The Darklands (d20)

From the back cover: "This book definitively lists every single Darklord, including their statistics weapons, description and image, combat style and personality. Their powers, their provinces and their legions are all described in detail. There is no force of darkness in Magnamund greater than the Darklords. Incarnations of evil born of pure malice and hatred, they are the personifications of evil brought forth into the world by Naar, the true Lord of Evil and the greatest of the Dark Gods."