Sanji is one of the most crucial characters in One Piece, being a part of the main cast of the story, and the cook of the Straw Hat Pirates. Sanji joined Luffy during the Baratie arc, and ever since then, he has been incredibly important to the main plot. Sanji has not only proven himself to be a fantastic cook, but at the same time, an incredible fighter as well a fighter. In fact, Sanji hails from Baratie, which is a ship of fighting cooks.