Top 10 Best Captain-First Mate Duos in One Piece




Sai is a member of the Chinjao Family and the 13th leader of the Happo Navy. His brother Boo is the vice-leader of the Happo Navy.
Sai is very attached to his brother, which was seen when Boo was defeated by the Funk Brothers. Because of his Hasshoken training, Sai is not supposed to have a deep attachment to Boo when in battle to prevent him from getting distracted but does have enough pride to avenge any of his fallen comrades, including his brother. Boo also acts as a guide for Sai similar to the relationship between Sai and Chinjao as Boo had to hold back his brother from attacking Luffy.


The Black Cat Pirates is an East Blue pirate crew formerly headed by Kuro.
Kuro had come to the conclusion his crew were nothing but puppets; that pirates were barbarians that stole from people out of greed and nothing more, and that they were buffoons who were nothing without his guidance and direction, and that his skill is wasted helping them to plot. He would willingly sacrifice them all and by the time his plan was ready he had already long decided they should all die. This was proven to be true, as Kuro killed and injured many of his crew members.
Originally, Jango, the former first mate and hypnotist of the crew, was loyal to his captain Kuro, as Jango was willing to take over captaincy of the crew, and return three years to instigate the plan, despite seemingly knowing of his captain’s darker personality. Kuro on the other hand viewed Jango simply as a buffoon like the rest of his crew and thought that he needed to die to preserve the secrecy of his agenda.



Buggy the Star Clown is the captain of the Buggy Pirates. Their current goal is finding Captain John’s legendary treasure.
Mohji the Beast Tamer is the first mate of the Buggy Pirates. He is a pet tamer, usually accompanied by his pet lion Richie. Due to his actions, he can be considered the secondary antagonist of the Orange Town Arc, and a minor antagonist in the Loguetown Arc.



Jinbe is the former captain of the Sun Pirates.
His dream is to fulfull his former captain Fisher Tiger’s dying wish of coexistence and equality between humans and fishman and continues to live his life in the hopes of seeing that dream’s completion.
Aladine became one of Jinbe’s closest friends after becoming the second captain of the Sun Pirates. Like Jinbe, he also understood Fisher Tiger’s will. He is also understanding of Jinbe’s reasons for not stopping Arlong. One of the reasons why Jinbe joined the Shichibukai was to allow Aladine, along with other members of the Sun Pirates who choose to, to return to Fishman Island as a government pardon. In return, Jinbe seems to greatly respect Aladine as he would make him his vice captain at some point in their travels.
In the Whole Cake Island Arc, Aladine and the rest of the Sun Pirates completely supported Jinbe’s decision to join the Straw Hat Pirates as it is clearly something he wants to do.


King the Conflagration is one of the three All-Stars of the Beasts Pirates and Kaidou‘s right-hand man. Born as Alber, he is a member of the nigh-extinct lunarian race from the Red Line, noted for their ability to create fire.
King first met Kaidou over 30 years ago when King was still a boy and both were held captive on Punk Hazard as the World Government’s research subjects. Kaidou eventually set the young lunarian free and took him under his wing as a first recruit for the soon-to-be-founded Beasts Pirates. It was when the two escaped Punk Hazard that Kaidou gave King his current name, in recognition of his power, and declared the boy his right hand. King, on the other hand, was charmed by Kaidou’s strength and self-confidence in being the only one who could change the world, and he ultimately came to believe firmly in Kaidou being the man who will become Pirate King.
Since his recruitment, King has come to enjoy Kaidou’s full trust and, being steadfastly loyal to his Governor-General, is ever ready to execute missions on his behalf.


The Red Hair Pirates are an infamous and powerful pirate crew ruling in the New World, led by their captain, Red-Haired Shanks, who is one of the Yonko.
The Red Hair Pirates are the main influences of both Luffy (Shanks inspired Luffy) and Usopp (wants to become a brave warrior of the sea like his father Yasopp) journeys.
Benn Beckman is the first mate of the crew and the right-hand man of Shanks. He appears to be a lot less fun-loving and a lot more relaxed than the other members of the crew are, acting as the level-headed member. He seems amazed at the actions of his captain, such as panicking when Luffy was taken or getting even more drunk while already hungover when Mihawk brought news of Luffy’s new bounty. He is one of the three members of the crew who always appear with Shanks.


Monkey D. Luffy is the founder and captain of the increasingly infamous and powerful Straw Hat Pirates.
The first crew mate to join the Straw Hat Pirates was Zoro, a bounty hunter who decided to serve under Luffy as a pirate after he saved his life from a dishonorable death at the hands of a corrupt Marine, but vowed if Luffy ever got in the way of his ambition, he will kill him. Later in the series, they have developed a very close bond which is underlined by their tremendous amount of trust and respect for one another, to the point where Zoro is willing to die for Luffy’s dream to become Pirate King and sacrifice his own dream of becoming the world’s greatest swordsman.


The Kid Pirates are an infamous and notable rookie pirate crew introduced during the Sabaody Archipelago Arc led by Eustass Kid.
Both Kid and his first crew mate Killer grew up together, so they share a close bond that goes back to childhood. Kid refers to Killer as his partner and is aware that the latter is sensitive about his own strange laugh, which is why, despite being unaware about Killer having eaten a defective SMILE, he knew something was wrong with his subordinate. This was enough for Kid to attempt a reckless rescue of his friend, which led to his second capture from the Beasts Pirates after managing to escape the first time.
Killer usually acts as the voice of reason for his captain, making sure Kid stays focused and does not lose sight of his goals due to impulsiveness.
We often celebrate Zoro and his dedication, support and loyalty to Luffy but Killer definitely doesn’t get enough credit for being all those things to Kid. It was due to Kid’s life being in danger that Killer ate a defective SMILE fruit and became a subordinate of Kurozumi Orochi. He was also willing to die in the fight against Hawkins in order to save his Captain. He is the ultimate First Mate.


The Whitebeard Pirates were formerly one of the strongest pirate crews in the world, as their late captain, Whitebeard, was the only pirate to have ever been a match for the Pirate King, Gol D. Roger, in a fight.
Whitebeard considered every single member of his crew, as well as his subordinate crews, his “sons”. His strong love for his crew and subordinate crews traced all the way back to before he even had a crew, when he stated that the one thing he wanted more than anything was a family.
Marco had a very strong bond with Whitebeard. So strong was their bond, it seemed very similar to a captain and first mate relationship, much like the one of Gol D. Roger and Silvers Rayleigh. This can be indicated by Marco’s position as 1st division commander. Also, during the Battle of Marineford, Marco stood at Whitebeard’s side almost the entire time in the early stages of the battle. Marco was also the first and only crewmate who rushed to Whitebeard’s aid, after Whitebeard was stabbed by Squard and during his battle with Akainu. Later, Marco attempted to assist his captain in fighting Blackbeard, but was ultimately ordered to stand down. Marco, along with his crewmates, considered Whitebeard their “father” much in the same way the great pirate considered them his “children”.


The Roger Pirates were the pirate crew of the late Pirate King, Gol D. Roger, and were the only crew to ever reach Laugh Tale, the end of the New World in the Grand Line.
Silvers Rayleigh, also known as the “Dark King”, is the former first mate of the crew, known as the “Right Hand of the Pirate King”.
Rayleigh had an incredibly close relationship with Roger, to the point where he was called ‘partner’ by the Pirate King. After the man gave himself to the Marines, Rayleigh was unable to bring himself to directly witness the execution of his closest friend. He toasted a drink to the man with both tears and laughter as the blades passed, and downed a glass as his first act in the Great Age of Piracy, the Age of Dreams.

Oda Revealed the Age of all the Straw Hat Grand Fleet Captains

When Oda and Toriyama made a ONE PIECE x DRAGON BALL one-shot manga together!