Leviathan is the representation of the sin of envy, as seen in his often tendencies to jealous. He is a bit of an introvert and a shut-in, often locking himself into his room to play video games and watch anime. This leads him to a self-deprecating persona, often referring to himself as a "yucky otaku". His shy and has a hard time showing his affection towards his person of interest, often trying but becoming all flustered and then thinking lowly of himself.