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Template:Straw Hat Pirates Infobox Throughout the series, there have been people who either traveled with one or all of the Straw Hat Pirates for a short period of time or aided them in one way or another. Many of these individuals would be considered temporary pirates in a way. Along with those individuals, there have also been various groups that have assisted the Straw Hats in their adventures. These groups have helped the Straw Hats either to reach a certain goal or to defeat a common enemy.


Straw Hat-Galley-La-Franky Family Alliance

The Straw Hat-Galley-La-Franky Family Alliance is formed.

An alliance formed on the way to Enies Lobby to rescue Nico Robin and Franky from the World Government, as well as retaliate against CP9 for the assassination attempt on Iceburg. The majority of the help occurred in the courtyard and courthouse in order to help the Straw Hats reach the Tower of Justice and face the CP9 agents, with the Franky Family entrusting the rescue of their leader to the pirates. The allies went their separate ways when the Straw Hats continued their journey with Franky as their new Shipwright, and the Franky Family started working for Iceburg and the Galley-La Company. This alliance is aided by Kokoro, Chimney, Gonbe, Yokozuna, Oimo, Kashi, Iceburg and Usopp under the alias "Sogeking".

Straw Hat-Heart Alliance

The news about the Straw Hat-Heart Alliance are published.

An alliance between the Straw Hat Pirates and the Heart Pirates formed on Punk Hazard by their two captains in order to defeat Kaido, one of the four Yonko of the New World. According to Law, who proposed the alliance, their cooperation would give them a 30% chance to defeat the Yonko. The plan was to destroy Kaido's source of SMILE delivered by Doflamingo, weakening him while letting Doflamingo take on Kaido's anger. However, the events on Dressrosa made Law concerned about Kaido's reaction. This alliance is aided by Kin'emon, Momonosuke, Kanjuro, and an unwilling Caesar Clown, and briefly by the G-5 marines under Vice Admiral Smoker and Captain Tashigi, the kidnapped kids used for Caesar experiments, and Brownbeard on Punk Hazard, and by the Corrida Colosseum fighters including the Straw Hat Grand Fleet members, Elizabello II, Dagama, the Riku Family, the citizens of Dressrosa and Green Bit, a representative of the Revolutionary Army, and Admiral Fujitora on Dressrosa. The alliance eventually would grow to became the "Ninja-Pirate-Mink-Samurai Alliance" on Zou.

Ninja-Pirate-Mink-Samurai Alliance

File:Ninja-Pirate-Mink-Samurai Alliance Infobox.png

The representatives of the Ninja-Pirate-Mink-Samurai Alliance agree to the terms.

An alliance of the Kozuki Family retainers with the Straw Hat-Heart Alliance formed on Zou in response to Momonosuke's request for the pirates to help him avenge his parents against the Beasts Pirates and the shogun of Wano Country and release Wano from their control. The alliance attack is postponed until the Sanji rescue mission from the Big Mom Pirates is completed. Nekomamushi has shown interest in finding and recruiting Marco and the remaining Whitebeard Pirates. This alliance is aided by the entire Mink Tribe, through its leaders, Zunisha, and the Kozuki Family allies and rebels from Wano.

Sanji Retrieval Team-Fire Tank Alliance

Further information: Pirate Alliance#Sanji Retrieval Team-Fire Tank Alliance and Sanji Retrieval Team-Fire Tank Alliance

The Sanji Retrieval Team and the Fire Tank Pirates meet.

An alliance formed between the Sanji Retrieval Team and the Fire Tank Pirates. Both groups agreed to work together during Big Mom's Tea Party, the main event of which will be the wedding ceremony between the Germa Kingdom's third prince (and the Straw Hats' cook), Vinsmoke Sanji, and Big Mom's 35th daughter, Charlotte Pudding. While the two groups share a common opposition to Big Mom, they have slightly different goals: The Straw Hats want to prevent Big Mom's planned assassination of Sanji and his family during the event, while Capone Bege, Captain of the Fire Tank Pirates, wants to use the opportunity to take down Big Mom herself. The alliance was offered by Jinbe after hearing of both wedding day conspiracies from Pekoms, who was targeted by the Fire Tank Pirates, and Brook, who was present when Pudding and Big Mom discussed their plans. The plan, according to Bege, is to use Big Mom's Haki infused reaction to Luffy destroying Mother Caramel's photograph, rending her forces unconscious, and tiring Big Mom herself, weakening her enough for Caesar Clown to use KX Launchers to finish her off, while the Straw Hats rescue Sanji's family, before escaping through the Mirror-World to the safety of the crews ships, ending their alliance. The alliance is supported by Jinbe and his Sun Pirates, who are keeping Pekoms from alerting Big Mom; Sanji, who was reunited with the retrieval team shortly before the crews met; Bege's wife and Big Mom's 22nd daughter, Charlotte Chiffon, who no longer considers herself part of the Charlotte Family nor acknowledges her mother as a parent due to the pain and suffering she put her through; an unwilling Caesar Clown, whose heart is in the possession of Bege; and Big Mom Pirates members Charlotte Brûlée and Diesel, who were held captive by the Straw Hats. The Vinsmoke Family later joined the allied forces as the true intentions of the Big Mom Pirates was revealed to them at the Tea Party, and Brûlée was rescued by her brother.

Allies and Traveling Companions


Among those, there are more notable people:

  • Vivi and Carue, as they traveled with the crew for almost the entire Alabasta Saga, and even considered permanently joining them but due to her promise it seems that she is always welcome back.
  • Jinbe, who was invited to join the crew, but declined due to unfinished business. He promised that once his business is concluded, he will return to the Straw Hats, and join them if they still want him. Even before reuniting on Whole Cake Island, Jinbe states to Aladine that Luffy eventually will be his captain and that he'll die for him even before it is official.
  • Trafalgar D. Water Law, who initially formed an alliance with Luffy on the pretense to take down the Yonko Kaido, but his true goal was to take down Donquixote Doflamingo. After Doflamingo's defeat, Law later joined the Ninja-Pirate-Mink-Samurai Alliance to defeat Kaido. Law has traveled with the Straw Hats since they left Punk Hazard.
Character(s) Arc Involved As Allies Involvement With the Straw Hats
Shanks Romance Dawn Arc The captain of the Red Hair PiratesLuffy's idol. He saved Luffy from the Lord of the Coast but lost his left arm. He's also the one who gave Luffy his signature straw hat.
Coby Romance Dawn Arc Coby traveled briefly with Luffy, acting as a temporary navigator, after he was freed from his servitude to Alvida.[1] He joined the Marines after the incident with Captain Morgan, and later trained under Vice-Admiral Garp, Luffy's grandfather. He still considers Luffy his friend even though they are now on opposite sides of the law.
Rika Romance Dawn Arc A little girl who lives in Shells Town. Gave Zoro some onigiri, explained to Luffy and Coby that Zoro's a good guy.
Gaimon Syrup Village Arc The protector of Island of Rare Animals who befriend the Straw Hats before they arrived to Syrup Village (afterwards in the anime) due to their shared definition of "Treasure".
Kaya and Merry Syrup Village Arc A young girl who lives in the largest mansion in Syrup Village and her butler. After the Straw Hats foiled Kuro's plan to assassinate Kaya and inherit her fortune, they gave the Straw Hats their first ship, the Going Merry, as a reward.
Johnny and Yosaku Baratie Arc to Arlong Park Arc Two oafish but good-hearted bounty hunters who were once Zoro's partners. They traveled with and assisted the Straw Hats from Baratie to Conomi Islands.[2]
Gin Baratie Arc A former enemy, combat commander of the Krieg Pirates , he helped Luffy and Sanji from inhaling Don Krieg's "Deadly Poison Gas Bomb MH5". After Krieg was defeated by Luffy, he hopes to see Luffy again in the Grand Line.
Nojiko and Genzo Arlong Park Arc Two villagers who helped keep Luffy from drowning when he was temporarily submerged in the water of Arlong Park. Nojiko is Nami's adoptive sister, while Genzo is seen as a father-figure by the two sisters.[3]
Nefeltari Vivi and Carue Whiskey Peak Arc to Alabasta Arc The two traveled with and assisted the pirates for almost the entire Alabasta Saga. Vivi being close to them, considered joining them and was even asked to join the group.[4] She however turned down the position in order to take care of her country, Alabasta, with Carue loyally staying with her.[5]
Igaram Whiskey Peak Arc He attempted to draw Baroque Works pursuers away from the Straw Hats and Vivi in Whiskey Peak by setting sail disguising as Vivi with three dummies as Luffy, Zoro, and Nami, but his plan failed.
Dorry and Brogy Little Garden Arc

After the Straw Hats defeated Mr. 3 and his cohorts, and helped the two giants, the two gratefully aided the pirates by destroying the Island Eater that was blocking their path from Little Garden to Alabasta.[6]

Dalton and Kureha Drum Island Arc Former Chief Royal Guard of the Drum Kingdom and the Witch Doctor on Drum Island. Dalton helped the Straw Hats when they were looking for a doctor to cure Nami's sickness and Kureha is the doctor who gave treatments to Nami, Luffy, and Sanji.
Portgas D. Ace Alabasta Arc Luffy's brother who aided the Straw Hats by stopping Smoker from catching Luffy and destroying a fleet of five Billions ships that were pursuing them.[7][8] In the anime, he sort of traveled alongside with them through the Alabastan desert while looking for some answers to Blackbeard's whereabouts.[9] He left the group to continue his search but not before giving Luffy his Vivre Card. While his death surprised and upset the crew, they were most concerned about Luffy's wellbeing after the death of his brother. Nonetheless, Ace had the upmost faith that Luffy was in good hands, and entrusted his safety to them.
Eyelashes Alabasta Arc Eyelashes is a camel who traveled with the Straw Hats after being saved from a Sandora Lizard during the events of Alabasta. He was mainly a transportation for Nami and Vivi, but also helped them in some situations. After the events of Alabasta he was given permission to join the Super Spot-Billed Duck Squad (even though he is a camel).
Pell Alabasta Arc One of the two head guards in the Alabasta kingdom. He tended Luffy's wound from Luffy's first fight with Crocodile, then transported Luffy to Alubarna. He also willingly risked his life when the Straw Hats and Vivi were unable to disarm a bomb in Alubarna in time by carrying it into the sky where it exploded, saving the city and everyone in it.
Nefeltari Cobra Alabasta Arc Vivi's father, and the king of Alabasta. Taken to the Tomb of the Kings by Crocodile he witnessed the Shichibukai's defeat, and marveled at Luffy's strength. He later carried Luffy to reunite with his crew. After Crocodile's plan was stopped by the Straw Hats, and due to the safe return of his daughter, he housed the Straw Hats after the battles, and protected them from the Marines in his palace. He showed his gratitude to the crew, bowing to them.
Bentham (Mr. 2 Bon Kurei) Alabasta Arc, Impel Down Arc Originally an enemy, he aided the Straw Hats by hiding their ship, the Going Merry, when there were Marines searching around Alabasta and by disguising himself and his men as the pirates in order to draw away the Marines pursuing them. Later, after breaking out of his cell and reuniting with Luffy in Impel Down, Bentham fought alongside Luffy to reach Ace . Throughout their reunion, Mr. 2 aided Luffy greatly through the various dangers of the prison, and ultimately aided Luffy and several other prisoners by sacrificing himself in order to open the way to their freedom.
Gan Fall and Pierre Skypiea Arc The former god of Skypiea and his pet bird aided the Straw Hats during their time in Skypiea.
Conis and Pagaya Skypiea Arc A young woman from Skypiea and her father who helped the Straw Hats in battle from the sidelines throughout their time in the sky, despite Enel's will.
Aisa and Wiper Skypiea Arc Two Shandia who were originally hostile to the Straw Hats but later aided them against Enel after getting to know them.
Kokoro, Chimney and Gonbe Water 7 Arc to Post-Enies Lobby Arc Though a non-combatant, Kokoro aided the Straw Hats from crossing through the Aqua Laguna, to escaping from a flooded passage. She later told them about Fishman Island. Chimney and Gonbe were the ones to discover the secret passage to the Gates of Justice and guided Luffy to it.
Yokozuna Enies Lobby Arc and Post-Enies Lobby Arc A giant sumo frog that helped the Straw Hats from fighting against the World Government to helping build their new ship, the Thousand Sunny.
Oimo and Kashi Enies Lobby Arc and Post-Enies Lobby Arc Two Elbaf giants who originally worked for the World Government as gatekeepers. However, after the truth was revealed to them by Usopp, they aided the Straw Hats and their allies in their invasion of Enies Lobby and helped rebuild Water 7 afterwards.
Keimi, Pappug and Hatchan Sabaody Archipelago Arc, Fishman Island Arc A mermaid and starfish rescued from a Sea King. The Straw Hats helped them rescue Hatchan, a former member of the Arlong Pirates and enemy, so that they can reach Fishman Island. They later became their guides on the Sabaody Archipelago so they could get a bubble coating for the Sunny to descend beneath the ocean. Hatchan also promised as soon as he was feeling better and the Straw Hats ship was coated he would guide them to Fishman Island. Two years later however, Hatchan was still recovering from the injuries he sustained while defending the Straw Hats' ship, and so was unable to guide them there. In spite of his injuries, he attempted to dissuade Hody Jones and Vander Decken IX from attacking Ryugu Kingdom. Keimi and Pappug meanwhile acted as tour guides, showing many of the Straw Hats around Fishman Island. Pappug also aided Zoro, Brook and Usopp in escaping imprisonment.
Silvers Rayleigh Sabaody Archipelago Arc, Post-War Arc to Return to Sabaody Arc The legendary first mate of Gol D. Roger who coated the Thousand Sunny for free after the Human Auctioning House incident, and also helped defend the Straw Hat Pirates against Kizaru. He found Luffy at Amazon Lily and, along with Jinbe, the three invaded Marineford so that Luffy could ring the Ox Bell and send his message to his crew. He taught Luffy how to properly use Haki over the course of a year and a half, then assisted in his escape from the Sabaody Archipelago.
Boa Hancock Amazon Lily Arc to Return to Sabaody Arc Leader of the Kuja and the only female Shichibukai and thought to be the most beautiful female pirate in all the seas. Though initially antagonistic due to Luffy discovering the slave-mark tattoo on her back and being a man, she grew to accept and even love him, even assisting him to reach Impel Down to save his brother, Ace. Later, she gave Luffy the keys to Ace's handcuffs and defended Luffy from Smoker and the Pacifista so that he could try to save his brother. She then helped return Luffy to Amazon Lily and gave him safe haven, so he could recover from his wounds from the Battle of Marineford. After his successful recovery and training from Rayleigh during the two year timeskip, she took Luffy back to Sabaody and assisted in his escape to Fishman Island.
Haredas Amazon Lily Arc to Return to Sabaody Arc A weather scientist on Weatheria who found Nami (who was sent there by Bartholomew Kuma) and took her into his home, teaching her about the sky island's weather science. He assisted in the Straw Hat Pirates' escape from the Sabaody Archipelago along with fellow Weatheria scientists by creating rain to ruin the Marines' gunpowder.
Heracles Amazon Lily Arc to Return to Sabaody Arc A warrior trapped in the Boin Archipelago. He protected the hapless Usopp during their time on the island, though attempted to convince him that it was impossible to escape. He taught Usopp about the Pop Greens as part of his training. He later appeared on the Sabaody Archipelago to assist in the Straw Hat Pirates' escape.
Perona Amazon Lily Arc to Return to Sabaody Arc Was formerly one of the Mysterious Four of Thriller Bark, but was sent by Bartholomew Kuma to Kuraigana Island, the same place that Zoro was sent to during the Straw Hats' battle with Kuma. While she was originally antagonistic, having served beneath Gekko Moriah, Perona grudgingly assisted Zoro during his time training with Dracule Mihawk. She later appeared on the Sabaody Archipelago to help Zoro and the other Straw Hats escape. She was also the only reason Zoro didn't get lost on the way back to Shakky's Rip-off Bar.
Buggy and Galdino Impel Down Arc to Marineford Arc Former enemies who joined forces with Luffy during his breakout\rescue from Impel Down. They later travel with him and several fellow inmates to Marineford and took a minor roll in the war.
Emporio Ivankov Impel Down Arc to Return to Sabaody Arc The "Queen" of Kamabakka Kingdom and Newkama Land, and Revolutionary commander. He healed Luffy from the brink of death with his Horu Horu no Mi powers, and then, upon learning that Luffy was the son of Dragon, his leader, he assisted Luffy in breaking free from Impel Down (though it is implied that he only did this to free Ace, since until Luffy told him that they weren't blood related, Ivankov assumed Ace was also Dragon's son). He then protected Luffy during the Battle of Marineford, being the one person as well as Jinbe to fight most by his side. After the war, he boarded a Marine ship along with his Newkama followers and, seeing that Luffy was in good hands with Boa Hancock, left with his people to return to his home. He was also responsible for helping Sanji during his two years of training in Kamabakka Kingdom.
Inazuma Impel Down Arc to during the Timeskip Ivankov's right-hand man in both the Kamabakka Kingdom as well as the Revolutionary Army. He found Luffy and Mr. 2 Bon Kurei on the brink of death, and brought them to Newkama Land. He then fought alongside Luffy and his allies to break free from Impel Down, but was drastically poisoned by Magellan. After recovering, he assisted Luffy in the Battle of Marineford by creating a bridge for him to reach Ace. After the war, he returned to Kamabakka Kingdom with his leader and people.
Crocodile and Daz Bones (Mr. 1) Impel Down Arc to Marineford Arc The former leader of Baroque Works and his right-hand man. After coming across him in Level 6 of Impel Down, Luffy reluctantly freed him after being persuaded by Emporio Ivankov. During the escape, Crocodile set free Mr. 1, who had been caged in Level 4. After the escape, Crocodile made his intention of taking Whitebeard's head clear, upon which he immediately acted on as soon as he arrived in Marineford. During the Battle of Marineford, Crocodile fought on his own side, aligning himself with no one, and Mr. 1 loyally followed suit. During the course of the battle, he fought Luffy's allies, the Whitebeard Pirates, but then helped save Ace and even Luffy himself, claiming that he did it only because he did not want the Marines to have their way. As such, Mr. 1 also helped protect Luffy against Dracule Mihawk. After the battle, Crocodile and Mr. 1 healed their wounds on an island in the Grand Line, deciding to enter the New World.
Jinbe Impel Down Arc to Fishman Island Arc, Whole Cake Island Arc Former captain of the Sun Pirates and former Shichibukai. He pleaded to Luffy to be freed from his cell in Impel Down so that he could help save Ace. Seeing the fishman's sincerity, Luffy freed Jinbe, and together they and their allies broke free from Impel Down. At the Battle of Marineford, Jinbe, upon renouncing his title as a Shichibukai, was one of the two to most assist Luffy during the battle, along with Emporio Ivankov. After Luffy's mind collapsed from Ace's death, Jinbe swore to protect Luffy at any cost, and was almost killed by Akainu, but was saved and healed by Law. After returning to Amazon Lily with Luffy, he managed to shake Luffy out of his depression by making him realize that he still had something precious to hold on to: his crew. He then joined Luffy, along with Silvers Rayleigh, as they invaded Marineford once more so that Luffy could ring the Ox Bell. After returning from Marineford, Jinbe took a last goodbye and told Luffy he wished to meet him in two years in Fishman Island. Jinbe took off with a whale shark. He is next seen waiting for Luffy at Otohime's grave, where he relates the history of Fisher Tiger and Queen Otohime to the Straw Hats. Jinbe then formulated a plan with them to rescue King Neptune and his family from execution, as well as demonstrate to the populace that humans and Fishmen could work together by fighting alongside the crew against the New Fishman Pirates. Following their victory, Luffy asked Jinbe to join his crew. Although his offer was declined, Jinbe asked that Luffy ask him again the next time they met. He decided to leave his crew and his obligation to the Big Mom Pirates in order to join the Straw Hats, however due to Big Mom's rigged penalty roulette, he took his decision back and decided to outright rebel, stating Luffy is his captain, and he is willing to die for him. He later came to the aid of Luffy and Nami when they were imprisoned by Big Mom, and took out Charlotte Opera who was guarding them. He later helped rescuing Brook from Big Mom, and informed the Sanji Retrieval Team about an ongoing plot that put Pekoms in danger. He later offered the Straw Hats to join forces with Capone Bege, the man behind the plot, in order to achieve their goals. During the meeting he was the one who pointed out that despite past frictions between the two groups, their shared hatred is enough to momentarily work together. Later in front of Big Mom, Jinbe declared that he is leaving her crew to join the Straw Hats and toasted a cup of sake to make it official.
Bartholomew Kuma During the Timeskip One of the Shichibukai and an officer of the Revolutionary Army. Shortly before the Battle of Marineford, he made a request to Vegapunk before being fully modified into a Pacifista, to give him a command to protect the ship of the Straw Hat Pirates until one of them returned. Vegapunk complied, and after the war ended, the fully mechanized Kuma returned to the Sabaody Archipelago to protect the Thousand Sunny. Two years later, Franky returned to see a heavily damaged Kuma guarding the ship. Upon seeing Franky, Kuma left the ship, stating that his mission to protect the Thousand Sunny was completed. Later on, Franky informed the rest of the Straw Hat Pirates about what Kuma had done during the timeskip, but stated that now that he had been made into a full Pacifista, he would be a heartless human weapon with no will of his own when they met again.
Dracule Mihawk During the Timeskip One of the Shichibukai. Though antagonistic towards Luffy during the Battle of Marineford, he agreed to train Zoro in swordsmanship during the two-year timeskip.
Surume Fishman Island Arc A fearsome kraken from the depths of the ocean. As the Straw Hats were traveling underwater, they defeated him in order to get through. After going to the Underworld of the Sea, Luffy managed to tame him, and even got him to save the Sunny from Wadatsumi and push the ship all the way to Fishman Island. Although initially frightened into rejoining the New Fishman Pirates, Surume assisted Luffy in the battle at Gyoncorde Plaza when the Straw Hat captain claimed him as a friend. After the fight, he was seen cooperating with the Fishman Island's Ammo Knight, helping to exile Wadatsumi.
Trafalgar D. Water Law Punk Hazard Arc to Zou Arc Law offered a formal alliance with the Straw Hats to Luffy, as a means of dethroning the Yonko, Kaido. The two fought together at Punk Hazard, capturing Caesar Clown and planned to deliver him at Dressrosa. Once there, Law dismissed many opportunities to protect himself by maintaining his partnership with the Straw Hats and at one point sacrificing himself so those aboard the Thousand Sunny could escape from Donquixote Doflamingo. When asked by Doflamingo why Law would go through such lengths to believe in Luffy, he claimed that "D." would cause another storm. Later on, Law told Luffy of his past and revealed that his reason for forming an alliance with Luffy was to take down Doflamingo. After reaching the palace, the two confronted Doflamingo together. Luffy protected a wounded Law during the battle, and when Law was taken to safety, he demanded to stay behind to watch the battle between Luffy and Doflamingo. After Luffy was worn out from using his Gear Fourth, Law watched over him until he regained his strength to fight Doflamingo one last time. At Zou, Law decided to join the alliance with the minks and the retainers of the Kozuki Family to battle against Kaido.
Brownbeard Punk Hazard Arc A former pirate turned centaur servant of Caesar Clown, Brownbeard initially opposed the Straw Hats. However, after discovering his master's true nature, he aided the Straw Hats in the hopes of freeing his men from Caesar's servitude. He largely served as a form of mass transport for the crew, to his chagrin.
Mocha Punk Hazard Arc A girl kidnapped by Caesar Clown, Mocha helped Chopper prevent the other children from eating the drug candies.
Ucy Dressrosa Arc During the Corrida Colosseum, Luffy and the Fighting Bull which he named "Ucy" teamed up. Later, after Usopp defeated Sugar and all the toys turned back into humans, he allied with Luffy again during his rampage for Doflamingo's head.
Sabo Dressrosa Arc Luffy's second brother who everybody thought was dead for 12 years. He reunites with Luffy at the Corrida Colosseum and Luffy is shocked and surprised due to the fact that Sabo is alive and starts crying after meeting him. He also had enough faith in Sabo's fighting skills to leave the finale in the Corrida Colosseum in his hands, allowing Sabo to take the Mera Mera no Mi. Sabo later told Fujitora that should Luffy ever need help, he would be there for him, having refused to ever lose another loved one ever again.
Koala Dressrosa Arc A member of the Revolutionary Army and acquainted with Sabo. She went to Dressrosa with Sabo and Hack in order to stop Doflamingo's weapons trade that has been promoting wars throughout the world. While there she reunited with Robin who she became friends with during those two years and later help the Straw Hats in their battle against the Donquixote Pirates.
Hack Dressrosa Arc Another member of the Revolutionary Army who went to Dressrosa with Sabo and Koala stop Doflamingo's weapons trade that has been promoting wars throughout the world. While there, he was turned into a toy by Sugar, but was turned back to normal after Usopp defeated her. He then assists the Straw Hats in defeating Doflamingo.
Elizabello II and Dagama Dressrosa Arc After Usopp defeated Sugar and all the toys turned back into humans, Elizabello and Dagama joined Luffy's rampage for Doflamingo's head, their primary motivation being to assist King Riku.
Gatz Dressrosa Arc After Luffy was exhausted from using Gear Fourth, Gatz came to his aid with the Corrida Colosseum fighters.
Bellamy Dressrosa Arc Former adversary and main antagonist of Jaya Arc, Bellamy initially belittled Luffy and his dreams, however after his defeat he reconsidered his claims and traveled to Skypiea. After the Timeskip he met a disguised Luffy in the Corrida Colosseum and recognized him immediately but still kept his identity a secret. After he lost the block, Diamante gave him the order to kill Luffy much to his anxiety but he soon discovered Doflamingo had ordered Dellinger to kill him. Betrayed, he went to confront Doflamingo during the Birdcage game and was beaten badly. When Luffy arrived to fight Doflamingo, he spotted a wounded Bellamy and tried to rescue him, claiming that they are friends, but was forced to fight him while he was under Doflamingo's power and later to knock Bellamy out when he gravely regretted his alliance choices. After the battle, he was healed by Law at Luffy's request, and escaped Dressrosa with the Straw Hat Pirates and their allies. After the formation of the Straw Hat Grand Fleet he took a piece of Luffy's Vivre Card but noted that he isn't Luffy's subordinate.
Pedro and Carrot Zou Arc to Whole Cake Island Arc Members of the Mink Tribe and Sanji's retrieval team. As part of the Ninja-Pirate-Mink-Samurai Alliance they joined the Straw Hats in their mission the rescue Sanji from captivity by the hands of the Big Mom Pirates and the Vinsmoke Family. While Pedro asked Nekomamushi's permission to help the Straw Hats and to watch over Pekoms, Carrot snuck aboard the Thousand Sunny and together they traveled with them to Whole Cake Island. Later, Pedro volunteered to steal or copy Big Mom's Road Poneglyph.
Vinsmoke Reiju Whole Cake Island Arc Sanji's elder, and only, sister. During the Sanji Retrieval Team's journey, Luffy was poisoned by consuming the skin of an Armored Stonefish, and was close to death until he was rescued when Reiju used her "Poison Pink" ability to remove the poison. She then thanked them for taking care of Sanji and learned of their objectives, but decided to keep their meeting a secret. After Sanji was beaten by his brothers, she took care of him personally, before their family left for Whole Cake Chateau and encountered Luffy and Nami on the way. Reiju seemed pleased when she saw her brother's friends, and troubled when Sanji attacked Luffy. Later that day, she investigated Charlotte Pudding, only to be surprised and captured by her. After she was taken to the infirmary, she was informed by Sanji about the Charlotte Family's plans, before explaining about their mother's past. Reiju tried to convince Sanji to leave their family, including herself, to die, and to escape with his friends (whom she refers to as "amazing"), but Sanji refused. While Luffy searched for Sanji inside Whole Cake Chateau, Reiju once again helped Luffy by hiding him from the Big Mom Pirates and informing him that Sanji was aware of Pudding's deception. Due to her actions, Luffy is determined to rescue her and the rest of the Vinsmokes from being assassinated, and joined forces with the Fire Tank Pirates to take down Big Mom.
Pound Whole Cake Island Arc One of Big Mom's former husbands, and Lola's and Chiffon's father, Pound met some members of the "Sanji Retrieval Team" in the Seducing Woods and provided them with valuable information on Linlin's powers and weather control abilities. This led to Charlotte Cracker attacking him, only to be stopped by Luffy. He later helped Nami in her fight against Brûlée, before traveling with them to Big Mom's castle in the hope of reuniting with his daughters.
Charlotte Chiffon Whole Cake Island Arc Pound and Big Mom's daughter, Lola's twin sister, and Capone Bege's wife. She strikes up a mutual friendship with Nami for the latter's connection to her sister, and stood up for Luffy when she believed her husband was sending him on a suicide mission during their assassination plan against Big Mom.


Among those, there are more notable groups:

Character(s) Arc Involved As Allies Involvement With the Straw Hats
Red Hair Pirates Romance Dawn Arc A pirate crew led by Shanks, the crew that inspired Luffy to be a pirate. They helped Luffy when he was captured by Higuma.
Usopp Pirates Syrup Village Arc The band of make believe pirates who helped the Straw Hats in stopping Kuro's scheme in their own way despite being only kids.
Baratie's staffs Baratie Arc The staff of the restaurant in the seas, fought alongside Luffy against the Krieg Pirates.
Saruyama Alliance Jaya Arc During the Straw Hats' time on Jaya, the alliance helped them to reach Skypiea. Their boss, Montblanc Cricket, informed them about how to reach the Sky Island through the use of the Knock Up Stream and the South Bird. The rest of the alliance modified the Going Merry into a "flying mode" to better maneuver the force of the current. Later, the Straw Hats repaid the alliance's efforts by ringing the Golden Bell thus clearing the Montblanc family name.
Galley-La Company Water 7 Arc to Post-Enies Lobby Arc The company originally fought against the Straw Hats when they learned that their president, Iceburg, was almost assassinated by Nico Robin. When the truth was finally learned, the three remaining Galley-La foremen decided to join the Straw Hats to fight against CP9.[1] They, together with the Franky Family, formed a fighting force that invaded Enies Lobby and helped the Straw Hats reach their destination. After the Enies Lobby incident, the Galley-La company provided temporary room and board for the pirates while Iceburg and the foremen helped Franky build their new ship.[2]
Franky Family Water 7 Arc to Post-Enies Lobby Arc A gang consisting of the dregs of Water 7 who were originally on opposite sides with the Straw Hats. They later joined forces with the Straw Hats after their boss, Franky, was captured by CP9. Together with the Galley-La foremen, they formed an army that aided the Straw Hats in their invasion of Enies Lobby. After the events in Enies Lobby, the gang gave the Straw Hats the Treasure Tree Adamwood they bought with the money they stole from the pirates. They did this as thanks for rescuing Franky and to provide the materials to replace the ship the pirates lost.
Thriller Bark Victim's Association Thriller Bark Arc A group of Gekko Moriah's victims that include the Rolling Pirates in their ranks. They helped the Straw Hats in their battle against Moriah to reclaim back their shadows and against Bartholomew Kuma to protect Luffy. One of their prominent members, Lola gave them a Vivre Card for her "mama" in the New World after everything was done.
Rosy Life Riders Sabaody Archipelago Arc and Return to Sabaody Arc Initially antagonists of the Straw Hats due to the coincidental connection between leader Duval and the drawing on Sanji 's wanted poster. After Sanji reforms him to a more handsome face, the group becomes allies assisting them on the Sabaody Archipelago, particularly in locating Keimi after her capture by slave traders. They also protected the Thousand Sunny in the two year timeskip when the Straw Hats were training and saved Brook when he was escaping the Marines.
Heart Pirates Sabaody Archipelago Arc, Marineford Arc to Post-War Arc, and Punk Hazard Arc to Zou Arc The crew of fellow Supernova Trafalgar Law, and the only formal alliance the Straw Hats have made so far. Despite being rivals, they fought alongside the Straw Hats and the Kid Pirates after the Tenryūbito incident. After Ace's death, they escorted Luffy and Jinbe out of Marineford and gave them medical treatment. Due to their help, they ware specially allowed by the Kuja tribe to dock on Amazon Lily to finish Luffy's treatment. After meeting the Straw Hats on Punk Hazard, their captain offered Luffy an alliance as a means of dethroning the Yonko, Kaido. Upon meeting on Zou, some of the crew members tried to stop the fight between Luffy, Roddy and Blackback, and later the two crews formally met. together with the Kozuki Family and the Mink Tribe, their alliance with the Straw Hats grew to become the Ninja-Pirate-Mink-Samurai Alliance.
Kuja Pirates Amazon Lily Arc to Return to Sabaody Arc A pirate crew led by Boa Hancock, and composed of members from the all female Kuja Tribe. During the Straw Hats separation, Luffy landed on their territory and after earning their trust, became close friends and allies with the crew until his crew's return.
Kamabakka Kingdom and Newkama Land Impel Down Arc to Post-War Arc As Luffy penetrated deeper into Impel Down in order to save his brother, he came across the hidden prisoners who managed to escape their cells but stay within the walls of the prison, the Newkama. After Luffy was healed from poison, and revealed his heritage, the leader of the Newkama and an ally of Luffy's father, Emporio Ivankov, joined the young pirate in his rescue mission to save Ace, taking the Newkama with him. After the war, Ivankov returned to Momoiro Island, where he discovered Sanji and, with assistance from his "candies", helped train him during the 2 year time-skip.
Impel Down Prisoners Impel Down Arc to Marineford Arc During the escape from Impel Down, Luffy and his allies went about freeing as many prisoners as possible to improve their chances of escaping. Though the majority are mainly loyal to Buggy, they fought alongside Luffy at Impel Down and Marineford, mostly to ensure their own freedom.
Whitebeard Pirates Marineford Arc During the Whitebeard War, Luffy's effort and extraordinary will garnered him respect and admiration from Edward Newgate, his crew and allies, to the point where the legendary pirate ordered his men to assist Luffy. After Whitebeard and Portgas D. Ace were killed, the Whitebeard Pirates then put all their effort toward making sure that Luffy would survive.
Neptune Royal Family Fishman Island Arc After the Straw Hat Pirates and Jinbe rescued the royal family from the clutches of the New Fishman Pirates, they returned the favor by helping the Straw Hats defend Fishman Island. The brothers, Fukaboshi, Ryuboshi and Manboshi helped Luffy fight Hody Jones, while Shirahoshi demonstrated great trust in the captain, placing herself under his protection while being targeted by Vander Decken IX. Neptune also chose to trust the Straw Hats after he saved Megalo, and cleared them of all charges after they saved Fishman Island.
Kozuki Family Punk Hazard Arc to Zou Arc A family from Wano Country that were attacked by the Beasts Pirates led by Kaido and the shogun of Wano. Kozuki Momonosuke, the heir of the family, and three of its retainers fled in search of allies to help them fight back. On their way to Zou they were shipwrecked and separated. Momonosuke and Kin'emon met the Straw Hats and Trafalgar Law on Punk Hazard and traveled with them to Dressrosa and then Zou in order to regroup with their allies, in the meanwhile witnessing their strengths. They grew to trust the pirates with their secrets and requested their help in their goal to defeat Kaido and release Wano from his and the shogun's control, which the Straw Hats accepted.
G-5 Marines Punk Hazard Arc The Straw Hats made a temporary alliance with Smoker and Tashigi's G-5 Marines in an effort to rescue the children kidnapped by Caesar Clown, Vergo and Monet along with escaping the island of Punk Hazard safely.
Tontatta Kingdom Dressrosa Arc Due to Usopp's lies, the whole Tontatta Kingdom joined him to fight Donquixote Doflamingo, and even after he revealed that he'd lied to them, his fight against Trebol and Sugar, which ultimately set the kingdom free, cemented his status as their hero. Leo, while rescuing princess Mansherry, dispatched Jora, one of the members of the Donquixote Pirates, and in the process stopped her from healing other members of the Donquixote Pirates (Lao G, Dellinger, Sugar, Machvise, and several subordinates). Along with most of the Colosseum fighters, Leo and 200 of the Tontatta requested to join Luffy's crew.
Chinjao Family Dressrosa Arc After Luffy restored Chinjao's head and Usopp defeated Sugar and all the toys turned back into humans, Chinjao, Sai and Boo joined Luffy's rampage for Doflamingo's head. The family, Sai in particular, helped dispatch two members of the Donquixote Pirates, Baby 5 and Lao G. Along with most of the Colosseum fighters, Sai requested to join Luffy's crew.
Riku Family Dressrosa Arc The former royal family of Dressrosa who, due to Doflamingo's manipulations, were dethroned. They spent the past decade hiding, working and quietly rebelling against him until the Straw Hats came along. The first to attempt a cooperative relationship against the Donquixote Pirates was Kyros, as the toy Thunder Soldier. He worked with the Straw Hats in the mission to destroy the SMILE Factory. In exchange, the Straw Hats were asked to save the slaves being forced to work in the factory before destroying it. In order to do so, part of the operation included knocking out Sugar, the one responsible for transforming people into toys, so as to revert everyone back to normal. He helped dispatch two of the executives of the Donquixote Pirates, Buffalo and Diamante. The next to join was Viola, the former second princess, who was forced to work as one of Doflamingo's underlings. She was sent to assassinate Sanji, but saved him when she saw the cook's unfaltering faith in her, and her desire to be free of Doflamingo. She informed him of Doflamingo's trap and gave him a map for the Flower Field. She then later helped him avoid the Marines, as well as guide Sanji to the Thousand Sunny. Afterwards, she helped Luffy, Zoro and Kin'emon infiltrate the palace, and later helped in stalling for time for Luffy to defeat Doflamingo. After learning of the truth of her family with Sugar's defeat, the former crown princess, Rebecca, also volunteered to help the Straw Hats, offering to deliver the keys to Trafalgar D. Water Law's Seastone handcuffs. Finally, the previous king, Riku Dold III, though initially hesitant to put his trust in the Straw Hats, especially given his dealings with the Donquixote Pirates, decided to take a leap of faith after hearing they had the approval from the rest of his family. He rallied the citizens behind the Straw Hats, and after Doflamingo's defeat, offered them sanctuary in the castle.
Corrida Colosseum Fighters Dressrosa Arc Though they were released from the Hobi Hobi Curse thanks to the Straw Hat Pirates and their allies, these ungrateful combatants quickly turned against the Straw Hats when Doflamingo started his death game. However, after realizing that the Shichibukai was going to kill them all regardless, the Corrida Colosseum fighters united under Gatz, who offered to help Luffy after he was exhausted from using Gear Fourth. Many of them later requested to join Luffy's crew.
Dressrosa Citizens Dressrosa Arc The citizens of the island that remained conscious through Doflamingo's deadly game with the Birdcage witnessed Luffy's defeat of the tyrannical Shichibukai, and considered him their hero. They assisted Luffy, his crew, and his allies three days after the battle by swarming the harbor where they were attempting to make their escape, yelling out that they'd attack him for kidnapping Rebecca but knowing the truth of the situation, and in reality making certain that Fujitora could not drop the island's worth of rubble that he had gathered to kill the crew.
Straw Hat Grand Fleet Dressrosa Arc Consisting of 5,640 men from the 7 divisions led by the Corrida Colosseum fighters and the Tontatta army. After the defeat of the Donquixote Pirates, and escaping the Marines on Dressrosa, the 7 leaders asked Luffy to exchange sake cups with them as an agreement to serve under his wing. Luffy refused and claimed that he didn't want power but freedom, friendship, and free choice instead. Accepting his offer, they decided freely to drink and pledged their allegiance to him despite his refusal.
Mink Tribe Zou Arc A race of humanoid animals inhabiting Zou, an island located on Zunisha's back. While the Straw Hats were divided during the Dressrosa Arc, a group consisting of Sanji, Nami, Chopper and Brook along with Momonosuke and Caeser Clown headed to Zou where they helped the tribe fight off Jack's remaining forces who were attacking the Mokomo Dukedom citizen and cleared up the gas. When the rest of the Straw Hat Pirates and their company arrived at Zou, they were welcomed with open arms and referred to as the tribe's benefactors.  Currently in an alliance with the Straw Hat Pirates to help the Kozuki Family reclaim Wano from the current shogun and the Beast Pirates.
Fire Tank Pirates Whole Cake Island Arc A mafia-themed pirate crew from West Blue, led by Capone Bege, a fellow member of the Worst Generation. They joined forces with the Sanji Retrieval Team in order to take down the Yonko Big Mom during one of her Tea Parties. While Bege is planning on killing Big Mom, Luffy wants to save his friend and his family from being assassinated by her. The two agreed to Jinbe's offer of joining forces due to their shared hatred toward the Yonko, and the short window of opportunity.
Sun Pirates Whole Cake Island Arc Following their Captain, Jinbe, the Sun Pirates prevented Pekoms from informing Big Mom about Bege's plot and subsequently, the Retrieval Team-Fire Tank Alliance, thus assisting their plan.
Vinsmoke Family Whole Cake Island Arc The male members of the Vinsmoke Family were originally antagonistic towards the Straw Hat Pirates. After the Big Mom Pirates revealed their treachery, the Straw Hats, at Sanji's request, saved them from Big Mom's clutches before giving them earplugs and returning their raid suits. In response, they rescued the Straw Hats who became restrained by members of the Charlotte Family, before joining forces with the Straw Hat Pirates and the Fire Tank Pirates.

Anime Only

Character(s) Arc or Movie Involved As Allies Involvement With the Straw Hats
Akisu and Borodo Clockwork Island Adventure A duo of con artists calling themselves "Thief Brothers". They joined forces with the Straw Hats to retrieve their ship from the Trump Siblings in order to continue on their travels.
Apis and Ryu Warship Island Arc A girl that the Straw Hats aided in her efforts to help the Sennenryu she had found and befriended.
Adelle Bascùd and Shuraiya Bascùd Dead End Adventure A brother and sister from Elena that were separated after Gasparde's attack. The siblings reunited after the Dead End Race ended, and Gasparde's defeat, thanks to the Straw Hats' efforts against him.
Phoenix Pirates Ice Hunter Arc A crew of pirates that aided the Straw Hats against the bounty hunter Accino Family.
Billy One Piece Film: Strong World A giant bird who Luffy and Nami took a liking to. He helped the latter escape from Shiki's base, and assisted Luffy in his battle against Shiki.
Panz Fry and Lily Enstomach Z's Ambition Arc A father and daughter who the Straw Hat Pirates helped escape from the Marines and Neo Marines.
Kuzan One Piece Film: Z Though a canon character, Kuzan aided the Straw Hats non-canonically in One Piece Film: Z. He provided them with valuable information about Z's plans and whereabouts, saved Luffy, Zoro, Sanji and Usopp from Secon Island's destruction, and gave the crew an Eternal Pose leading to Piriodo.
Z One Piece Film: Z At the end of the One Piece Film: Z, Zephyr chose to sacrifice himself to let the Straw Hat Pirates and his comrades Ain and Binz escape Kizaru's blitz on Piriodo.
Sea Animal Pirates Caesar Retrieval Arc A group of sea animals led by one of the Kung-Fu Dugong that Luffy beat in Alabasta that consist of an only animal crew. While traveling in the Grand Line they ware captured by Breed and was enslaved by his power until he was defeated by Luffy and Law.
Foxy Pirates Adventure of Nebulandia Usually adversaries, the Foxy Pirates briefly allied themselves with the Straw Hats to rescue their captive friends from Komei and the marines and in the search of the Rebound Mushroom. After returning to Mushroom Island, Foxy declared the two teams rivals once more.
Kinoconda Adventure of Nebulandia After escaping the marine ambush on Mushroom Island , Chopper, Brook and Chuchun hit Kinoconda and after a brief chase, he stumbled upon one of the marines' huge bear traps. After getting treatment from Chopper, it was discovered that the Rebound Mushroom grew on his neck. He later gave Chopper, Brook and several Foxy Pirates a ride to Nebulandia to help the rescue operation.
Desire Silver Mine Arc Childhood friend of Bartolomeo, and former member of the Silver Pirate Alliance, she chased after Luffy and Bartolomeo and was trapped in the silver mine with them, where she learned of her boss's actions and worked with the two in order to escape. After Bill's defeat, she thanked Luffy, and was even offered a chance to join Barto Club with the rest of her crew. Desire, however, refused the invite claiming she wanted to pursue her own dreams, and not Luffy's.
Myskina Olga, Myskina Acier, Elizabeth, and Chavez Heart of Gold The survivors of Alchemi, an island that disappeared over 200 years ago, and their pets. Olga and Elizabeth met the Straw Hat Pirates during their escape from Mad Treasure and told them the story of Pure Gold. Enchanted by the adventure, the Straw Hats decided to follow Olga's orders and travel into Bonbori. While separated inside the giant fish, Luffy met Olga's father, Acier, and together they tamed Chavez and went to save the captive crew and daughter. While being captive by Treasure's crew, Olga helped the crew pass the first trap on their way to find Pure Gold, and Acier helped Luffy see through Psycho P's power. After reuniting and defeating Treasure and his crew, the four joined the Straw Hats escaping from Bonbori. They later separated from the crew, after Tony Tony Chopper healed Olga's disease.
Carina One Piece Film: Gold A former thief, who had a friendly rivalry with Nami, turned performer on Gran Tesoro and a close ally of Gild Tesoro and his executives. When the Straw Hat Pirates arrived to the entertainment ship they ware targeted by Tesoro, earned a massive debt, and Zoro was imprisoned. Carina used their predicament in order to offer them an alliance in order to steal from Tesoro the amount they needed and freed the swordsmen. She escorted the majority of the crew (minus Luffy and Franky) through Tesoro's security, and while they seemed to achieve their goal, Tesoro reveal that her plan was a ruse and part of his show. However, Carina was revealed to be a triple agent, and told the Straw Hats the truth in order to negate Tesoro's powers and fulfill her own goal of stealing the Gran Tesoro for herself.
Raise Max One Piece Film: Gold A member of the Revolutionary Army and a world renowned gambler who was imprisoned on the Gran Tesoro and lost his gambling spirit. When Luffy and Franky was thrown into the prison as well, Luffy's actions and Franky's words moved him to gamble one more time, this time on Luffy in his fight against Gild Tesoro. Max, along with the rest of the prisoners, helped Luffy and Franky reach the sea water refinery in order to free themselves from Tesoro's powers, and protected Luffy when he was attacked by the Gran Tesoro employees.
Rikka One Piece Film: Gold A slave on the Gran Tesoro, attempting to earn enough to erase his family's debt with his sister Tempo. He gave the Straw Hats some information about the dark side of the Gran Tesoro, and protected Luffy from Spandam's revenge attempt.
Toriko and his allies Crossovers Episode 492, Episode 542, Episode 590 During crossover events, the Straw Hat Pirates teamed up with Toriko and his allies due to various emergencies.
Dragon Team Crossover Cross Epoch, Enel attacks Tokyo Episode, Episode 590 During crossover events, the Straw Hat Pirates teamed up with Son Goku and his allies due to various emergencies.

Game Only

Character(s) Arc or Movie Involved As Allies Involvement With the Straw Hats
Dias Legend of the Rainbow Island A boy who joined the Straw Hat Pirates and assisted them in beating Baroque Works and the game's original enemy crew. He leaves the crew at the end of the game.
Popola Unlimited Adventure A rabbit-like creature who helped the Straw Hat Pirates break the island's seals to defeat the Evil Guardian/Evil Master Beast and return the island to its former state.
Gaburi Unlimited Cruise Parts 1 & 2 A demon-like creature who befriends the Straw Hat Pirates and helps them defeat the Doom Guardian by sacrificing himself. In the second part of the game, he returns to assist them in defeating the Demon of Doom.
Pato Unlimited World Red A pen that belongs to Patrick Redfield who helped the Straw Hats throughout the game and wanted to return to his master.
Yadoya Unlimited World Red A young woman who assisted the Straw Hat Pirates by running the shops and vendors in Trance Town as well as providing the crew with resources and information.


  1. One Piece Manga and Anime - Vol. 1 Chapter 2 and Episode 1, Coby decides to travel with Luffy.
  2. One Piece Manga and Anime - Vol. 5 Chapter 42 and Episode 20, Johnny and Yosaku decide to travel with the crew.
  3. One Piece Manga and Anime - Vol. 10 Chapters 84-89 and Episodes 39-41, Nojiko and Genzo keep Luffy from drowning.
  4. One Piece Manga and Anime - Vol. 23 Chapter 214 and Episode 128, Vivi is asked to join the Straw Hat Pirates.
  5. One Piece Manga and Anime - Vol. 23 Chapter 216 and Episode 129, Vivi declines to join the Straw Hat pirates to look after her country.
  6. One Piece Manga and Anime - Vol. 15 Chapter 129 and Episode 77, Dorry and Brogy help the Straw Hats by defeating the Island Eater.
  7. One Piece Manga and Anime - Vol. 18 Chapter 158 and Episode 94, Ace prevents Smoker from catching Luffy.
  8. One Piece Manga and Anime - Vol. 18 Chapter 159 and Episode 95, Ace destroys five Billions ships.
  9. One Piece Anime - Episodes 96-102, Ace decides to travel with the crew in the Anime.

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