Leviathan

Little is known of the whereabouts and purpose of the being known as Leviathan or sometimes as Rahab. The creature apparently began its existence not as a demon, but as a primordial beast, a relative of Lotan, Tannin or Tiamat. Other tales cast it as the fallen angel of the depth. What it was and how it became a demon is utterly lost to the mists of history.

Leviathan

Worterburgh Skritz91