Responses
D means Devils/Demons. Just kidding. No D doesn't mean Donquixote lol there's not much info about D just that they are nemesis of the "Gods" which Doffy(celestial) is.
no, D stands for Dickbutt, lel
btw guys.. you think the "D" means Donquixote??? since dofla is also affected by luffy's "D" when he saw that, and the thing that he is the king, gonna be the pirate king, related to that ancient celestial dragons?