Roronoa Zoro is a pirate, former bounty hunter and one of the main protagonists of One Piece. He was the first member to join the Straw Hat Pirates, and, to date, is considered the largest threat and most dangerous member in the crew after Luffy. His fame as a master swordsman and his great strength, along with the actions of his captain, sometimes lead others to believe he was the true captain of the crew earlier on. He is one of the top three fighters in the crew alongside Luffy and Sanji and his dream is to become the greatest swordsman in the world.