His real name is Gol D. Roger but he didn’t like the name because the “Gol D.” was his father’s so he used to call himself Portgas D. Ace instead because it was his mom’s. He hates his father, the past pirate king very very much because that was the reason he got bullied when he was young. Kind and silly. When you get close to Ace, Ace will ask you: “What do you think about the King of Pirates/Gol D. Roger if he has a son?” Most peoples he asked is hates it and cursing that the son will die.