Abbadon
Also known as the Destroyer of Worlds, Abaddon was one of the celestial bodies. Its sole purpose was to consume everything that lay in its path. It was destroyed when it tried to consume the star known as Ethian.
The subsequent release of energy created the god, Apollyon, and the goddess, Aurora. Shaitan defeated Apollyon shortly thereafter and absorbed him, becoming Sartan, the Malevolent.