Monkey D Garp. is a Marine vice admiral. He is the grandfather of Monkey D. Luffy and the adoptive grandfather of Portgas D. Ace. He took charge of both Coby and Helmeppo's training. After the war, he became a Marine Instructor to train new recruits. Garp is one of the major figures, along with Sengoku, Shiki, and Whitebeard, from the times when the "Pirate King" was still alive!