The Strongest Family? Luffy's Father Revealed!.While Garp is revealed to be Luffy's grandfather, his harsh upbringing methods explaining the pirate's endurance while criticizing his grandson's choice to become a pirate, Zoro attempts to attack the navy soldiers until he and Luffy end up facing Garp's two personal attendants who are revealed to be old acquaintances they have met at the start of their journey: Coby who has achieved his dream and Captain Morgan's son Helmeppo. While he and his soldiers proceed to repair the wall he destroyed, Garp makes things more astonishing by revealing that Luffy was saved from Captain Smoker in Loguetown by Monkey D. Dragon. Although Luffy does not know of him, and everyone else too dumbfounded by this mind-blowing revelation while Garp asks everyone to forget what he said, Robin explains to Luffy that Dragon is the leader of a rebel faction usurping the World Government and is among the government's most wanted criminals.