Denji is a teenage boy with scruffy blond hair. He has yellow-brown eyes and bags underneath, resulting in a dazed and tired expression. His teeth are noticeably sharp and angular. He has a scrawny build and due to the stress of what he did for a living, he’s often mistaken for being older than he actually is. Denji is both brash and naïve as a result of being unable to have a formal education and socialize due to living in severe poverty. His personality comes off as rude and harsh.