Prison Warden

"Ah... you are the pitiful group of fools from the Prime Material Plane, I see. Well, you will disturb my prison no further. No one escapes this place... no one."

Gameplay
While classified as a fighter/mage in the files, he is clearly a level 18 conjurer, that wants to wield a long sword. Having the thralls freed will help tremendously in defeating him as he will use the really dangerous spells on them first, after which a breach and hasted fighter will make quick work of his 70 hit points.