Sakazuki, also known by his alias Akainu, is a prominent character in the anime and manga series One Piece. Serving as the fleet admiral of the Marines, he is known for his strict adherence to absolute justice and his ruthless methods. His devil fruit power, the Magu Magu no Mi, allows him to create and control magma, making him one of the series' most formidable fighters. Sakazuki's uncompromising nature and dedication to the Marine cause often put him in conflict with other characters, emphasizing his role as a significant antagonist.