Mordeth

Commander Mordeth is one of Horde's most vile and feared leaders. The few enemies that have met him and survived feel as if they have been forever changed, as if all that is left of them is a hollow [soulless husk of their former being]. Most end up taking their own lives as they no longer have a reason to exist, the ones who are too cowardly to do so go [mad].

Just look at that picture. Terrifying.