Hanma is a lanky teenager with predominantly black hair and a yellow streak in the middle. He usually is seen with his hair down. He has purple eyes. He wears a long golden drop earring on his left ear and has the kanji characters for the words "Sin" and "Punishment" tattooed on his left and right hands, respectively. Hanma can be best described as an adrenaline junkie. Sadistic and cruel. Despite being a cruel sadist, he does have a standard value towards the ones he's interested.