Monkey D. Luffy and the Straw Hat Pirates have amassed a sizable amount of allies over the course of thevery long-running manga and anime adaptation. These allies span all over the world of One Piece and include many different species.
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One could make a list of entire groups they have allied with, like the entire Kingdom of Arabasta or the Kingdom of Dressrosa. This list will focus on individuals who have proven to be true allies and would fight to the death alongside Luffy, and not include those who could still have ulterior motives as to why they have shown aid in the past.
Updated by Chad Thesen on June 12, 2025:This list has been updated for the purpose of adding additional entries to give it a more expansive range ofcoverage so that readers. This list covers even more of Luffy’s allies, and even if some of them might not seem useful in a fight on their own, their influences over other characters and even entire nations make them a massive force in the world of One Piece.
15Nefertari Vivi
Princess Of The Kingdom Of Arabasta
What Vivi Has To Offer to Straw Hats?
Vivi is the daughter of Nefertari Cobra and the crowned princess of the Arabasta Kingdom. She is introduced while under the cover as Miss Wednesday. As this alias, she would work alongside Mr. 9 for the criminal organization known as Baroque Works.
While on the island of Whiskey Peak, her real identity would be revealed, and she would begin accompanying Luffy and his crew. She would develop a very deep friendship with the Strawhat Pirates and, as the princess of an entire nation, serves as an extremely powerful ally both politically and for the potential military might.
Is The Reason Luffy Escaped From Impel Down
What Bentham Has To Offer to Straw Hats?
Known to a lot of people by his alias, Bon Clay, Bentham is one of the most loyal and dearest friends of Luffy, who sacrificed themselves not once but twice just so Luffy could get away safely. After their first sacrifice, they were sent to Impel Down, a maximum security prison that goes deep into the ocean.
Here is where he is reunited with Luffy and where their friendship and bonds become stronger than ever before. Both the Manga and ending credits of the film One Piece: Red, have confirmed they are alive and still in Impel Down. A lot of fans were torn up over the fact One Piece: Red became the next film when one of the concepts for the film was going to be a prison break of this character.
13Bartolomeo
Luffy’s Diehard Fan
What BartolomeoHas To Offer To Straw Hats?
Bartolomeo is Luffy’s biggest fan. They idolized both Luffy and his crewmates and even themed his own pirate ship after the Going Merry. However, his ship has a wooden Luffy at the front, and the ship is named the Going Luffy-Senpai.
Senpai is a term that means “Upperclassman” and refers to someone who has more experience than you in that field. Bartolomeo’s Devil Fruit allows them to set up impregnable barriers to protect anyone behind them. They are part of the Straw Hat Fleet, along with many others who pledged their loyalty to Luffy.
12Boa Hancock
Luffy’s Future Wife?
What Boa HancockHas To Offer To Straw Hats?
Boa Hancock is from an island in the middle of the upper Calm Belt called Amazon Lily. She is the leader of the Kuja Tribe that resides on the island, and her skills and strength are noteworthy enough that she was named one of the Seven Warlords of the Sea.
Both she and her sisters were forced into slavery to serve the Celestial Dragons. Here, they received branding marks, and they were made to eat devil fruits. They were freed by The Sun Pirates and able to return to Amazon Lily. Ever since Hancock met Luffy, she fell in love with the Straw Hat Captain, even though he showed zero love interest in the princess. She’s one of those people who boasts incredible powers and can go to any lengths to protect Luffy.
Transforms Into A Sulong When Exposed To Moonlight
What Carrot Has To Offer To Straw Hats?
Carrot is a member of the Mink Tribe and has many abilities known to their kind. One could argue that the entirety of the Mink Tribe could be on this list.
Minks possess astonishing reflexes, strength, and inhuman powers, such as a shocking strike and the ability to transform under the full moon. Carrot has been traveling alongside the Straw Hats in the same way Vivi did, developing an unbreakable bond in the process. She also helpedruin the wedding between Sanji Vinsmoke and Charlotte Pudding.
10Kin ‘emon
One Of The Mightiest Samurai In Wano
What Kin ‘emonHas To Offer To Straw Hats?
Kin ‘emon is a powerful samurai, able to be on equal grounds with 2 of the strongest of minks, Cat Viper and Dogstorm. Kin ‘emon allies himself with Luffy and his crew near the start of the New World Saga to help him find his friends and Momonosuke.
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Luffy would later keep helping him long past this request being fulfilled, going on to find for the liberation of Wano from Kaidou and the ruling shogun. Kin ‘emon is the user of the Garb-Garb fruit, used for making clothing and other garments.
Chief Of Staff Of The Revolutionary Army
What SaboHas To Offer To Straw Hats?
Sabo is the adoptive brother to both Luffy and Portgas D. Ace. They attempted to set sail when they were just a child, and upon being attacked, they were assumed dead. For a long time, Sabo had no recollection of his past but would later reclaim his memories and, seek out his brother Luffy, and eat the fruit of his late brother Ace.
This would lead to Sabo inheriting the powers of the Flame-Flame fruit. They are incredibly powerful fighters and a member of the Revolutionary Army.
8Silvers Rayleigh
First Mate To Gol D. Roger
What RayleighHas To Offer To Straw Hats?
Rayleigh would serve as one of Luffy’s mentors to help his power grow to astronomical new heights. While Luffy would initially meet Rayleigh on the Sabaody Archipelago, it would not be until his time on Amazon Lilly that he would begin training Luffy in how to use his Haki.
Rayleigh served as the right-hand man to the former Pirate King, Gol D. Roger. Upon discovering his connection to Roger, Luffy became ecstatic and wished for him to tell him stories about their time together.
Former Boss Of The Yakuza
What HyogoroHas To Offer To Straw Hats?
Just like with Silvers Rayleigh, Hyogoro acts as a mentor figure for Luffy and instructs Luffy on how he can achieve new levels of power. This comes in the form of a new way to release the Haki within Luffy’s body — known to the residents of Wano as “Ryuo.”
This would allow Luffy to strike an enemy’s body without even touching them — just the thing to inflict damage to an enemy like Kaido, who possesses natural armor in the form of his dragon scales.
6Emporio Ivankov
Founding Member Of The Revolutionary Army
What Emporio IvankovHas To Offer To Straw Hats?
Another member of the Revolutionary Army, and Queen of the Kamabakka Kingdom, is Emporio Ivankov. Luffy meets Ivankov while he is trapped in Impel Down, with Ivankov becoming one of the main characters for the duration of the Arc.
They are a grand master of Newkama Kenpo, a martial art built upon Okama Kenpo — which is used by Bentham. During their first meeting, Luffy is on the verge of death due to a deadly poison. It is thanks to Ivonkov’s Hormone Fruit that Luffy can survive and return to full strength — with a significant cut to his overall life span.
