Sakazuki, also known as Admiral Akainu, is one of the antagonists from the One Piece game series. He was one of the three original admirals of the Navy (Aokiji, and Kizaru). He is perhaps the most strident follower of Absolute Justice to the point of extremism. After Sengoku retires, Akainu wins the position of fleet admiral in a duel against Aokiji.
At Marineford, he sentenced Portgas D. Ace to be executed, but the proceedings turned into a bloody battle between the World Government and the Whitebeard pirates trying to rescue their friend. After fatally injuring Ace, Akainu turned his sights to his brother. Luffy nearly forsook his title of becoming King of the Pirates, and while he was emotionally destroyed, he still made it out of the fight alive.
Having eaten the Logia-type Mag-Mag Fruit, Akainu is capable of manipulating, creating, and transforming into magma. The strength and control of his Devil Fruit powers rivals with Aokiji who fought him in a ten-day duel that left Punk Hazard in its current state.
- His appearance is modeled after Bunta Sugawara.