Uldred before

Uldred is a villain in Dragon Age: Origins, one of the head mages of the Circle of Magi who is actually a very powerful demon. Like practically all the villains in the game, Uldred was also an ally of Loghain Mac Tir prior to becoming a demon. During the storyline, he launches an attack on the Circle's tower with an army of abominations including the Sloth Demon, and tries to turn all the mages into abominations. When encountered after defeating the Sloth Demon, Uldred reveals his true form (pictured) and can actually succeed in turning the mages into monsters if the player does not use the Litany of Adralla throughout the fight to interrupt Uldred whenever he tries to do so.