Jinbe

"Knight of the Sea" Jinbe is the helmsman of the Straw Hat Pirates, being the tenth member of the crew and the ninth to join. He is a whale shark fish-man who served as the second captain of the Sun Pirates after Fisher Tiger, and a former Shichibukai from 11 years ago until the Battle of Marineford two years ago. His dream is to fulfill his former captain Fisher Tiger's dying wish of coexistence and equality between humans and fish-men, and he continues to live his life in the hopes of seeing that dream's completion. His name was first mentioned by Yosaku in the Arlong Park Arc when he was explaining about the Shichibukai, but he was not formally introduced until the Impel Down Arc. He renounced his Shichibukai title at the Battle of Marineford, allying himself with the Whitebeard Pirates. After Whitebeard's death, his crew formed an alliance with Big Mom to protect Fish-Man Island. He befriended Monkey D. Luffy during the Battle of Marineford, and later allied with him and his to prevent the New Fish-Man Pirates' coup d'état against the Neptune Royal Family and the Ryugu Kingdom. Luffy invited him to join the Straw Hats, but Jinbe held it off until he had severed ties with Big Mom. He would later do so during the Whole Cake Island Arc and officially become a Straw Hat member. After staying behind in Totto Land to protect his previous crew from Big Mom's wrath, Jinbe would return to the Straw Hat Pirates during the Wano Country Arc. Jinbe's first bounty was Beli76,000,000. Eventually, his bounty raised to Beli250,000,000. After he resigned from the Shichibukai, his bounty increased to Beli438,000,000. He also is the central character from Solo Journey of Jinbe, Knight of the Sea Cover Page Serial. As the second captain of the Sun Pirates, Jinbe is an extremely powerful pirate as a former Shichibukai, with high authority and respect over his subordinates. It is stated that Jinbe was able to battle Portgas D. Ace on equal terms, despite Ace possessing Logia powers. They both nearly killed each other in a five-day long fight just before Ace was taken in by Whitebeard, and in Impel Down, he and Ace shared a cell on Level 6. His power and influence are so great that him departing from a Yonko's organization would severely diminish their crew's overall strength.

Jinbe boasts considerable interpersonal skills, which he exercises to maintain Fish-Man Island's connections to human organizations. He served as a Shichibukai to improve relations with the World Government, and served under Big Mom after leaving the Shichibukai, being entrusted by Neptune to run errands to her. He was able to quickly convince Monkey D. Luffy, Capone Bege, and Caesar Clown to put aside their hostility with each other and form an alliance due to their mutual hatred towards Big Mom. Jinbe also has a very acute sense of danger, as he refused to spin Big Mom's roulette after sensing murderous malice from the roulette; it is later confirmed by Pedro and Brûlée that the roulette had been rigged to ensure death to anyone who spun it. Even for a fish-man, Jinbe possesses tremendous strength. He is the most powerful fish-man seen thus far, shown when he threw away a giant fish-man with just one kick and defeated a super rookie with one punch. He also appears to be extremely swift, even on dry land, despite his large size. He could intercept an enraged Luffy (in Gear Second mode) and prevent him from further assaulting Blackbeard, and later Akainu, when the latter was about to deal a second life-crippling blow upon the already-injured Ace (who was being held by Luffy) in the latter's last moments. In the anime, when struck by Arlong in the face, he wasn't fazed and easily defeated Arlong not long after fighting. While rescuing Brook from Big Mom, Jinbe was able to swiftly grab Nami and Brook and escape from Prometheus's explosion in an instant. Jinbe is an exceptionally powerful master of Fish-Man Karate, which he can use to knock away many opponents at once and defeat extremely strong enemies. He was a child prodigy, being skilled enough that he became a black belt while he was still a child.

By adulthood, Jinbe's skill in Fish-Man Karate has become so immense that his strikes do not even need to make physical contact with an enemy as the water particles in the air will blow them away after a few seconds of time from the attack's initiation. Another example of his strength and Fish-Man Karate level is that he defeated Minorhinoceros, one of the four Jailer Beasts who are Awakened Zoan Devil Fruit users, with a single uppercut. He was able to easily punch Gecko Moria (a fellow Shichibukai) a few meters away, almost knocking him out. He also knocked out Charlotte Opera, an enormous man larger than himself in one punch. Jinbe is a great strategist. He is an expert in discerning military strategies after witnessing any subtle change in enemy formations, as seen when he quickly guessed that Magellan dispatched the order to the battleships outside Impel Down to flee during the mass breakout, and during the battle in Marineford where he surmises that the Marines were plotting something after Ivankov informs him that the enemy is retreating further into the plaza. Jinbe divulges a cunning way to smuggle Luffy and his crew into Gyoncorde Plaza inside Megalo's stomach while effectively deceiving Hody into believing he and Princess Shirahoshi were captured. This allowed the Straw Hats to steal the World Noble's letter and keys to unlock the chains that bounded the Neptune Family, releasing them from captivity by the New Fish-Man Pirates. Another example is when he persuaded Luffy and the Sanji Retrieval Team into allying with Capone Bege in order to ruin Big Mom's Tea Party after noting they didn't have a plan to act on. 

Among fish-men, Jinbe has shown the unique ability to communicate with fish, even over long distances. The ability to speak with fish is usually unique to merfolks, so Jinbe's ability to do so is considered noteworthy by Crocodile. He summoned a large school of whale sharks to the Calm Belt (which was usually too dangerous, with the Sea Kings infesting it) to assist him in a mass-breakout of Impel Down. He can give the whale sharks precise orders, so they understand and obey him. Due to the Calm Belt being dangerously inhabited by Sea Kings, Jinbe would summon his whale-shark comrades to help him to pass through it, as he did when leaving Amazon Lily. This indicates that the whale sharks are capable of outmaneuvering the Sea Kings, something that the former Shichibukai admits is troublesome for himself. As a fish-man who is very familiar with the sea, Jinbe is a masterful helmsman, as shown when he steered a stolen Marine battleship from Impel Down to Marineford with little to no damage being inflicted on the stolen ship at all. He managed to skillfully steer the Thousand Sunny on his first try and even rode the ship within the 'Green Room' of the gigantic wave homie Big Mom created, using his Tacking skills. Nami described Jinbe's skills as a helmsman as if he were controlling the ship like his own body. Jinbe is an excellent negotiator and is able to calm the tensions that even Nami cannot handle as was seen when the Straw Hats and Bege are having a meeting inside Firetank Pirates hideout that quickly becomes tense. Jinbe is extremely skilled in using Busoshoku Haki, as shown when he hardened his arms to defend himself against some members of the Big Mom Pirates and later against Big Mom's Cognac. In the past, he fought equally against Ace, an extremely powerful Logia user. Kairagi, literally meaning "Plum Blossom Peel"): Jinbe hardens his arms and crosses them in a defensive stance. This was first seen used against Big Mom's Cognac technique, which it briefly managed to hold back but eventually broke. This is called Kairagi Glaze in the Viz Manga. Kairagi is a style of pottery that can resemble shark skin. Jinbe possesses the ability to use Kenbunshoku Haki. He was seen with a silver trident when he was a soldier in the Neptune Army. However, he was never shown using it. Other than that, it was shown that he had a tanto under his belt when he was fighting Ace, but he did not use it.