"Knight of the Sea" Jinbe is the helmsman of the Straw Hat Pirates and one of the Senior Officers of the Straw Hat Grand Fleet. He is the tenth member of the crew and the ninth to join, doing so during the Wano Country Arc.
Jinbe is a whale shark fish-man and a powerful master of Fish-Man Karate. His dream is to fulfill his former captain Fisher Tiger's dying wish of coexistence and equality between humans and fish-men. He was a member of the Sun Pirates, eventually becoming its second captain after the death of their original captain, Tiger. He eventually became one of the Seven Warlords of the Sea, though he resigned during the Summit War of Marineford.[5][9] Vegapunk later cloned Jinbe as one of the Seraphim, S-Shark, to replace the Warlords
Prior to and amidst said war, Jinbe befriended Monkey D. Luffy, and two years later allied with him and his crew to prevent the New Fish-Man Pirates' coup d'état against the Ryugu Kingdom's Neptune Royal Family. Luffy thereafter invited him to join the Straw Hat Pirates, but Jinbe held it off until severing ties with Big Mom during the Whole Cake Island Arc. After staying behind in Totto Land to protect the Sun Pirates from Big Mom's wrath, Jinbe returned to the Straw Hats during the Wano Country Arc, officially announcing his status as a member of the crew.
He first gained a bounty of 76,000,000 due to him being a member of the Sun Pirates. It was later increased to 250,000,000 after Jinbe became the new captain of the Sun Pirates before it was frozen after he joined the Seven Warlords. Upon resigning his position as a Warlord at the Summit War of Marineford, his bounty was reinstated at 438,000,000. Following the Raid on Onigashima, his bounty was increased to 1,100,000,000.
Jinbe is an exceptionally powerful and disciplined master of Fish-Man Karate and Fish-Man Jujutsu with years of battle experience, which he can use to knock away many opponents at once and grapple with powerful enemies several times his size. He was a child prodigy, as he was skilled enough to become a black belt at a young age.
By adulthood, Jinbe's skill in Fish-Man Karate has become so great that his strikes do not need to make physical contact with an enemy as the water particles in the air will blow them away a few seconds after the attack's initiation. Another example of his strength and skill with Fish-Man Karate is that he defeated Minorhinoceros, one of the four Jailer Beasts who are Awakened Zoan Devil Fruit users, with a single uppercut. He easily punched Gecko Moria (a fellow Warlord) a few meters away, almost knocking him out. He also knocked out Charlotte Opera, an enormous man larger than himself, in one punch. Jinbe's mastery of Fish-Man Karate allows him to affect all the water within his vicinity, including the water in a person's body. With this ability, he can harm Luffy despite having a rubber body. He can also secrete water from his body as Hody did after overdosing on Energy Steroids.
Due to his tremendous mastery of Fish-Man Karate, supplemented with his physical prowess, Jinbe can perform sturdy defensive blocks to stop attacks as powerful as the thrusts from a shadow-strengthened Moria, one of his fellow Warlords. When reinforced by Busoshoku Haki, he managed to temporarily defend against the gigantic flaming blade of Big Mom's Cognac and suffered only minor injuries. With a single roundhouse kick, he countered a punch from the Energy Steroid-enhanced Wadatsumi, an enormous fish-man who even surpasses an ancient giant in size, knocking him off his feet and breaking several of his fingers. It should be noted that a few moments before, Wadatsumi had brutally defeated Surume, a massive kraken well-known for its monstrous strength. Using his own Uchimizu, a basic Fish-Man Karate technique, Jinbe could deflect an Energy Steroid-enhanced Hody Jones's Uchimizu, which was powerful enough to destroy multiple large corals and pierce through thick stone over an immense distance with relative ease, proving Jinbe's supreme mastery of Fish-Man Karate when compared to Hody, a fish-man with monstrous strength. Jinbe is also capable of using a hidden technique of Fish-Man Karate: Buraikan. With this attack, Jinbe blasts the opponent’s body with a piercing water shockwave. After Jinbe used this powerful attack, he sent Wadatsumi (who had greatly increased his size) flying into the air. He also used Buraikan to send Big Mom off the Thousand Sunny with tremendous force. This was an impressive feat as Jinbe was the first person seen to knock her down, although she was heavily weakened from her tremendous metabolism and eight-hour-long craving at the time.
He also displays the ability to skillfully manipulate water (or any other liquid, like tea or juice) as if it were a tangible cloth through Fish-Man Jujutsu, even using it to attack from a distance. Jinbe demonstrated this ability by splashing seawater on Gecko Moria's zombies even though he was standing on a battlefield covered in solid ice. He can cause devastating damage with this kind of technique to both people and ships, and even managed to flood all of Onigashima with the water provided by Raizo. With this martial art, Jinbei can also perform advanced grappling techniques that allow him to use an opponent's size and weight against them, hurling them into the floor with great force. This allowed him to repel the likes of Big Mom and Who's-Who, the latter of which had assumed his hybrid form and reinforced himself with both Busoshoku Haki and Tekkai.
Jinbe is a skilled and powerful user of Busoshoku Haki, which he can use in tandem seemingly effortlessly with his Fish-Man Karate and Fish-Man Jujutsu techniques. He fought evenly against Ace, a powerful Logia user for five days straight. By hardening his arms, Jinbei defended against a slash from Big Mom's Cognac for some time without receiving damage, surprising Perospero. Jinbe's Busoshoku Haki was advanced enough to withstand the Haki-enhanced Rokushiki techniques of the Ancient Zoan user, Who's-Who, and he is one of the few Busoshoku Haki users skilled enough to harden his entire body, or parts of it. His Busoshoku Haki is superior to Who's-Who's, as the transformed Rokushiki user's hardened index fingers broke against his hardened body.
Jinbe is able to use Kenbunshoku Haki. This has allowed him to sense the presence and Haki of others, such as a burst of Shanks' Haoshoku Haki, and later on Jaygarcia Saturn's arrival on Egghead.