It's becoming more and more likely that Luffy made himself Garp's grandson on purpose.

Yes, because Luke is Garp's grandson.

wait, Really?
the Player who uses Garp is Luke's Gradpa?

oh, man I cant wait for water 7 and Garp's Fist of Love-the 'wake up you idiot' punch

Oh, I have no idea. I was just trying to be funny. But it would amuse me greatly if it were so.

WAY WAY BACK on page 14, Luke said that he named himself "Monkey" because he saw it in the book and thought it was cool. Gordon then hastily scribbled some notes, presumably because he already had plans for Garp and Dragon.

I meant that way back at the beginning, it was implied that it was something Like did on accident, and the GM was working it in.

Ah yes the curse of 'I have no memory of that or this character you speak of.'

Even Nat forgot about Helmeppo's name!