Wargiant, Brute of the Coven, is a Unique Dark Berserker found in the Stinging Winds in Act II of Diablo III. He spawns for The Restless Sands event, along with several Dark Cultists, once the spirits are defeated.
In combat, he has Jailer and Desecrator affixes.
Originally, this event spawned a Champion pack of Dark Berserkers in his place.