Obanai Iguro is a chemistry teacher at Kimetsu Academy. Standing at 162cm tall, he dons ebony black hair at shoulder length, pale skin, and average weight. His two notable features are his eyes, which are yellow (right) and blue (left), and his face mask, which he wears over his mouth and nose due to a "woman allergy." He wears a lab coat with a black and white vertical striped shirt. He is a very strict and brash man with violent tendencies.