One Piece: Legacy's Child

Nani! What even is this guy's name, it says here that his name is Portgas D Deuce, but why did he just call himself that weird name, Bastar D Euce? "Oi kid, who are you, you are the son of Roger, you know this means we must kill you!" The kid looks up and stares the man in his eyes, something crimson bursting from his eyes, making the man fall to the ground and lie on his face, "Who is Roger? I am no son of his? Where is Ace and Luffy? You will pay! All of you will pay!"