Aizetsu (哀あい絶ぜつ Aizetsu?) is a tall and muscular young man with shoulder-length hair and narrow, deep blue eyes with the daiji of "Upper Rank" (上じょう弦げん Jōgen?) and "Four" (肆し Shi?) engraved into them. He has two prominent curved horns on his forehead and cracked markings under his eyes.