Jinu in his demon form has light purple-blue skin with demon markings, sharp claws, and fangs. He has yellow eyes with black, slit pupils. He wears the traditional Korean clothing for the grim reaper/Chinese Hopping vampire/zombie.

In his human form, Jinu has straight black hair, dark brown eyes and pale skin. He has a muscular build as well and pierced ears. In his backstory he is shown to be dirty and wearing a topknot.

Demon, musician, charisma, He is 400 years old.