Monkey D. Luffy's father is Monkey D. Dragon, also known as Dragon the Revolutionary. Dragon is the leader of the Revolutionary Army, a powerful organization opposing the World Government. He is known as the "World's Worst Criminal" and is one of the most wanted men in the One Piece world

. Dragon is the son of Monkey D. Garp, Luffy's grandfather, who raised Luffy after Dragon left him in Garp's care to protect him from the dangers associated with his revolutionary activities. Dragon has kept a distance from Luffy to shield him from enemies but has shown concern for his son's welfare, such as when he helped Luffy escape from Marine Captain Smoker in Loguetown

. Luffy's mother remains unknown and has not been revealed in the series, with the author Eiichiro Oda suggesting she may never be introduced