pirates would not be the sole reason he was fighting Doflamingo. This idea was supported when Doflamingo stated Luffy was in the way of his plans causing Luffy to retort he was in the way as he wasn't defeated with that Luffy activated his Gear Fourth, saying that Doflamingo's evil deeds are the reason of his fight with the Shichibukai. Once entering Gear Fourth, Luffy turned the tables on Doflamingo as he overwhelmed the latter before his Haki wore off. Luffy was forced to hide as Doflamingo angrily searched the island determined to make the Straw Hat Captain pay for his actions.

When Luffy regained his Haki and confronted Doflamingo once more, it is here where Luffy reached a breaking point as upon hearing Doflamingo stating that if everyone on Dressrossa had stayed manipulated, no one would have to die. While admonishing Doflamingo, Luffy swore to beat the Shichibukai and leave Dressrosa before using King Kong Gun against the latter and putting all his strength in the attack. Luffy defeated Doflamingo, thus putting an end to his tyrannical reign.

Shanks
He has connections with Red-Haired Shanks?



Luffy shares a strong relationship with Shanks, the pirate who saved his life twelve years ago in his hometown, and looks up to him as his role model of an ideal pirate. Shanks and his crew are the ones Luffy proclaimed he would beat as they were leaving Luffy's hometown. Luffy will often defend Shanks when others insult him and was relieved to hear from his grandfather that Shanks and his crew were okay. Part of Luffy's dream is to return the hat Shanks intrusted him with when a swore to becomes a great pirate. Shanks, while frequently making fun of him as a child, has remained informed of Luffy's activities and is proud that he has become a pirate. Luffy has since worked diligently on keeping that promise and is infamously known as "Straw Hat Luffy". While discussing taking down the Yonko with Trafalgar Law, Luffy indicated a desire to defeat Shanks as well; echoing his promise to one day form a crew strong enough to defeat the Red Haired Pirates, though he wants to save him for last.

Edward Newgate
During the war at Marineford, even Whitebeard himself came to respect and admire Luffy, so much so that he referred to Luffy as "Straw Hat Luffy" whilst he referred to others as "Brat". After seeing the lengths to which Luffy would go to save Ace, Whitebeard even remarked that he would not forgive Marco if he let Luffy die. Soon after, he assigned his crew and allies to back up Luffy after witnessing him unleash his Haki.

Marshall D. Teach


When Luffy first met Marshall D. Teach in the Wild Cherry on Jaya Island, they were rivals over some petty things like favorite foods. After Luffy got mocked by Bellamy for being a dreamer, Blackbeard gave the Straw Hat captain a friendly speech telling him not to give up on his dreams, despite his later attempt to capture Luffy as a means to attain the Shichibukai position left by Crocodile. However, during the mass breakout attempt in Impel Down, when Luffy learned that the man he met on Jaya was Blackbeard, the one responsible for Ace's capture and impending execution, Luffy flew into a rage and attacked him. The two almost got into a fight only for Jinbe to intervene and remind Luffy of his desire to save Ace. Luffy calmed down as Blackbeard admitted he underestimated Luffy's strength. Though this encounter led to them becoming enemies, Blackbeard continued to encourage Luffy to pursue his dreams.

Two years later, during the Dressrosa Arc, Luffy spoke with Blackbeard and greeted him in a hostile manner as Blackbeard jovially greeted him and stated Jesus Burgess would win the Mera Mera no Mi before Luffy swore that would not happen. During the Zou Arc, Luffy was told how the Blackbeard Pirates defeated the Whitebeard Pirates remnants, and usurped the vacant Yonko position, which further infuriated Luffy. Later, Luffy was even more angered to learn that Blackbeard and his crew had attacked the Revolutionary Army's base at Baltigo, which put his father and Sabo in danger.

Charlotte Linlin
Luffy initially thought of Big Mom as a good person for protecting Fishman Island in place of Edward Newgate. However, this soon changed when Luffy realized that she is willing to destroy a country for candy. When Fishman Island is under the threat of facing Big Mom's wrath for the lack of candy, Luffy talked with the Yonko and took the blame on himself by saying he ate all ten tons of candy. Linlin refused Luffy's offer of treasure in place of the candy and decided to target Luffy in place of Fishman Island. Luffy declared that he would defeat her in the New World and would make Fishman Island his territory as she reacted in anger. In the Zou Arc, Luffy's hostility towards Big Mom grew when he learned that Sanji would be forced to marry one of Big Mom's daughters and join her crew.

After Luffy invaded Totto Land and defeated Charlotte Cracker, Big Mom's rage towards Luffy swelled as she unleashed a ferocious storm and sent an army to battle him. When Luffy and Nami were captured and imprisoned, Big Mom contacted them through a Den Den Mushi and told Luffy that she was willing to let him and his crewmates leave safely due to her promise to Sanji, but threatened them to show them "hell" if they ruined Sanji and Pudding's wedding ceremony. Ignoring the Yonko's threats, Luffy continues to challenge her.

After Sanji informed Luffy that he could not leave Totto Land and allow Big Mom to murder his family, Luffy declared that he and the rest of the Sanji Retrieval Team would help Sanji wreck one of Big Mom's most significant plans.

At the Tea Party, the two met face to face when Luffy caused a ruckus while several copies of him ruined the wedding cake that Big Mom was looking forward to. Luffy soon made his presence known when she went to search for him and she was about to attack but Charlotte Katakuri intervened, much to her annoyance until he revealed Luffy's true intention which surprised her.

Luffy later showed Big Mom the destroyed portrait she treasured so much and after many ordeals, he succeeded in his task of making her scream, which gave Bege time to perform his assassination attempt. However, the assassination failed and the Big Mom Pirates surrounded Luffy and his allies, forcing them to retreat into Bege's fortress. When Big Mom regained her senses, she immediately attacked Bege's fortress and angrily demanded that Luffy and his allies come out and face her.



Luffy later intercepted Big Mom as she tried to attack Vinsmoke Reiju. Luffy tried to continue the confrontation but Sanji stopped him and told him to run as Big Mom taunted his previous promises to defeat her. Enraged, Luffy entered Gear Fourth and briefly clashed with her, declaring to Big Mom that he would defeat her after taking down Kaido.

Kaido
Since Luffy agreed to collaborate with Law in defeating Kaido and decimating his forces, that would make Luffy an enemy of Kaido as well. Even though Law stated that the chances of success are slim, Luffy isn't afraid to oppose Kaido and even declared that he will defeat all of the Yonko. After hearing about how his subordinate Jack devastated the Mink Tribe, Luffy angrily declared he would make them both pay one day. His hatred for Kaido, which he shared with the Kozuki Family, is the main reason for the formation of the Ninja-Pirate-Mink-Samurai Alliance.

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