The Betrayer Gods were all the gods who, for one reason or another, chose not to fight against the Primordials during the Founding. Some went mad; some joined the legions of the Abyss. They are all evil-aligned. Recently, Vecna was added as the ninth Betrayer God.

These gods were defeated by the Prime Deities, and the Divine Gate was created to keep them from crossing over into the Material Plane.