Leviathan, Envy of the Seven Deadly Sins

Name: Leviathan, Demon Prince of Envy; The Great Leviathan, 'Levi' by his brother Mammon

Age: Unknown

Leviathan is the demon of envy and it's in charge of making humans desire material and sentimental things that their fellows possess. He is the one that planted the seed of evil in Cain before he killed his brother Abel. Leviathan's true form is a giant sea serpent with multiple mouths capable of swalowing multiple ships at once. His flesh form is a tall, slim man with aquamarine hair.

Leviathan rarely leaves hell and if he does he does so in his true form, travelling around the globe in the deepest parts of the ocean. He has destroyed multiple vessels , submarines and even caused tsunamis. If he even goes to land, usually he does by coming out of the ocean. He doesn't involve himself in human affairs for he loathes them for their ability to cooperate with each other. Deep inside he hates his brothers too.