Eustass "Captain" Kid (ユースタス・“キャプテン”キッド Yūsutasu "Kyaputen" Kiddo?) is a notorious pirate from the South Blue.
Eustass Kid is notorious for causing huge amounts of civilian casualties. He is generally either angry or making sarcastic jokes. When he feels that he is being insulted, he is quick to resort to violence, as shown when he attacks Scratchmen Apoo, for apparently staring at him. He is quite sensitive to being mocked, insulted or glanced at. He also seems to be cruel even when not provoked, as he crucified another pirate crew he and his men defeated, just because he deemed them too weak to roam around in the New World.