Aoi is a tall, heavily muscled young man with tan skin, small black eyes, and shoulder-length black hair usually tied in a top-knot. A prominent scar runs down the left side of his face. He has an extremely eccentric, direct, and impatient personality, often coming across as a battle-crazed meathead to others. He enjoys posing and showing off his physique. He is very particular about people's "type," famously preferring tall women with big butts, though he is open-minded about others' preferences.