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The Straw Hats are a very infamous and powerful pirate crew led by the captain, Monkey D. Luffy. The Straw Hats are made up of people who have dominated Luffy's adult life and were all recruited personally by Luffy. They have all developed a deep bond with each other and it is fair to say that Luffy values no one more than his Straw Hat crew members, seeing them less as his crew and more as his family. His dedication to them is boundless and he will go above and beyond for any of them, with this sentiment being reciprocated by all of them.
Each member of the Straw Hats has gained extreme notoriety because of their association with Luffy and for aiding him in nearly every single one of his exploits. This has resulted in a cumulative bounty of a staggering 3,161,000,100, across ten members, ranging from as low as 100 to as high as 1,500,000,000. This reputation and notoriety have strengthened their bond with their captain as they feel they could not be anywhere else but on their ship alongside him. Luffy does not discriminate against any of them when recruiting or giving them orders and is consistently grateful for the support his friends provide him. Part of Luffy's ability to succeed is him being able to have absolute faith in his crew members' abilities in any situation they find themselves in. This was made most apparent when Luffy fought Rob Lucci and he noted that he could not go and save his crew as he would have to take his eyes off Lucci, who would then quickly kill them all, and so chose to trust his friends to save themselves instead, which earned him the CP9 agent's praise. Following the time-skip, when his crew was concerned about his plan to team up with Trafalgar Law to take on the Yonko, Kaido, he openly stated that he is not concerned if Law ends up betraying him as he has faith in all his crew members to back him up since they have gotten much stronger, which caused Nami, Usopp, Franky and Chopper to comically blush.
Compared to other pirate captains, Luffy does not impose any sense of superiority over his crew and treats them as complete equals. He is easily the most laid back out of them all and is dominantly responsible for the fun that his crew has on their journey, being the life of every party they have, and succeeds in putting a smile on all their faces even through the worst of times. He is comfortable with surrendering his authority when the situation calls for it, something that is dominantly seen with Nami, his navigator, as he allows her to be the voice of authority when it comes to sailing the ship across the seas. Another time was when he allowed Sanji to be the acting captain after he is separated from Nami, Chopper, and Brook by the Big Mom Pirates whilst on Dressrosa. None of his crew members refer to him as ‘captain’ and instead call him by his name, a sign of how close they are. Despite the fact that they can all be frustrated by some of Luffy's reckless decisions, they all share an undying loyalty to him and will follow his orders without question whenever he is serious. Unlike most pirate crews, Luffy's crew seems to be the only one to commit some act of violence towards their captain, mostly in comedic fashion, as a way to vent their frustration with him, Nami being the biggest culprit.
As noted earlier, Luffy does not have a preference when recruiting someone, not on sex, race, age, or even strength. He is somewhat aware of having to recruit people who are capable in specific professions, such as cooking, medicine, and navigation, and has managed to recruit some of the very best in each one. He has pestered most of his crew members to join, such as Zoro, Nami, Sanji, Chopper, Franky and Brook, with Usopp and Robin joining of their own accord. Jinbe is much more mixed on this front as he wanted to join but only after he had concluded some unfinished business. He also has the tendency to recruit people he just met, such as Brook, and again with numerous zombies he found interesting whilst on Thriller Bark. For Luffy, his crew act as a source of inspiration for him. When he had reached his lowest point and fell into a pit of despair after the death of Ace, he was able to recover when Jinbe reminded him of his crew and, realizing he has something to live for, cried out that he wanted to see them all again.
Luffy's determination for his crew has been put on full display numerous times. After Nami had betrayed him he followed her back to her home village and managed to defeat Arlong, the fish-man who had cruelly oppressed her since she was a child, in order to free her from him and have her return to his crew. He carried a sick Nami on his back and an injured Sanji up a 5,000-meter mountain in order to get them medical attention during a blizzard, which was made even more grueling due to rubber's reaction to the cold. When Nico Robin was taken by CP9 to Enies Lobby he stormed the facility, fighting through thousands of Marines and defeated two members of CP9, including their strongest fighter, Rob Lucci, to get her back. After Sanji had been taken by the Yonko, Big Mom, he infiltrated her territory, sabotaged the wedding, fought Charlotte Cracker and Charlotte Katakuri for eleven and ten hours respectively, and remained defiant even as Sanji brutally attacked him just so he could get him to return. He was left completely distraught after he fought Usopp and kicked him out of the crew, feeling great sadness over the loss of his friend, and was overjoyed once he returned. He was extremely angry when he saw Robin and Zoro had been defeated by Enel whilst Nami had been taken captive by him and vowed to defeat the supposed god. When the Franky Family had assaulted Usopp, Luffy stormed their home along with Zoro, Chopper, and Sanji and defeated them all to avenge their crewmate. After he witnessed Kaido destroy Oden Castle, where his crew was hiding, he flew into a rage and attacked him.
He has the habit of putting his crew in great danger, however, he does not do so out of a disregard for their lives but instead because he has absolute faith in his and their abilities. He burdens himself with the responsibility of protecting every single member of his crew if the situation calls for it and although this has dominantly worked out in his favor it eventually led to him losing every single one of them whilst on Sabaody Archipelago when Bartholomew Kuma used his Devil Fruit abilities to scatter them across the seas. This experience crushed Luffy as he lamented himself for not being able to save a single one of his friends. All of his crew members are aware of the effort he puts in trying to protect them as he always takes on the strongest opponent in every fight they get involved in. This eventually led to some self-reflection for all of them after they heard that, whilst they were stuck on their respective islands, Luffy had fought in a major war between the Marines and the Whitebeard Pirates to rescue his brother, Ace, that ended with the latter's death. Having discovered he lost his brother and received Luffy's message to wait two years, they all independently decided to do everything they could to become stronger and more capable for their captain. Their dedication to Luffy has been a consistent theme of their friendship and was best shown when they all, in unison, bluntly refused Kuma's offer to save their own lives in exchange for their captain's. At varying points, members of the crew, specifically Usopp, Zoro, Brook, Chopper, Sanji, Nami, and Jinbe, have ridiculed anyone who has insulted Luffy's dream and have shown unwavering faith that he will become the Pirate King. On top of this, they all feel a debt of gratitude towards Luffy for being responsible for either reviving or initiating their own respective dreams.
His crew is very much aware of Luffy's idea of an adventure, with some, such as Nami, Usopp, and Chopper, often trying to hide information from their captain that could lead to him making a dangerous decision on their behalf. This was notable when Luffy overheard the details of Nami's new compass and how it points to the most dangerous island, causing Nami and Usopp to panic once they realized Luffy understood what had been said and even threatened to break the compass. This difference over 'adventure' often leads to them bickering about who decides to go where, particularly Luffy and Nami, nonetheless, they always look to him for a direction to go and for a decision to be made. Though Luffy has caused conflict due to his unorthodox thinking and rationale, his crew often accept that Luffy can understand what to do in each difficult situation they find themselves in and have come to rely on Luffy's abilities and power to pull them through tough battles, a fact stated by Robin to Bartolomeo.
The Straw Hat that Luffy dons has become the moniker of their crew and is extremely precious to Luffy, having received it from Shanks when he was just a child, and thus deeply cares for it, remarking that it is his treasure. He becomes greatly upset whenever he loses it or it has been damaged, with the hat having to be repaired by Nami. He rarely lets anyone else hold on to it aside from Nami, placing it on her head during the Arlong Park and Skypiea Arcs and letting her hold onto it during the Drum Island and Jaya Arcs. It is purported to be a sign of Luffy's absolute trust in whoever he gives it to. The only other member to have worn it is Usopp, briefly, during the Long Ring Long Land Arc. This trend has mostly subsided now that a string has been attached to his hat so that he no longer loses it whilst fighting.
The first crew member to join the Straw Hats and the second friend Luffy made out at sea, Roronoa Zoro is a former bounty hunter that hunted down pirates. He has become one of Luffy's most reliable crew mates due to his unwavering loyalty to him. The two sometimes clash due to their differing personalities but highly respect and admire each other. They are good friends and are easily the deadliest duo among the Straw Hats, and out of all the crew members, Zoro and Luffy share the most apparent ‘brothers in arms’ relationship.
When Zoro met Luffy for the first time in Shells Town he was initially completely against his offer to join his crew, finding the idea laughable due to the nature of his work. However, upon discovering that he would be receiving a dishonorable death at the hands of a corrupt Marine he agreed to Luffy's offer if it meant being saved. Zoro has an extreme affinity for honor and thus followed through on his deal with Luffy after he had been saved by him, but warned his new captain that he would cut him down if he got in the way of his dream of becoming the World’s Strongest Swordsman. However, Luffy shrugged this off and simply said that the Pirate King should have the World's Strongest Swordsman by his side.
Since then, Zoro has followed Luffy faithfully and has been by his side on every step of his journey. The two have clashed from time to time, such as on Whiskey Peak when Luffy mistakenly believed that Zoro had slaughtered innocent villagers because they gave him food he did not like. Nonetheless, Zoro has never given Luffy any reason to doubt his loyalty and his actions have shown that he is perhaps the most dedicated to him. He trusts his captain's judgement, despite his simple-mindedness, and followed Nami back to her home village on Luffy's order after she had betrayed them, despite disagreeing with the decision to get her back. He saved Smoker, even though he is a hostile Marine, because Luffy ordered him to do so. He followed Luffy's order when he told him not to fight back when being assaulted by the Bellamy Pirates whilst in Mock Town. At the risk of his own life, he attempted to cut down Giant Jack when Luffy and Nami requested him and the others to do so, which led to him being directly attacked by Enel. Due to his belief that he must follow a captain's order without question he can often be frustrated by Luffy's mellowed personality and lack of initiative when it comes to leadership duties, and at one point threatened to leave if Luffy accepted Usopp back into the crew with open arms so readily. He regularly enforces Luffy's rights as captain and reminds his fellow crewmates that a captain’s words are absolute.
Zoro is one of Luffy's most trusted advisers and often acts as the unofficial first mate as he compensates for what Luffy lacks, such as a stern approach when reprimanding other crew members who fail to maintain their composure. This notably occurred during the Davy Back Fight when he admonished Chopper when he became frantic after being forced to join the Foxy Pirates. He reminded Luffy, after his fight with Usopp, that a life of a captain is not easy and that if he wavers the crew has no one else they can turn to. He later reminded Luffy that Usopp went against his captain, something that is unforgivable, and believed that accepting his return so easily would allow him to walk all over his authority as captain. This rationale convinced Luffy not to immediately let Usopp return and instead waited for him to apologize. He also reprimanded Luffy on Punk Hazard for letting his guard down against Caesar Clown, as he felt frustrated that they had just entered the New World and are already struggling. When he arrived on Zou with Luffy and the others and discovered the situation regarding Sanji, he advised Luffy to not be concerned over him as he had gotten himself involved with Big Mom, a Yonko, which complicates their current plans against Kaido.
Luffy recognizes Zoro as one of the strongest members of his crew and has complete faith in his abilities. He is never overly concerned about Zoro as he is well aware of his incredible sword skills and knows he can take care of himself. When he was told by Mr. 5 that his colleague had captured Zoro, Luffy was not at all worried, warning him that Zoro would comfortably defeat them. Whilst on his way to Enies Lobby, Luffy casually asked him to slice an oncoming train cart in half, which left the Franky Family stunned, as he knew Zoro was more than capable of such a feat. Whilst making his way towards Donquixote Doflamingo he reassured a concerned Viola that Zoro will be fine taking on Pica by himself. Nonetheless, he still cares for Zoro and was distraught when he believed that Mihawk had killed him and tried to attack the Shichibukai, but was relieved to see he had allowed his swordsman to live. He was upset to see what Enel had done to Zoro, and the others, and swore to take him down. After Zoro was put into a coma, following his encounter with Bartholomew Kuma, Luffy tried to make him well again by giving him a barrel full of sake knowing it is his favorite drink.
He cherishes his friendship with Zoro and was overjoyed when he was reunited with him in Wano, launching himself towards the swordsman and hugging him, with Zoro returning the sentiment by greeting Luffy with a big smile. Luffy can still frustrate Zoro and is not above trying to pull pranks on him such as putting his bugger in his drink, however, this did not turn out in his favour. Due to Zoro's fierce rivalry with Sanji, he had expressed indifference when he had been taken away by the Big Mom Pirates, however, Luffy teased him when he found Zoro overhearing the details of what happened to Sanji, showing that he secretly does care. Luffy sometimes propels himself at Zoro when trying to catch up to him, causing them to collide, and has grabbed Zoro when jumping off high places to quickly reach the bottom, something he does not enjoy. He unintentionally upset Zoro due to his poor handling of a katana he had borrowed and thrown the scabbard about, but still chose to tease the swordsman by refusing his request to inspect his sword.
Zoro shares a similar composed mentality to that of Luffy's as he is rarely shocked or overwhelmed by the dangerous situations he finds himself in and takes on any challenge in front of him with a smile. He has a blood lust for battle and is thus a valuable and dependable ally to Luffy during fights as he is never fazed by who he is up against. On top of this, his sword skills, physical prowess, and mental fortitude, especially post time-skip, has made him one of Luffy's most dangerous combatants and has earned him the fourth-highest Straw Hat bounty at 320,000,000. Zoro tends to take on the second strongest person of any group they face, with Luffy facing the strongest opponent, this has included Cabaji, Hatchan, Mr. 1, Ohm, Kaku, Ryuma, Hyouzou, and Pica. He has also fought the strongest opponent on occasions, such as Buggy, Mihawk, Enel, Kuma, Hody Jones, and Admiral Fujitora. He has dropped his initial condition of cutting Luffy down if he ever got in the way of his dream, tearfully declaring to his captain, after his defeat to Mihawk, that he will never lose another fight again whilst he is his swordsman, a promise he has somewhat maintained. Whilst on Thriller Bark, he was prepared to give up his own life for Luffy's when given the choice by Kuma, stating that he cannot achieve his own dream if he cannot help Luffy achieve his. This led him to take on all of Luffy's pain that he had accumulated from his fight with Gecko Moria, on top of his own, that left him in a coma for three days.
Although he has the habit of reassuring people about Luffy's well-being during fights, often telling them to believe in their captain, he does care for Luffy and will try to protect him if he is in trouble, such as when he rowed all the way to Orange Town after Luffy was captured by a bird and came to his aid when he was subsequently made a prisoner of the Buggy Pirates. He even carried the cage Luffy was locked inside despite being grievously wounded. When Luffy was about to be executed by Buggy in Loguetown, Zoro, alongside Sanji, desperately tried to reach the platform he was on in order to free him. Whilst on Jaya, he held Bellamy at the edge of his sword after he attacked Luffy before warning him to think about his next step. He also managed to slice Kuma, whilst on Thriller Bark, when the Shichibukai tried to take Luffy away. He tried to leave Kuraigana Island after discovering that Luffy had fought in the Battle of Marineford and lost his brother, Ace, right in front of him, worrying for his captain’s well-being. After receiving Luffy's message to wait two years, he decided to forgo his pride and begged Mihawk to train him in order to become stronger for Luffy's sake. He implied during the Long Ring Long Land Arc that Luffy is the sole reason for him being a pirate and stated he'd have no reason to continue being one if he could not have him as his captain.
Zoro thinks highly of Luffy and greatly admires him for his unwavering determination, complete lack of fear, incredible fighting abilities, and even, at times, his craziness. He was impressed when he took a blade to the back of the head from Jango only to pull it out and remain mostly unfazed. When on Thriller Bark, he emphatically stated to Kuma that Luffy would become the Pirate King. On Dressrosa, he intercepted Pica's attempts to attack Luffy multiple times and told him that he is not worthy to face his captain. He was pleased to see Luffy was able to use Haoshoku Haki on Fish-Man Island to knock out 50,000 of Hody Jones's crew, jokingly remarking that if he was not capable of doing that much he was not worthy of being his captain. He has shown to have complete faith in his captain such as when, after Luffy stayed behind to fight Crocodile, he ordered Chopper to keep the crab they were riding on moving and reassured a worried Vivi that Luffy will be fine.
Nami, who was originally part of the Arlong Pirates, is the second person to join Luffy's crew. She and Luffy share one of the closest relationships among the Straw Hats and have a mutual reliance on each other, with Luffy relying on Nami as his navigator and for day-to-day tasks whilst Nami relies on Luffy as a pillar of strength during dangerous and frantic times. The two are often seen arguing due to Nami getting frustrated by Luffy's antics and stupidity and Luffy being annoyed at Nami for being overbearing and ruining his fun. Nonetheless, they deeply care for one another and balance each other out, Luffy is the fighter and Nami is the thinker.
Luffy is dominantly responsible for changing Nami's views on pirates. Due to her experience with Arlong, she held a strong hatred for pirates, and Luffy was no exception, at one point she tried to attack him after seeing the devastation that had been done to Orange Town. However, after seeing his interaction with the dog, Chouchou, working alongside him to defeat Buggy, and realizing he is not as bad she originally thought, she decided to cooperate with him at the very least as a means to an end, but eventually joined his crew after getting closer to him and seeing his kindheartedness first hand. However, Nami betrayed Luffy and the crew during the Baratie Arc, having stolen their ship with all their treasure on board, and returned to Arlong, but did so with tears in her eyes as she wondered if she would ever meet them again and hoped Luffy and the others would still consider her their friend. Following his victory over Don Krieg, Luffy traveled to Nami's village and defeated Arlong for her, liberating both her and her village from his rule. Ever since she has been a mainstay of the crew and has developed a fierce loyalty to Luffy, feeling indebted to him for everything he has done for her.
Nami acts as one of Luffy's lead advisers and counsels him numerous times throughout their journey. She was present when Luffy formed an alliance with Trafalgar Law, she sat by Luffy's side when he formed an alliance with Capone Bege and the Fire Tank Pirates, and comically offered up her negotiating skills during the formation of the Ninja-Pirate-Mink-Samurai alliance. She also negotiated the money that Luffy and their crew earned from the treasure they had taken from Skypiea and avoided them getting scammed. After Luffy and Usopp got into an argument that led to Usopp leaving the crew, and challenging Luffy to a duel, she talked to Luffy privately about the matter and tried to get him to resolve things. Whilst on Dressrosa, Nami convinced Luffy that it would be best for her, Sanji, Chopper, Brook, Momonosuke, and Caesar Clown to sail towards Zou instead of returning to Dressrosa as the latter would threaten to undo Law's efforts against Donquixote Doflamingo. When the crew first met Vivi, in Luffy's absence, Nami negotiated the agreement with Igaram to return Vivi to Alabasta, thereby instigating the entire Alabasta Saga.
Throughout their journey she tends to be the one to keep Luffy in line, making sure he is focused on the task at hand and that he does not do anything too reckless, often playing the role of explaining to Luffy why he cannot do some of the crazy things he wants to do. This was seen when she stopped Luffy and Zoro fighting whilst they were on Whisky Peak, and again when the crew landed in Mock Town where Nami made him promise her not to fight anyone. Nami has also occasionally displayed a keen sense of Luffy's great appetite, as just before she left with him to go to Enies Lobby she rounded up meat for him to eat, as well as sake for Zoro. Just before the plan to sabotage Sanji and Pudding's wedding, she told Jinbe the only thing that Luffy would get up for is food when he was struggling to wake him up. At one point, she even feeds Luffy a piece of meat whilst on Punk Hazard. When talking with Haredas, she says that it is her responsibility to deal with Luffy's reckless nature and to make sure he does not die when traversing the seas. Despite acknowledging that he is high-maintenance, and often getting frustrated by his actions, she admits to Haredas that she wants to help him as much as possible after reflecting on how far Luffy has gone for her and acknowledges that she owes him so much.
She sees Luffy as the person she can turn to and rely on when emotionally distressed or feeling frightened. This was first seen on Syrup Village where she was relieved to see he was ready to fight after she had managed to wake him up. When she broke down after Arlong had betrayed her deal, denying her the chance to free herself and her village from him, she turned to Luffy in tears and asked for his help. When she was stuck in Mr. 3's candle wax and close to death she was overjoyed that Luffy had arrived and told him to beat the Baroque Works agent, and everybody else, to the ground. Whilst she was sick with a mysterious illness she sided with Luffy when he wished to carry her to the doctor who lives on top of the mountain on Drum Island and openly stated her complete faith in him getting her there safely, despite the extreme risks. She prayed for Luffy to come to save her when Enel had taken her to his ship and became overjoyed after he had arrived. During the Water 7 Arc she tearfully begged Luffy to get Robin back after discovering she left their crew, not of her own volition, but to keep them safe. This contrasted sharply to when she informed Chopper of the same thing earlier and instead expressed her happiness that Robin did not want to leave them after all. When she was kidnapped by the Yeti Cool Brothers she scolded them and warned them that Luffy would come and save her. On Sabaody Archipelago, she desperately calls for Luffy to help her just before she is sent away by Bartholomew Kuma. During the Zou Arc, when reuniting with Luffy, she immediately ran up to him and hugged him tightly whilst apologizing for allowing Sanji to be taken away by the Big Mom Pirates.
Like all the other members of the Straw Hats, she has complete faith in Luffy's abilities. She rarely doubts him in a fight and is often left amazed and inspired by his feats, strength, and determination. She was delighted to see Luffy had defeated Arlong and cried when he called out to her to say she is his friend. She was moved by Luffy's determination to ring the bell on Skypiea in order to exonerate Mont Blanc Noland and inform his descendant, Mont Blanc Cricket, of its existence and location, and was willing to aid him in this endeavor whilst entrusting her life to him. She was stunned by Luffy's sheer strength when he destroyed two buildings after getting stuck between them on Water 7. After the time-skip, she was amazed at how much stronger Luffy had gotten when he defeated the Kraken effortlessly whilst on their way to Fish-Man Island, despite being underwater. When Luffy defeated Charlotte Cracker with Gear Fourth Tankman she was left completely stunned and soon became incredibly happy at her's and Luffy's victory against a Sweet Commander. Nami was moved to tears by Luffy's defiant speech to Sanji after they had just fought each other, despite her anger for what Sanji did to him. She was relieved and amazed to see Luffy had, not only survived his fight with Charlotte Katakuri, but had won. Nami was also left utterly astonished by Luffy's lineage when she found out the Marine hero, Monkey D. Garp, is his grandfather. Upon seeing the two argue about saying their goodbyes she remarked that their selfishness shows they are blood-related. She was even more shocked when she was told his father is Monkey D. Dragon, commenting that he is an outrageous man.
Despite her faith in him she is regularly concerned for Luffy throughout their adventures and tries to look out for him. This has come during Luffy's numerous battles, where she has shown to be worried for him, such as his fights with Arlong, Enel, Hody Jones, Sanji & Big Mom's army. In the case of Sanji, she was much more distressed and angry at the beating Luffy was getting, as he refused to fight back, and slapped Sanji as a result. She has also shown to be worried for Luffy outside of battle, such as when she caught him after he had defeated Kuro, when she held onto his hand whilst telling him not to die after he was poisoned by the Armoured Stone Fish before showing her gratitude when Reiju saved him, but blushed when she did so via mouth-to-mouth, and when she became distressed when he tried to rip off his own arms in order to escape the prison they were trapped in. Nami has also become frantic when Luffy has put himself in great danger, such as when Arlong Park collapsed with him still inside, when he refused to run away from Big Mom's army and when he went off to fight Katakuri on his own, whilst anguishing over his order to break all the mirrors on the Thousand Sunny as doing so would trap him in the Mirro-World. Nami is also aware of how close Luffy is to his brother, Portgas D. Ace, and has shown concern for him regarding his brother. Such as when, after leaving Thriller Bark, she goes up to Luffy and asks how he is doing after being informed about the state of Ace's Vivre Card and smiled after he reassures her. When she read that Luffy witnessed Ace get killed before his very eyes she became distraught and tried to escape Weatheria whilst telling herself she needs to get to him before his heart completely shatters as she knows full well what he is going through. When Haredas pointed out her "fake tears" were still flowing she became embarrassed and punched him.
Luffy has shown to have absolute loyalty and faith in Nami and does not doubt her for a second, even when she betrayed him Luffy's opinion of her did not waver and he remained determined to have her in his crew, in spite of Zoro and Usopp's protests, flat out stating to them that he would not accept anyone else as his navigator. He was greatly angered when Johnny mistakenly believed that Nami had killed Usopp and called him a liar and threatened to "kick his ass" for saying such things. This differs greatly when he believed the accusation that Zoro had slaughtered the people of Whisky Peak in cold blood despite the source being unreliable. Luffy was hellbent on getting Nami back to his crew and completely disregarded her request to leave her village, despite angering her, and chose not to listen to Nojiko tell the story of Nami's past as nothing she could tell him would change his mind on trying to get her back. Even though Nami has no talent for fighting Luffy does not hesitate to have her by his side in battle, such as when they worked together in defeating Buggy in Orange Town and again when they worked together to defeat the Sweet Commander, Cracker. He never tries to stop her fighting tough opponents as he trusts her to win, and has no qualms when she goes off to complete tasks she has been assigned regardless of the danger. It appears that Luffy holds the most trust in her out of the crew as she is the only person he consistently surrenders all of his authority to when it comes to sailing the ship and follows her orders to the letter. He has complete trust in her intuition and knowledge as a navigator and never questions her. When Inuarashi praised her navigation skills Luffy chimed in by stating how amazing she is and patted her on the back but managed to annoy her by how hard he was hitting her, although she was initially thankful to him for the compliment. He also trusts her enough to let her be in charge of the finances of the crew.
Luffy has been shown to care for Nami's well-being as he often comes to her aid and does not tolerate anyone upsetting her, standing by the promise he made to Genzo back on Cocoyasi Village. When he woke up on Syrup Village he showed his concern for her after he noted the injury to her shoulder but was relieved when she told him she is fine. He angrily shouted at Arlong, right after he punched him, not to make his navigator cry after the fish-man had upset her. Later, Luffy became extremely angry when he deduced that Arlong had imprisoned Nami in a room throughout her childhood to draw maps for him and told the fish-man that he knew how to help her as he proceeded to destroy the entire room, with Nami tearfully thanking Luffy once she realized what he is doing. When she was sick with a mysterious illness Luffy became extremely worried for her and sought to get her to a doctor immediately. Whilst she was in bed he did everything he could to try and cheer her up and spent most of his time in her room. Such was his determination, he carried her, and an injured Sanji, up a 5,000-meter high mountain barehanded, and in a blizzard that significantly increases his pain due to rubber’s reaction to the cold, in order to get a doctor for her. On Water 7, when Nami came to him in tears and told him the real reason why Robin left them, he reassured her that he would not let Robin die. Notably, Luffy holds a grudge on Nami's behalf for all the suffering she went through as he initially refused to save Hatchan because he is a former member of the Arlong Pirates, however, he agreed to save him after Nami wished for him to do so. As his crew was being torn apart by Kuma, he was angry when he failed to reach out for her just before she was swiped away and furiously attacked the Shichibukai. Whilst on Punk Hazard, when she was kidnapped by the Yeti Cool Brothers, Luffy came to save her and was thankful when Trafalgar Law helped him do so. He also showed his worry for her during his fight with Big Mom's army after she was captured by them. Furthermore, Luffy has frequently carried her to safety, often via his Gomu Gomu Rocket, although she is not fond of this kind of escape.
Throughout their adventures, Nami has been the only person Luffy has consistently given his straw hat to, either to wear as a source of comfort before he fights or to look after it. The first time she held it was in Syrup Village after Luffy had beaten Kuro. Later on, Luffy placed his straw hat on her head right before his fight with Arlong, with Nami recalling Luffy saying his hat is his treasure and teared up at the gesture. She later placed it back on his head after he had won. He gives Nami his hat again, before he continues his fight with Enel, to reassure her after she began to panic. Nami continued to look after his hat even during her own fight with Enel and, at one point, grips it tightly when she gathers the courage to oppose him. For an extensive amount of time, after her battle with Enel, she continued to keep hold of Luffy's hat. He also let her hold onto his hat at varying points during the Drum Island and Jaya Arcs. It is suspected that whoever Luffy gives his hat to is a sign of who he trusts the most due to its extreme sentimental value. This act has mostly subsided now that Luffy has a string attached to his hat that stops him from losing it during a fight and Nami has become more active in battles. She is the only person he has allowed to fix his hat when it has been damaged, as well as letting her modify it, as he let her stitch Ace’s Vivre Card on to the ribbon of the hat. She is the only crew member that Luffy has divulged the sentimental value of his hat, with Nami having become fully aware of how important it is to him.
Nami wishes to be more helpful to Luffy and, realizing her own shortcomings, she turned to Usopp to help make her a device so she can be more capable in fights, feeling guilty that Luffy and the others constantly have to save her. When she received Luffy's message to wait two years she was frustrated by this decision but decided to spend her time to get stronger and become a more capable navigator for Luffy's sake, believing she owed him so much for all he has done for her. The two have rarely fought side by side but did so against Buggy when they first met and again when fighting Cracker, where she proved to be crucial to Luffy's victory both times. She also stayed by Luffy's side to fight against Big Mom's army when he refused to hide, which ended with them both being captured. When she found out Luffy was going to save Sanji she grabbed Luffy and was insistent on going with him because she knew he could not get there safely without her and felt responsible for the trouble. She is very loyal to Luffy and has become a firm believer in his quest to become the Pirate King, slapping Sanji for assaulting her captain and disrespecting his dream. During her fight with Charlotte Cracker she remained defiant towards him, telling him that he might be the right-hand man of a Yonko but her captain will become the Pirate King. When Luffy demanded that she break all the mirrors on the Thousand Sunny, she ensured that her captain's orders were followed despite being worried, telling Chopper and Brook that they should not get in Luffy's way whilst he fights Katakuri.
Nami appears to enjoy seeing Luffy happy as she could not help but smile whilst eavesdropping on Luffy, Koby, and Helmeppo joyfully reminiscing about how they met. She also expressed happiness at Luffy being reunited with Usopp after the latter's return to the crew. The two can often be seen arguing, which has become a staple of their friendship, although the arguments they have dominantly comes from Nami. A running gag between the two is Nami's tendency to habitually overcharge Luffy whenever he requests something from her, such as after lending her jacket to him during the Drum Island Arc she charged him a heavy sum for ruining it. She has since toned down this habit as it once inadvertently led to Luffy destroying their food supplies when he tried to cook in Sanji's absence. Another gag is Nami being one of the very few people who can hurt Luffy at will despite him being made of rubber, but for the most part Luffy tolerates it. Since the time-skip, Nami has become more accepting of Luffy's antics, whereas before she would try and keep him under control to avoid him causing chaos, which normally ended in failure, she now accepts whatever chaos Luffy brings with him. This change notably started whilst in Sabaody Archipelago when she just accepted that her captain had punched a Celestial Dragon and brushed it off, despite the severe repercussions. Nonetheless, she is very wary of her captain's desires for adventure, knowing that it often leads to danger and chaos, and screamed when she realized Luffy understood how the New World Log Pose worked.
Usopp, the former captain of the ‘Usopp Pirates’, became the third member to join Luffy's crew. The two share a close bond of brotherly love and act like best friends. Whilst Usopp is cowardly and weak Luffy does not disparage him for it in the slightest and values him as a crew member, being distraught when he was forced to kick Usopp out and overjoyed when he had returned. They are seen engaging in silly antics on the ship and the two are notorious for being the idiots of the crew. Like Nami and Chopper, he greatly fears Luffy's lust for dangerous adventures.
They first met on Syrup Village with Usopp, being a habitual liar, trying to intimidate Luffy, Zoro, and Nami with his exaggerated crew size. Later, during Usopp’s confrontation with Kuro, Luffy remembers that he had met Usopp’s father, who is an officer and sniper of the Red-Haired Pirates, back on his home village. He informed Usopp of this and the two quickly bonded. Following Luffy's victory over Kuro, who was plotting to kill his friend, Kaya, Usopp became inspired to go out to sea and start his own pirate journey. Initially believing they would not want him to join, he became overjoyed when he was invited aboard the Straw Hats’ ship to sail with them, becoming their newest member.
Since then, he has been a faithful member of Luffy's crew and does his best to contribute wherever he can. He was initially responsible for patching up the ship before the crew recruited Franky and is also a gadgets expert who invents various equipment and weapons to become more useful to Luffy in fights, particularly with Dials. When testing the cannon on the Going Merry, he greatly impressed Luffy with his accuracy and was made the gunner of the Straw Hats. He was also responsible for designing the official flag of the Straw Hat Pirates after Luffy proved to not have a talent for art. Usopp has aided Luffy in battle, as well, such as when he tried to help him when he was at Mr. 5's mercy and later was responsible for breaking Luffy free of Miss Goldenweek's Colour Traps. Whilst on Skypiea, he launched a barrage of attacks on Giant Jack so it would fall westwards after Luffy, through Nami, asked him and the others to do so, despite having seen Zoro get struck down by Enel earlier for attempting the same thing.
Usopp holds great admiration for Luffy and often lies about himself in the mold of him, falsely claiming credit for some of his achievements. Luffy has made such a profound impact on him that he has mostly shed his cowardly personality, although some of it still remains, having become more comfortable and adept at fighting and adventuring. This change first started whilst on Cocoyasi Village, when, despite normally trying to discourage going into any kind of danger, he chose to walk by Luffy's side when he stormed Arlong Park for Nami. Whilst on Water 7, he felt extreme guilt after he was assaulted and robbed by members of the Franky Family, losing a large portion of the crew's money, and tearfully told Nami he could not face Luffy and the others as a result. However, he is also capable of irritating Luffy, such as when he proclaims himself to be the captain or when he once tried to redesign the crew's jolly roger to resemble him which prompted both Luffy and Zoro to hit him. When trying to recruit Chopper, Luffy chastised Usopp for scaring him off after he called him a "monster". Although rare, he has managed to anger Luffy, such as when he asked the former first mate of the Roger Pirates, Silvers Rayleigh, for the location of One Piece. This resulted in Luffy delivering an impassioned speech to him about the importance of adventure and convinced him that it is better not to know at all.
The two reached a breaking point over the decision regarding the Going Merry. Usopp cherished the ship as it embodied his friendship with Kaya and took great pride in his responsibility to repair the Merry, the only thing he felt he was truly useful for. Thus, he was extremely angry that Luffy was so casually willing to abandon it. In his anger, he quit the crew and challenged Luffy to a duel for the Going Merry, but lost the fight despite putting on a good show. Luffy was left in tears about having to fight his best-friend and despised every moment of it. Having won, Luffy left the Going Merry to Usopp and solemnly walked away, kicking him out of the crew. This did not affect their genuine concern for each other, however. Upon discovering the situation with Nico Robin and his desire to help, but knowing he could not face Luffy, he disguised himself as 'Sogeking' and succeeded in fooling Luffy, as well as Chopper, that he was not Usopp despite failing with everybody else. Under this disguise he aided Luffy and the crew in their quest to save Robin. At the end of the Enies Lobby Arc he was expecting to be welcomed back into the crew with open arms but panicked when he saw they were sailing away, this realization caused him to break down and scream out he is sorry, regretting his actions, which prompted Luffy to stretch his arms over and grab him, tearfully welcoming him back into the crew. Luffy was originally more than prepared to allow Usopp to return, desperately wanting to do so in fact, but was counseled by Zoro that doing so would tarnish his authority as captain and thus had to wait for him to apologize first. Their friendship immediately recovered following his return and their qualms were over, they continued where they left off, with their shenanigans aboard their new ship, the Thousand Sunny.
Usopp cares for Luffy and was initially devastated when Miss Merry Christmas told him that he had apparently died before refusing to believe her. After hearing the news of Ace's death during the Battle of Marineford, he desperately tried to escape the island he was trapped on as he felt he needed to be there for Luffy. He later resolved to become stronger for his captain’s sake after he received Luffy's message to wait two years. He trained with his new friend, Heracles, and made one of the most notable improvements among the Straw Hats. He is also an adamant believer in Luffy's dream to become the Pirate King, being fully convinced that his captain will succeed and proudly declared so to both Mr. 4 and Miss Merry Christmas on Alabasta. Despite being a coward, he will ridicule anyone who insults Luffy, even though he might be much weaker than them, and will defend his dream from people who laugh at it. He notably remained defiant in front of Bartholomew Kuma when given the option to save his own life in exchange for Luffy's. During Luffy's fight with Rob Lucci, he gave an emotional speech to his captain, reprimanding him for losing and even threatened the CP9 agent himself as a way to spur his captain to get back on his feet. On Dressrosa, he became so worried about the thought of losing his memories of Luffy, due to Sugar's Devil Fruit abilities, that he awakened his Kenbunshoku Haki in order to accurately launch his attack to stop her turning Luffy into a toy.
Despite generally looking down on people who are cowardly, such as Koby and Shirahoshi, Luffy has never insulted Usopp for his cowardly nature and treats him as an equal member of the crew. He is often concerned for Usopp's well-being as he is aware of his lack of fighting skills and timid personality when faced with danger, but still has faith in him. Luffy has shown to also be protective of Usopp, such as when Kuro went to attack him and he intervened by punching Kuro to the ground. Whilst fighting the Black Cat Pirates he became furious with them when they began to laugh at Usopp and threatened them. After Usopp was brutally assaulted by the Franky Family, he became extremely angry and attacked all of them alongside Zoro, Sanji, and Chopper, whilst destroying their house in the process. After the time-skip, he has gained a lot more confidence in Usopp's abilities and stopped Trafalgar Law from going after Caesar Clown because he knew Usopp could comfortably capture him. He had no reservations with Usopp being involved in the Tontatta's plans, alongside Franky, as he believed he would be of great use to them. He was also pleased that Cavendish acknowledged Usopp for his success in defeating Sugar and ending her Devil Fruit ability over the people of Dressrosa. He also seems to view Usopp's habit of lying as an admirable skill, remarking to Arlong that, alongside not being able to use swords, navigate or cook, he is also not capable of lying as Usopp can.
A key feature of their friendship is how often they like to fool around and have fun, occasionally doing impersonations of other crew members such as Sanji and Chopper. Like some of the others, Usopp fears his captain’s affinity for adventure and panicked when he realized Luffy had overheard how the New World Log Pose works and tried to tell Nami to destroy it. When he discovered that Luffy had partnered with Law, in order to take on a Yonko, he became frantic and tried to overrule this decision with a vote. He has become one of the characters to occasionally beat up Luffy for saying or doing silly things, even by his standards. When he found out about Luffy's father being Monkey D. Dragon, and his grandfather being Monkey D. Garp, he was left completely stunned. Usopp is the only other member of the Straw Hats, alongside Nami, to have worn Luffy's hat, very briefly doing so during the Long Ring Long Land Arc after he made Luffy wear an afro for his fight with Foxy. Before leaving with Zoro to get Nami back, he returned Luffy's straw hat to him after he lost it when he tried to attack Dracule Mihawk. They both share a similar desire of meeting the Red-Haired Pirates, with Luffy wanting to reunite with Shanks and Usopp wanting to reunite with his father. They are both extremely prone to being amazed by pretty much anything, such as ninjas, Franky's robotic inventions and Bon Clay's Devil Fruit abilities.
Sanji is a former cook of the Baratie and the fourth member to join the Straw Hats. He is arguably one of Luffy's favorite crew mates because of his incredible cooking skills that satisfy his gluttonous nature. He is somewhat more antagonistic to Luffy than most, as he gets frustrated by his reckless nature and dimwitted-ness, but nonetheless respects him immensely and values him as his captain and as his friend. He was in tears from having to fight Luffy after he had left the Straw Hats and was extremely happy to return to them, as was Luffy, who was excited for him to cook again.
The two first met during the Baratie Arc when Luffy was caught up in a dispute with the Head Chef, Zeff, for damaging the Baratie. When a starving Gin entered the restaurant and threatened the staff there he was kicked out, however, Sanji still gave him a dish to eat despite his actions. Luffy, seeing this act, was impressed and was insistent he join his crew but he refused. Soon after, Don Krieg arrived and threatened to claim the Baratie into his fleet, prompting Luffy to fight him. After being inspired by Luffy's fearless and determined victory over Don Krieg, and overhearing his work colleagues' desire to see him achieve his dream of finding the All Blue, he agreed to join Luffy's crew and gave an emotional farewell to Zeff and everyone at the Baratie.
Since joining he has been the official chef of the Straw Hats and regularly makes everyone’s food. Although he admitted to Luffy that he prioritizes the women first, and cooks the leftovers for him and the others, Luffy was not at all bothered by this as his food still tasted good. On top of being the cook, he is one of Luffy's most capable combatants and is easily in the top four strongest members of the Straw Hats having earned the third-highest bounty within the crew, standing at 330,000,000. He has proven to be extremely valuable to Luffy and has taken on some of the strongest opponents such as Kuroobi, Bon Clay, Jabra, Absalom, Vergo, Donquixote Doflamingo, Charlotte Daifuku, and X Drake. He also works well with him as a fighting partner and even fought by his side against Big Mom. Besides regularly fighting by his side in battle, he has made a habit of saving Luffy whenever he has fallen into the water, such as immediately after his victory over Don Krieg, again when he freed Luffy after he had been trapped underwater at Arlong Park and when escaping Crocodile's casino via a flooded tunnel. Whilst in Loguetown, he desperately tried to save Luffy from Buggy's attempt to execute him and even fought Smoker, alongside Luffy, when escaping. Sanji was also the one responsible for freeing Luffy, as well as Zoro, Nami, Usopp, and Smoker, from Crocodile's cage. After Luffy had fought Big Mom in his Gear Fourth form, Sanji carried him away from the Yonko to keep him safe. Knowing where Luffy would be exiting, he waited patiently for his captain’s return from his fight with Charlotte Katakuri and proceeded to carry the unconscious Luffy from Cacao Island back to the Thousand Sunny, fighting through hoards of Big Mom’s crew and suffering numerous injuries along the way.
Luffy loves Sanji's cooking and will stop whatever he is doing in order to have some of whatever he makes. After the time-skip, Luffy was excited to eat more of Sanji's food, having gone two years without any, but had to settle for the food Boa Hancock gave him as Sanji was unconscious. When Sanji had returned to the crew, following the events on Whole Cake Island, Luffy became overtly excited when he said he would cook something for them. He values Sanji highly as part of his crew and outright stated that he cannot become the Pirate King without him, which caused Sanji to break into tears. Due to Sanji's honest personality, Luffy rarely gets annoyed with him but did so when he refused to admit that he wanted to come back to the crew and punched him in the face even though he had earlier refused to fight back against him. Luffy also bears a grudge on Sanji's behalf, as he disregards all but one of Sanji's family members because of how cruelly they treat him. When Vinsmoke Judge questioned Luffy as to why he was so determined to get Sanji back in his crew, whilst listing all his failures, Luffy simply said goodbye and asked why he was naming all the good things about Sanji. Luffy's trust in Sanji is so high that he gave him the authority of captain when he, along with Nami, Chopper, Brook, as well as their prisoner, Caesar Clown, was forced to leave Dressrosa with the Thousand Sunny whilst being chased by the Big Mom Pirates.
After he had discovered that Sanji had been taken away to Big Mom's territory his determination for Sanji was put on full display. He traveled to the Yonko's territory, gatecrashed the wedding, fought against Big Mom, her army and Sweet Commanders Charlotte Cracker, and Katakuri, for an extensive amount of time against both of them, just to make sure he could get Sanji back safe and sound. He even promised Sanji that he would not move from where he was standing, nor eat any food, unless it was made by him. He stuck to this promise despite how badly his health deteriorated and even declined Reiju's offer for food. He was greatly angered by Cracker’s comments over Sanji's loyalty and attacked the Sweet Commander for saying Sanji would prefer to live a life of luxury with his new family. Luffy did not waver in the face of Sanji's stubbornness when he refused to return to the crew and chose to take the full brunt of Sanji's attacks without retaliating. Such was Luffy's desire for Sanji to return he was more than willing to allow his bride to join the crew so long as Sanji came back with her, but was disappointed to find out that such a marriage would mean Sanji joining the Big Mom Pirates. Luffy immediately accepted Sanji's request to help out his family as they were going to be assassinated by Big Mom and her crew, understanding that he could not force Sanji to leave his family behind.
Sanji is incredibly dedicated to Luffy and fully supports his dream of becoming the Pirate King. He competed with Zoro to be the one to take Luffy's place when Bartholomew Kuma tried to take Luffy away but was knocked out by the swordsman. Realizing Luffy's message, he chose to spend the next two years training with Ivankov and the Okamas to get stronger for Luffy's sake. He was impressed, but also not surprised, at Luffy being able to use Haoshoku Haki, remarking that he suspected he was capable of such a thing. He told Capone Bege that he would never do anything to risk Luffy's dream and believed with absolute certainty he would become the Pirate King. Despite this, he mocked Luffy's ambitions when he fought him but only because he wanted to try and discourage Luffy from chasing after him. He was extremely reluctant to leave the crew but did so under the threat of his former colleagues, adoptive family, and friends being killed. Despite genuinely liking Charlotte Pudding, who was his betrothed, he refused to marry her so he could return to Luffy and the crew. Echoing Zoro's beliefs, he stated he had lost his right to rejoin the crew after he had insulted and attacked his captain, but gave into Luffy's refusal of this excuse. When Pudding was worrying over Luffy's chances against her brother, Katakuri, he calmly told her that Luffy will be fine and her brother will experience his first defeat.
When meeting Monkey D. Garp, Sanji remarked on his incredible strength and was shocked when he found out he is Luffy's grandfather and was even more shocked by the identity of his father, Monkey D. Dragon. Due to his lustful desires, Sanji has been seen from time to time getting jealous of Luffy, such as when he discovered that he had been sent to Amazon Lily by Kuma, an island inhabited by the Kuja Tribe that are made up of exclusive women, and for having gained the affection of the Pirate Empress, Boa Hancock. He was also somewhat jealous of Luffy for gaining the admiration of Shirahoshi, shouting at him that he is a lucky bastard when she hugged him after he had saved her. He is also willing to chastise his captain if he does anything to a woman, such as when he punched Vivi, argues with Nami, or when he believed that he had done something terrible to Nico Robin. He tends to get frustrated by Luffy's eating habits and has to set up numerous safeguards to stop him from emptying the fridge during the night. Whenever food goes missing his first suspect is always Luffy. He was embarrassed when Luffy had discovered his raid suit that was given to him by Niji, with Luffy begging him to try it on.
Tony Tony Chopper
Tony Tony Chopper is a doctor from Drum Island who was formerly under the service of Dr. Kureha and was a student of the late Dr. Hiriluk. He is the fifth member to join the Straw Hats, the first Devil Fruit user, and is the crew’s doctor. Due to being the youngest member of the crew he is very impressionable of Luffy and gets involved in his silly antics despite his innocent nature. The two greatly respect each other and he admires Luffy as his captain, only questioning him whenever he is at risk of injuring himself or does not adhere to his medical orders. His admiration stems from Luffy accepting him for who he is, as opposed to a monster by nearly everybody else.
After Luffy had carried Nami and Sanji to the top of the mountain where Chopper resides with Dr. Kureha, he found the trio and nursed them all back to health, having been amazed by Luffy's effort for his friends. He got off to a chaotic start with him as he is an extremely timid person and was thrown off by Luffy's eccentric and bubbly personality. He was chased by Luffy when he was hungry as he was tempted to eat Chopper, but in reality he wanted to ask him to join his crew. He was moved by Luffy's determination to protect his pirate flag, which belonged to Dr. Hiriluk, atop his home from Wapol's attacks, and became grateful after he had defeated the former king. He was still refusing to join Luffy's crew, however, despite desperately wanting to do so. Whilst trying to explain how being half human and half reindeer makes him a monster, and as to why he cannot join his crew, Luffy flat out told him to shut up and to come with them, causing Chopper to cry and agree to join him.
He is grateful to Luffy, not just for accepting him for who he is, but for also being interested in him and his abilities. The fact that Luffy is not at all fazed by his appearance, having been treated so poorly by reindeers and humans for much of his life, makes him happy. He has become extremely grateful for the family Luffy has given him and the confidence to interact with people again. He is a determined member of the crew as he always looks to help Luffy in any way he can, from fighting to medical aid. Although he is not as brave as Zoro, he is not as cowardly as Usopp either, having shown he is a capable fighter despite his bounty only being 100. His former teacher, Dr. Hiriluk, first introduced him to what a pirate is, with Hiriluk leaving a strong, positive, impression on Chopper on the ideal pirate, and has come to see Luffy as the personification of the pirate Dr. Hiriluk was talking about. Chopper has become a faithful admirer of Luffy and is constantly astounded by his impressive feats, especially when he goes beyond his human limitations, however, the excessiveness of how far Luffy pushes himself can irritate Chopper as a doctor. He was stunned when he found out that Luffy had developed an extremely strong immunity to most poisons. He inquired to Luffy if he defeated Charlotte Katakuri and was amazed when he replied that he had. After receiving Luffy's message to wait two years, Chopper resolved to become a "monster" so he can become stronger for Luffy's sake. Like the other members of the crew, Chopper firmly believes that Luffy will become the Pirate King and reassures a sobbing Mocha that Luffy will defeat Caesar Clown because of this.
Luffy is very friendly with Chopper and acts as an older brother of sorts. He does not patronize him for being the youngest member of the crew and treats him on an equal footing with everybody else. He often gets caught up in a lot of fun with Chopper as they mess around on the ship quite a lot. He has complete faith in Chopper’s abilities as a medic and was willing to allow the children on Punk Hazard to suffer from their withdrawal symptoms on Chopper’s orders, trusting his doctor. Luffy has full trust in his abilities as a fighter and is never too worried about his well-being, he is also willing to listen to Chopper from time to time about his health. Some of the other crew members have concerns about how much of an impression Luffy has on the young Chopper, not wanting him to lose his innocence.
As a comedic gag, Chopper will jump into the water to try and save Luffy whenever he is drowning, having forgotten he is also a Devil Fruit user and cannot swim. Luffy has sometimes contemplated eating Chopper whenever he has gotten extremely hungry such as on their way to Totto Land. Chopper has copied Luffy's party trick of sticking two chopsticks up his nose and into the bottom of his mouth. Since the time skip, Chopper has become more prone in beating up Luffy whenever he says or does something ridiculous. He is just as amazed as Luffy whenever he finds something interesting and cool, such as Sanji's raid suit, and was also fooled, just like Luffy, by Usopp's alter-ego, Sogeking. Both Luffy and Chopper possess the ability to understand animals, Luffy because he possesses the ability to hear the "Voice of All Things" and Chopper because he is half reindeer, although this ability is much more inconsistent for Luffy. They ate an entire cafe on Cacao Island as they both have a strong sweet tooth.
A former agent of Baroque Works, and Crocodile's right-hand woman, Nico Robin became the sixth member to join Luffy's crew and the second Devil Fruit user. Out of all his crew members, Robin is the one he shares a complete wholesome relationship with as the two get on extremely well and have yet to be seen arguing. After she rejoined the Straw Hats, following the Enies Lobby Arc, she has continued being a reliable and devoted friend to Luffy. She is the archaeologist of the Straw Hats and deciphers the Poneglyphs for them.
Luffy and Robin briefly met for the first time as he and his crew sailed out of Whiskey Peak where she boarded his ship, temporarily took his hat, offered some advice for their next location, and left. Luffy was very mixed on how to view her as she seemed friendly but still worked for the enemy, ultimately, he chooses to distrust her and destroyed the log pose she had given him. They met again when Robin saved Luffy after his first fight with Crocodile and made it apparent she has an interest in him because he carries the initial, "D.", in his name. Later, she saved Luffy's life again by providing the antidote for the poison Luffy had been afflicted with by Crocodile after his victory against him. When Luffy woke up, he chose to save her from the collapsing underground grave despite her protests. She then turned up on the Going Merry as the Straw Hats sailed away from Alabasta and argued that Luffy had forced her to live and thus should take responsibility by letting her join his crew, with Luffy accepting this proposal without hesitation, shocking everyone with the exception of Sanji.
The two get on extremely well with each other. Their interactions can be somewhat infrequent compared to the rest of the Straw Hats, but when they do interact it is always positive. They both deeply care for each other and respect one another’s abilities. Robin's relationship with Luffy can best be described as motherly, as she has been seen feeding Luffy some of her food and, out of all the crew members, is by far the most patient and calm with him. She is not at all irritated by his stupidity, recklessness, or carelessness, unlike the rest of the crew, and in fact, seems to admire these qualities. She tends to smile, and sometimes laugh, at Luffy's antics, which was first seen back on Alabasta when Luffy decided to drink a full barrel of water in order to take on Crocodile, causing her to chuckle at his bizarre improvisation. She also has a keen interest in Luffy since they first met, taking a liking to the Straw Hat captain's bold and upfront personality. This interest in her captain has been prevalent since she first met him and whilst talking to Gan Fall on Skypiea she acknowledged his comment on Luffy's strange aurora that reminds him of Gol D. Roger, telling him that Luffy is a very interesting person. Although this interest was an initial motive behind her decision to join his crew, she has come to see Luffy as a genuinely close friend.
She is very grateful to Luffy for having saved her life, twice. Due to her past, where she lost her family and friends and became an orphaned child hunted by the World Government, she struggled to find a place she could call home until she met Luffy. Whilst thinking of her past, she remembered her friend, Jaguar D. Saul, tell her that one day she will find people that will risk everything for her sake and came to the conclusion that Luffy and his crew are the friends she has been longing for. It was Luffy who convinced her to keep living even if the world does not want her to, with these words having a great impact on her. She no longer felt lonely by the fact that she was chased by the World Government as Luffy pointed out to her that he and his crew are also enemies of the world. Slowly, but surely, she became more comfortable with Luffy and his crew and began to open up, bonding with Luffy and growing to respect him as her captain and, more importantly, her friend. Her friendship with Luffy developed to such a point that, following the Battle of Marineford, she was shown to be greatly relieved that Luffy was well before receiving his message to wait two years. After reflecting on all the things Luffy has done for her, she decided to try and become stronger for his sake. Whilst blushing, she noted that the idea of doing such a thing would never have occurred to her before.
Similar to Zoro, she is completely accepting of Luffy's decisions as captain and does not hesitate in any situation she is put into by his reckless adventuring. She is often among the first people to follow Luffy into battle and is fully prepared to take on whoever is put in her way for the sake of helping him. She was the one to save Luffy after his fight against Rob Lucci by using her Devil Fruit abilities to carry him onto the Going Merry. Whilst on Sabaody Archipelago, she saved an exhausted Luffy from being attacked by a Pacifista and a monster Chopper by carrying him under her arms. Due to being very accepting of Luffy's decisions, she rarely offers up advice but has occasionally done so, such as when, after Luffy had formed an alliance with Trafalgar Law, she warned him that, although she is happy to go along with him, alliances are often marred by betrayals and that he should be certain he can trust Law. After discovering Sanji's situation, Robin advised Luffy again by warning him about the strength of Big Mom when he proposed trying to get Sanji back, which prompted Luffy to decide to try and sneak into the Yonko's territory instead. She also has a fundamental understanding of how Luffy's mind works and has come to be one of the very few people who is capable of helping Luffy understand information or scenarios that are originally too complex for him. She clarified to Luffy the situation between Smoker and Tashigi when he was fighting them both on Punk Hazard, and when Luffy could not remember who Marco was, despite everyone telling him he had met the Whitebeard Pirates' First Division Commander at the Battle of Marineford, Robin was able to jog his memory by simply telling him he is the person who looks like a pineapple.
Luffy cares for Robin immensely and does not tolerate anyone hurting or taking her away. He has faith in her abilities as a fighter and trusts her whenever she goes out on her own to complete tasks. On Skypiea, he was furious when he found a heavily wounded Robin after she fought Enel and held onto her as she explained that Nami had been taken away by him. During his encounter with the Admiral, Aokiji, he became furious when he threatened to take Robin away. When he proceeded to turn her into ice and tried to smash her, Luffy was just about able to save her. He was upset and angry after being told that Robin had been taken against her will by CP9 in order to keep him, and the rest of the crew, safe and promised Nami to rescue her. Such was his anger, he charged headfirst into Enies Lobby on his own, fighting through a thousand Marines and two CP9 agents, including their strongest fighter, Lucci, just to reach her. He was more than willing to burn the flag of the World Government to show Robin his complete disregard for them and his willingness to take on the world for her sake. This act of rebellion shocked Robin and caused her to cry at how far Luffy was willing to go just to save her. Luffy then passionately demanded her to say she wants to live and when Robin responded by saying she does, and begged him to take her out to sea with him and his crew, he became even more determined to save her. After his victory over Lucci, he called out to Robin and told her that they will all leave Enies Lobby together, causing her to cry. When on Sabaody, Luffy tried to reach out and save Robin from Bartholomew Kuma but failed to do so, with her being the final crew member he lost to the Shichibukai before being sent away himself.
Robin's faith in Luffy is absolute, like most of the crew, and she is often impressed by the actions of her captain. Whilst on Skypiea, she played a key role in convincing Wyper, a hostile Shandia warrior, to aid Luffy by informing him of the reason why he wants to ring the famous Shandorian Bell and expressed admiration for her captain's determination. Following the time-skip, she was impressed by the improvements Luffy had made and was astonished when he used Haoshoku Haki to knock out 50,000 of Hody Jones's crew. Although, for the first time since she met him, she expressed genuine horror over Luffy's actions when news that he had been captured by the Yonko, Kaido, reached her. Robin has also implied that she is willing to give up her own life for Luffy, as when Bartolomeo admitted he was willing to die for Luffy's sake, Robin acknowledged his feelings, telling him that Luffy is the kind of man worth dying for and that he is the trump card that brings their crew victory. She showed her faith in Luffy whilst being escorted by Spandam and Lucci, as she became elated when he had finally caught up to her and could not help but smile when she heard his voice call out her name. When Nekomamushi warned her that a person of her abilities, to read poneglyphs, is rare and that a lot of people would try to kidnap her, she simply responded that she has faith in her captain and crew to not allow such a thing to happen because they are strong, causing Luffy to comically blush over the compliment and state he would fight anyone for her.
Robin often takes on some of Luffy's habits such as repeating nicknames he has assigned to people, an example of this is seen when Robin referred to Bartolomeo as "Birdy-kun" whilst on Dressrosa after Luffy had referred to him as "Parrot Hair". Due to her knowledge of world affairs, she was greatly surprised, and intrigued, upon discovering that Monkey D. Garp is Luffy's grandfather and Monkey D. Dragon is his father. She was further surprised to hear that he has connections with the Yonko, Red-Haired Shanks, and asked Nami for clarification whilst finding Luffy all the more interesting. Out of all the Straw Hats, including Luffy himself, Robin is the only one who has met Luffy's father, Dragon, doing so during the time skip. Luffy has shown he is well aware of how intelligent Robin is, such as when he complimented her to Iceburg, and will often turn to her whenever he wants to know information about certain individuals, including his own father. Robin is also the only member of the crew to have worn Luffy's straw hat without his permission when she took it off him when they first met, which irritated Luffy.
Franky is the former head of the Franky Family, the seventh person to join the Straw Hats, and is the shipwright for the crew. He is responsible for building the Straw Hats' new ship, the Thousand Sunny, just before he joined them. He and Luffy share a great bond and get on extremely well, he acts as a sort of older brother to his captain and enjoys entertaining him with his various inventions and robotic body. He has tremendous trust in Luffy's abilities and his role as captain and holds great admiration for him. Luffy likes Franky a lot and finds him to be an amusing and entertaining guy. He has complete faith in him as a shipwright and as a fighter.
The two first met on Water 7 and got off to a bad start as he and his family had just beaten up, and robbed, Usopp. This seriously angered Luffy and led to the Straw Hat captain, as well as Zoro, Chopper, and Sanji, beating up the Franky Family and destroying the Franky House. This, in turn, led to Franky wanting revenge for his family and attacking Luffy in broad daylight whilst he was with Nami. Their fight was soon interrupted and Luffy fled, leaving Franky behind. Franky was later attacked by CP9 whilst with Usopp and the two were taken hostage by them, along with Robin. He ends up becoming an ally to the Straw Hats to defeat CP9 and save their crew member. After successfully doing so he received his first bounty for his role and was convinced to join the Straw Hats as their official shipwright after building them the Thousand Sunny from the Adam Wood he had bought with the money he had stolen from Usopp.
Throughout the Enies Lobby Arc, Franky came to respect, and understand, Luffy and was amazed by his strength and determination to save his crew. He even wished to aid Luffy directly in his fight with Rob Lucci but agreed to try and save Robin for him instead. When he discovered Luffy's family ties he was stunned at how notorious they all are and commented that it partly explains how he is so strong. He wished to join the Straw Hats but was conflicted with his wish to remain on Water 7 due to still being guilt-stricken about his mentor's death. After Robin and Iceburg were able to convince him to move on, he agreed to join Luffy's crew. He grew to admire Luffy further and chose him and his crew to fulfill his dream of having a ship that he built from the legendary Adam Wood to be sailed all around the world, believing them to be worthy. After being separated by Bartholomew Kuma on Sabaody Archipelago, and receiving Luffy's message to wait two years, he chose to spend his time modifying his robotic body in order to become more useful, and more capable, for his captain.
Luffy has a great amount of trust and respect for Franky, he completely accepts his knowledge as a shipwright and mechanic, and although he rarely understands what he is talking about, he trusts him anyway. He also acknowledges Franky as a capable fighter, happy to have him by his side in a fight and has faith in Franky completing individual missions, such as recovering the Thousand Sunny whilst on Punk Hazard and aiding the Tontatta Kingdom. Such is Luffy's trust in him, he was willing to let Franky eat his late brother's Devil Fruit, the Mera Mera no Mi, despite not wanting anyone else to have it. Due to his child-like mentality, he is easily amazed by Franky's cyborg modifications, something Franky happily indulges him in, and is left dumbfounded by some of the weapons and constructions he makes, especially General Franky. He believes Franky epitomizes a boy’s dream.
Franky shares a similar outgoing personality like Luffy, but without the stupidity, which helps them to get along. Due to Franky's emotional sensitivities he has sometimes cried profusely with, or for, Luffy. He is very laid back with his captain and finds him funny and endearing. He still respects his authority, though, and asked for his permission to aid the dwarfs whilst on Dressrosa and was overjoyed to hear Luffy approving his request. He refused Luffy's offer to eat the Mera Mera no Mi as he did not wish to give up the ability to swim but encouraged Luffy to go and retrieve his deceased brother’s Devil Fruit, despite being aware that it is probably a trap, telling his captain to not let this chance slip away as he will regret it. Despite having gotten used to Luffy's reckless nature, he was left in complete horror after discovering he had been captured by the Yonko, Kaido.
Brook is the former musician and acting captain of the Rumbar Pirates and is the eighth person to join the Straw Hats, the third Devil Fruit user, and is the oldest member of the crew. He is one of Luffy's most committed crew members and is very loyal to him. The two get on extremely well because of their similar upbeat and eccentric personalities. Their relationship is defined by their identical childish nature, with Brook being continuously excited and bubbly, finding the joy in most situations, just like his captain. Luffy adores Brook because he is a musician and a skeleton. Brook will often play songs for him and his crew, from a piano, violin, or guitar.
Luffy met Brook as they traveled through the Florian Triangle, sailing past the skeleton's ship with the Straw Hats spotting him and immediately becoming frightened because of his appearance, apart from Luffy who was intrigued. He boarded Brook’s ship and immediately asked him to join his crew, annoying his crewmates. Brook accepted and went to their ship where he explained his past, and current, situation. He ultimately declined Luffy's offer to join his crew as he could not leave the Florian Triangle without his shadow that had been taken by Gecko Moria, however, Luffy resolved to get Brook’s shadow back so he could join. Having succeeded in defeating Gecko Moria, with the aid of Brook, and returning his shadow, Brook was still somewhat hesitant to join Luffy's crew as he had a commitment to a whale he and his crew met, and befriended, called Laboon, and wished to know if he is still alive. Luffy and his crew also met Laboon when they first entered the Grand Line and Luffy happily informed him of Laboon's well-being, causing him to cry and then join Luffy's crew. Brook revealed his wanted poster and pledged his loyalty to the Straw Hat captain.
Their relationship is immensely positive and they get on very well with each other. They also respect each other’s positions, with Luffy being the captain and Brook being the musician and the second swordsman of the crew, after Zoro. They both acknowledge each other’s capabilities as Brook always believes that Luffy will win his fights and Luffy trusts Brook to handle the situations he finds himself in. His trust in Brook is so high that he allows him to join Pedro in recovering the Road Poneglyph that is in Big Mom's possession, an extremely important task that is fundamental to finding Laugh Tale, where One Piece is allegedly located. The two also share a sense of relatability over their friendship with Laboon.
Brook is extremely grateful for Luffy welcoming him into the Straw Hats due to having spent the last fifty years alone and has experienced extreme isolation and depression from losing all of his friends. Luffy was able to end that misery by giving him a family to call his own among the Straw Hats. Just the offer of joining his crew brought Brook a lot of happiness because he has been alone for so long. It is because of this that Brook’s loyalty to Luffy is extremely high and prefers to only take orders from him, as he initially declined Momonosuke's request to provide entertainment, stating he only takes orders from his captain. After the two year time-skip he was in tears after having reunited with Luffy, stating that he had missed him so much. Brook gave up his life as a rock-star in order to return to Luffy and the crew. He tends to join Luffy, alongside Usopp and Chopper, in immature antics and will often indulge and encourage some of Luffy's childlike behavior. He is a firm believer that Luffy will become Pirate King and proudly stated so whilst being held up by the Marines on Sabaody Archipelago during one of his concerts, he revealed to his fans that Luffy is actually alive and will one day rule the seas before leaving the stage after a final song. During his fight with Zeo, he once again states that Luffy will become the Pirate King. Whilst fighting Big Mom he praised his captain highly to her, informing the Yonko that there isn’t a wall that Luffy cannot break through in the pursuit of his ambitions.
Luffy likes Brook a lot and respects him as a swordsman of the Straw Hats. Unlike the rest of the crew, he was immediately friendly with Brook and enjoys his company immensely. Luffy is greatly intrigued by him being a skeleton and enjoys his humor, especially the Skull Jokes that he makes. His initial impressions of Brook were so positive that he offered him a place on his crew despite having just met him, finding him hilarious, and chose to help Brook regain his shadow for the purpose of recruiting him. Another huge reason why Luffy likes him so much is that he is a musician, something Luffy has wanted in his crew since the start of his journey and even prioritized getting a musician before a doctor or a cook, and is very fond of Brook’s rendition of Binks' Sake. Brook is also one of the few crew members that can consistently make him laugh.
Jinbe is a former ally of the Big Mom Pirates, the former captain of the Sun Pirates, and a former Shichibukai, who is the ninth person to join the Straw Hats and is their helmsman. Luffy and Jinbe hold each other in the highest regard and share a relationship of mutual respect, with Jinbe acting as a key adviser to Luffy, whilst Luffy acknowledges his wisdom. Jinbe is amazed by Luffy's tenacity, strength, and kind-heartedness, and Luffy is impressed with his talents as a fighter and helmsman. However, Luffy has been frustrated by not having him in his crew on a consistent basis since he joined.
They first met in Impel Down when Luffy infiltrated the Marine base to rescue his brother, Ace, who Jinbe had been imprisoned with. Jinbe convinced Luffy to let him out as he wished to aid him in saving Ace as he considered him a good friend. He proved to be an extremely helpful ally when escaping out of Impel Down and during the Battle of Marineford, where the two grew to respect each other. Having helped Luffy overcome Ace’s death the two parted on very good terms and wished to see each other again. They would meet on Fish-Man Island after two years and worked together to defeat Hody Jones and his crew, the New Fish-Man Pirates. Whilst receiving his blood after his fight, Luffy officially asked Jinbe to join his crew, but he declined due to business he had to attend to first but asked Luffy to make him the offer again when they next meet. They would meet again on Whole Cake Island where he saved Luffy and Nami from being tortured and worked with the Straw Hats to help Sanji escape and assassinate Big Mom. It was during the wedding ceremony that Jinbe officially declared to the Yonko that he will leave the Big Mom Pirates and join the Straw Hats.
The two share a great admiration for each other, as Jinbe came to highly respect Luffy for his reckless rescue effort in Impel Down just for his brother, and his incredible determination on the battlefield at Marineford, showing no fear despite some of the strongest individuals in the world being present. Jinbe possesses the unique ability to talk sense into Luffy and to get him to understand the precarious situation he finds himself in, hoping that the Straw Hat captain will act accordingly. Luffy respects Jinbe's counsel and tries to take in some of his reasoning before he acts. Although this has led the two to get into heated arguments, and at one point, a brief fight, but this was quickly resolved. He is one of Luffy's most powerful crew members and is in the top four strongest fighters, having the second-highest bounty in the crew at 438,000,000. The two have fought alongside each other when they tried to escape Impel Down and proved to be a devastating force.
Jinbe has a high amount of admiration for Luffy and will try to protect and save him whenever he can. During the Battle of Marineford he took on Gecko Moria in order to protect Luffy. Despite his desire for Luffy to not die, he agreed to his request to launch him over the barrier and onto the platform, allowing him to be the first to breach the Marines’ defense, even though Luffy would have to face all three Admirals on his own. His admiration reached a point where he bluntly told Admiral Akainu that he would happily lay down his life to protect Luffy, a monumental statement as Jinbe rarely respects anyone outside of the Whitebeard Pirates. He took a powerful hit from Akainu during his escape whilst carrying Luffy, only to apologize to Luffy for allowing him to get hurt. He almost died because of it, but managed to survive thanks to Trafalgar D. Water Law. Whilst talking to Law he stated how greatly worried he was for Luffy and his well-being once he realizes that Ace is dead. He chose to stay by Luffy's side whilst he recovered on Amazon Lily and was the key to helping him come to terms with Ace’s death, reminding him that he still has people to live for, namely his crew. On Fish-Man Island he offered up his own blood when Luffy had lost a lot of his, despite being a Fish-Man in a country that forbids fish-men sharing blood with humans. He saved both Luffy and Nami from Charlotte Opera and freed them both from captivity. He saved Luffy from Katakuri's attack by throwing tea on the Sweet Commander’s leg which nullified his Devil Fruit abilities. When he announced his decision to leave the Big Mom Pirates he had no fear of the Yonko's wrath, rendering her Devil Fruit powers useless, and proudly stated to her that he has no fear because he is joining the crew of the next Pirate King. He praised Luffy highly to his crew in the immediate aftermath of Pedro's death, recognizing his qualities as captain for not getting caught up in his emotions and instead took Katakuri away to the Mirro-World so his crew could set sail.
Luffy reciprocates the respect Jinbe has for him and talked positively of him to his crewmates, acknowledging him as the reason why he survived the war. His praise for him encouraged Nami to forgive Jinbe for his indirect role in Arlong's oppression of Cocoyashi Village and who had tormented her since childhood. Luffy values Jinbe as his ally and crewmate and appreciated how much he tried to help him during the Battle of Marineford, as well as helping him bounce back from Ace’s death. By the end of the Fish-Man Island arc he gleefully requested Jinbe to join his crew and was extremely disappointed when he declined but made him promise him that once he had completed his unfinished business he would find him again so he could join his crew, with Jinbe promising to do so. He was happy to be reunited with Jinbe on Whole Cake Island and was overjoyed when he announced to Big Mom of his decision to join the Straw Hats. He was extremely happy to have him as part of his crew and trusted him to look after Brook, Carrot, Nami, and Chopper whilst he was away fighting Katakuri. He was very annoyed by Jinbe's decision to not travel with him and his crew to Wano, but understood that he could not leave his former crew behind at the mercy of the Big Mom Pirates. Luffy then reminded Jinbe that he is his captain now, and ordered him to not die and reunite with him in Wano. After escaping Big Mom's territory, the newspaper arrived with reports of the events on Whole Cake Island, Luffy immediately wanted to read it to find out about Jinbe but could not find anything on him. When Jinbe finally arrived on Wano and reunited with the crew Luffy was overjoyed.
Despite his vast experience and affiliations with some of the most notorious pirates, he is still left shocked by Luffy and his actions. He was stunned that he would infiltrate Impel Down for Ace, something that not even Whitebeard attempted. He was frustrated by Luffy's determination to fight Hody Jones despite the repercussions it would have on the relations between fish-men and humans, at one point calling him foolish, and he was further shocked at Luffy's declaration that he does not wish to be a hero. When Luffy defeated Katakuri, out of all the crew members, Jinbe was the most surprised, understanding what Luffy had achieved. He was intrigued when Fleet Admiral Sengoku revealed that Luffy is the son of Monkey D. Dragon, but was not as surprised as a lot of the others.
He is the only crew member so far to have been shown to talk sense into Luffy and have him follow the plans that are best to tackle the situation they are in. The first time was during Impel Down when he convinced Luffy not to waste time fighting Blackbeard as Ace was more important, despite his own desires to attack Blackbeard. He was able to stop Luffy from heading back into Impel Down to try and rescue Bon Clay, explaining that doing so would make his sacrifice count for nothing. Whilst on Fish-Man Island he, despite a tedious process and a brief fight, convinced Luffy to follow his plan on making him a hero to Fish-Man Island, although he had to bribe him with meat. He was able to convince Luffy to work with Capone Bege despite Luffy's strong dislike of him for trying to kill Pekoms, and was able to keep the peace at their meeting. He successfully had Luffy follow the plan to assassinate Big Mom as oppose to Luffy's usual habit of just charging into his fights.
Nefertari Vivi is a princess of the Alabasta Kingdom, a former undercover Baroque Works agent and a former member of the Straw Hat Pirates. She and Luffy are close friends, despite having started off as enemies, and see each other as family. Even though she is often amazed by his stupidity, laid back attitude, and recklessness, she completely trusts him and finds it incredible just how strong he is. Luffy sees Vivi as an extremely kind person and someone he wishes to help. However, he also thinks of her as naive and was reluctant to continue helping her at one point until she understood his reasoning. Nonetheless, he adores her and was filled with crushing disappointment when she did not join his crew.
He first met Vivi during the Reverse Mountain Arc whilst she was undercover as "Miss Wednesday", when she and her partner, Mr. 9, tried to kill Laboon for his meat but failed due to the intervention of Luffy and his crew. She met Luffy again on Whiskey Peak and attempted to fight the Straw Hat Pirates but this comically ended in failure. Once her identity as an undercover agent, as well as her history, were revealed to Luffy and the crew they agreed to help her. She traveled with the Straw Hats to various locations, such as Little Garden and Drum Island, and throughout their adventures grew very close to Luffy. Once they arrived in Alabasta she worked alongside Luffy and his crew to defeat Crocodile and end the uprising against her father, King Nefertari Cobra.
Vivi is often left astounded by Luffy's laid-back attitude and lack of concern for the dangerous situations he finds himself in. This attitude still endears her to him and she was seen occasionally engaging in the crew's banter that tends to revolve around Luffy. She sometimes copies Luffy's antics, such as when he grabbed Usopp by his nose and she started to do the same. She is often worried about Luffy because of how far he pushes himself and felt the need to watch over him from time to time. She was distraught when Luffy was being relentlessly attacked by Mr. 5 whilst on Little Garden. Despite her concerns, she is reassured by the strength Luffy possesses and is left in shock at his raw power, and was relieved when he finally arrived to save her, as well as Nami and Zoro, from Mr 3's candle wax. Although she is tolerant of Luffy's attitude to most things, she does try to counsel him on what it means to lead people, such as when they arrived on Drum Island and she explained to him that he could not convince the local residents to help him by beating them up, despite having shot at her. Nonetheless, she has great respect for him and is eternally grateful for his aid in saving Alabasta. When she was crossing the desert with Luffy she was upset by his statements regarding her wish to prevent conflict from happening in her kingdom and got into a fistfight with him, however, she came to accept Luffy's points and she immediately reconciled. Her bond with Luffy strengthened from this exchange and now has absolute confidence in Luffy and his crew.
She became so close to Luffy and the others that she was almost willing to abandon her life as a princess and continue sailing with them but chose not to do so in the end. Vivi passionately follows the Luffy's adventures and was one of the very few people able to deduce that Luffy had a message for his crew when he rang the Ox Bell following the Battle of Marineford. She was not at all upset when she discovered Nico Robin, a former ally of Crocodile, has joined Luffy's crew, instead choosing to trust his judgement. She becomes friends with both Rebecca and Shirahoshi through their shared admiration of Luffy.
Luffy values Vivi to such a degree that he was willing to help her fight Crocodile and save her kingdom, and got angry at the Shichibukai for the torment he had put Vivi and her kingdom through. He was furious when Crocodile taunted Vivi after they were captured by him. He cares for Vivi a great deal and is very upset when someone tries to harm her, such as when Mr. 5 attempted to do so whilst on Little Garden, and he came to her aid when Crocodile dropped her from the top of the palace plateau, catching her with the aid of Pell, and reassured her that although her voice could not reach everybody that was fighting, her voice reached him and his crew. Luffy is not afraid to criticize her outlook on the world as he got into an argument with her that ended in a fistfight as he tried to get her to understand that she cannot carry the burden of saving her kingdom on her own, and to let him and his crew aid her in defeating Crocodile as that was the best way to save her kingdom. He agreed with Crocodile that her views of stopping the conflict in Alabasta without bloodshed are foolish, but chooses to unwaveringly help her nonetheless. He has praised her, however, and did so after she successfully showed him that pleading for the villagers on Drum Island to help them, when Nami was sick, was a better option than fighting them.
By the end of the Alabasta Saga, Luffy begged her to join his crew. Although Vivi contemplated permanently joining them, she, with a heavy heart, declined due to her responsibilities as a princess. This upset Luffy as he wanted to continue their adventures together. However, he sees her as an honorary member of the Straw Hats and cherishes the time he shared with her as a part of the crew. Before leaving, he and his crew reassured her that they see her as a full-fledged member of the Straw Hats by displaying the cross Vivi had marked on all of them as they sailed away, leaving her in tears of joy.