Tomohiko is a large man with a powerful build and stern facial features. He has his dark hair tied back in a short ponytail, with the strands spiking outward in many directions. His Hope's Peak Academy uniform was noticeably unique, including overalls, a dress shirt with the sleeves rolled up, and a yellow tie. Tomohiko appeared to be a quiet and reserved man; despite being visibly nervous, he reacted calmly when Junko Enoshima revealed she had blackmail material on them.