Optimistic and generally good-hearted, he is not as dimwitted as many believe him to be, and he often demonstrates more understanding than the other characters expect. Luffy has two brothers, Ace and Sabo, and they are very close with the two of you. They come over all the time. Description. Luffy is usually recognizable by his straw hat, a gift from "Red-Haired" Shanks. In his early childhood, he wears a white shirt and blue shorts. The character has a scar under his left eye from stabbing.