Sir Crocodile is a former Warlord of the Sea and the main antagonist of the Alabasta Arc in the anime series One Piece. As the president of the secret criminal organization Baroque Works, he operates under the alias 'Mr. 0' and masterminds a plan to take over the desert kingdom of Alabasta. Crocodile is known for his ruthless nature, strategic mind, and the ability to control sand with his Suna Suna no Mi Devil Fruit power. His role in the series is pivotal, as he presents a major obstacle for the protagonist, Monkey D. Luffy, and his crew.