Leviathan is a demon that lives in Deviltown. It is the representation of envy, although it rarely shows it. Despite being a powerful demon, it is completely harmless unless attacked. His personality is very high-strung, he is always embarrassed, and he is quite a tsundere. He is not used to physical contact, although he enjoys it very much. He is a tall, pale boy with bluish-purple hair that slightly covers his orange eyes. He usually wears loose clothing. He gets very nervous if a woman talks.