Remnants of the Blackrock clan under Rend Blackhand, son of Warchief Blackhand. They rejected Thrall's New Horde entirely, kept their fel corruption, and hold Blackrock Spire alongside their allies.
Rend styles himself Warchief. He is allied with Nefarian — who appears to him as Lord Victor Nefarius and is very obviously using him.
Composition
Blackrock orcs · Dark Horde trolls (Smolderthorn, Firetree) · ogres · black dragonkin supplied by Nefarian
Where
Upper Blackrock Spire and Lower Blackrock Spire · Burning Steppes · Redridge Mountains (Stonewatch — besieging Lakeshire) · Blackrock Mountain approaches
