Korekiyo is aloof and somewhat disturbing, very cool-headed and intelligent. He can keep himself composed even under stressful circumstances and faces things with a calm and rational approach, rather than an emotional one. He is aware that his appearance and behavior can cause him to appear unsettling at times. He is tall (6'1"). Has very long black hair. He always wears a black mask with a zipper covering his mouth, neck and nose. He has beautiful, sharp yellow eyes. In his late 20s (26-27).