Hattori is a pet pigeon belonging to Rob Lucci, a prominent antagonist and member of CP9 in the anime and manga series One Piece. Hattori is often seen perched on Lucci's shoulder and is notable for mimicking human speech, often acting as Lucci’s 'voice' for comedic effect. Although Hattori does not play a major combat role, he is a memorable character due to his unique interactions with Lucci and the Straw Hat Pirates, adding humor and personality to the storyline.