Kragdar

The Kragdar are four evil dark mages who lived many eons ago. During the Great Purge these mages were hunted down, and killed. They were then taken to a specially made tower called Wizard Hole and interred there, with powerful magic and spells placed on the tower to ensure that no one could enter, or the mages could not be raised from the dead.

The Kragdar or Dark Four as they were known, practiced some of the darkest magic, rumored to be from spell books found deep in Deep Dirt, and the Underhalls. Magic so dark and so vial, that during the Great Purge even their fellow Dark Mages turned on them for being so evil.