The daughter of a famous marine hero is definitely of higher social status than the son of the worst criminal in the world. Dragon probably joined the Marines at some point (hiding his full name of course), likely after the death of Xebec, and trained under Garp, the man who helped take down his father. Dragon became close to his master, fell in love with his master’s daughter and took their name, rejecting his father’s.
Something later must have happened to cause Dragon to revolt against the World Government, mirroring Xebec, though his cause is more righteous.
Both Rocks D. Xebec AND Monkey D. Garp are Luffy’s grandfathers.
Maybe this is the real ultimate secret of why Woop Slap is the only person who gets upset at Luffy’s increasing bounty and infamy, why he never wanted Luffy to become a pirate in the first place, why he specifically flips out when Luffy makes an enemy of the World Government. He knows about Garp, Dragon, Luffy, Dadan, Makino, Shanks, Ace, Roger, and all the history between them. Somehow. Maybe he’s just one of the only people who knows enough about the world to see the second rise of Rocks from a different angle.
Why might it be Luffy’s “Fate” to become a pirate?
Woop Slap asks this question which has always stuck in my mind and has only gotten more mysterious since. Luffy’s father is a Revolutionary. His grandfather is a Marine Hero. Luffy shares Roger’s will, but no one knew this at the time, and the dream he shared with Roger is something only he himself, Sabo, and Ace knew. Nothing about Luffy’s life or past would indicate that Luffy might become a pirate at all, save for Shanks being his friend. But why would something as small as that make it fate? What could possibly make Woop Slap concerned about Luffy’s future as a pirate if no one in his entire family is a pirate?
Well, if Luffy is Dragon’s real son, but Dragon isn’t actually Garp’s son but Xebec’s, this might be why Woop was so against Luffy being a pirate in the first place and thought he’d bring shame to Foosha Village. If Luffy’s grandfather was Rocks D. Xebec, the most fearsome pirate in the world, someone so evil that he had to be wiped from history with only a few people from the older generation even knowing his name, then it makes perfect sense why Woop Slap is the only one getting upset every time his bounty rises, every time his name gets more infamous, every time he becomes more of an enemy of the World Government.
It would also add yet another parallel to the growing mirror match conflict with Blackbeard, as Teach is clearly the one inheriting Xebec’s will, not Luffy, even if Luffy may have inherited his blood.
*Theory by ArturCantSpeakJapanese
