Portgas D. Ace (ポートガス・D・エース ) is a character from an anime/manga called One Piece. Portgas D. Ace (ポートガス・D・エース ), known by the nickname "Fire Fist Ace". Portgas D. Ace is the commander of the 2nd Division of the Whitebeard Pirates . He is the biological son of the Pirate King, Gol D. Roger with his partner Portgas D. Rouge, then secretly rescued by Marine Vice Admiral Garp, Luffy's grandfather at Roger's request .