Gol D. Sid is a pirate hailing from Karate Island in South Blue though his mother was originally from Loguetown. He is the biological cousin of the deceased Portgas D. Ace and is considered to be a brother of sorts by Monkey D. Luffy. He is the son of Gol D. Roger's cousin sister and thus one of the last surviving living blood relatives of the late Pirate King. He is known by the epithet Orange-Haired Sid due to his bright orange hair.