Rovagug

Rovagug is the God of Evil, and a primordial god. Rovagug joined with Vaxili to murder Curash, and used his corpse to create the Celestial Bodies. The primordial gods created their champions of magic and power to create further before going into a deep sleep.

Rovagug put his mental essence into two each with their own dimension outside of the Earth. Asmodeus, the god of Laws, created Hell. Kalderus, the god of Chaos, created the Abyss.