Leviathan, the gatekeepers of hell, they are able to switch between a serpent like body and a human body, they can create illusions and in their human form (as well as their serpent form) they are able to breathe underwater. They are a rank above demons and the only demons they respect are the king and the crown prince, the other demons slightly fear them.

Roleplayer @ Jeonseol Academy for the gifted as Leviathan Zhang Yixing