One of the most powerful combatants in the Straw Hat Pirates, Sanji has played an integral role in the journey of Luffy and his crew through the Grand Line in One Piece, since his introduction in the Baratie Arc. Known as "Black Leg Sanji" for his ferocious kick-based fighting style, he became a pirate in order to seek out the All Blue, a specific location where all the world's seas meet.