much more intelligent, polite, and generally, more bearable than Luffy. Ace from One Piece is likely an ISTP personality type. This is evidenced by his preference for action over words, his independent and self-reliant nature, his tendency to think pragmatically rather than emotionally, and his ability to live in the moment and adapt quickly to changing situations. Biological son of Gold Roger, who’s a legendary fire fighter. And his sworn brothers, Sabo and Luffy. A polite guy.