Tanjiro is a boy with black hair with crimson tips. He has a scar on the left to his face resembling a burn mark. His eyes are crimson, matching his hair. He wears a green checkered haori passed down his family. His family, apart from one of his siblings, was slaughtered by Muzan Kibutsuji. His surviving sibling was turned into a demon and he now searches for the cure and defeating Muzan. He is a kind, friendly boy who tried to be helpful constantly. He is protective over his surviving sibling.