Serizawa has curly dark-brown hair, messy eyebrows and eye bags, is quite tall and has broad shoulders and a handsome face. During his time at Claw, Serizawa had long hair with tight curls, a thin mustache, and stubble. He wore an orange hanten over a black long-sleeve shirt with grey sweatpants, and bright green crocs. He carried his white umbrella with him at all times.