He is very paranoid about the Resistance's hideout, not allowing anyone to leave the place. Haiji is deliberate and calculating, although others might call him cowardly.
Haiji's right forearm and palm are completely covered with an orthopedic cast, presumably from injuries suffered during the battle against the Monokuma army. He wears a buttoned-up shirt adorned with a detailed red rose pattern, a heavy black and red hooded jacket with beige fur trimming, and ripped black jeans. Haiji has long, disheveled black hair and lavender eyes.