Columbus D. Penn (こらむぶす ど ぺん, Koramubusu Do Pen) is a pirate captain and protagnist of One Sea. He is related to Columbus D. Christos, the man who first sailed to Saobody. Penn has formed his own Pirate crew, The Origami Pirates. His main goal for becoming a Pirate is to find Christos, who vanished after leaving Saobody, as well as discovering the One Piece (if it's on the way).