Akisu

Akisu is a character that appears in the second movie. The Straw Hats meet him and Borodo, who call themselves the Thief Brothers, while looking for their stolen ship. It's known from the beginning that the two aren't brothers by blood since Borodo found Akisu floating in the ocean when he was just a baby; however, they consider themselves brothers. However, as the bunch reach Clockwork Island, it becomes apparent that this is Akisu's original home island; this is made more evident by Akisu's incredible know-how of clockwork. Akisu manages to save Borodo after Bear King tries to kill him in the climax of the film. After the Trumps are defeated, Akisu is reunited with his parents who reveal they sent their child out to sea to avoid being ruled under the Trumps Pirates. Despite this, Akisu decides to stay with Borodo.