Gargoth

"In Mannoroth's name!"

Gargoth was a feared Pit Lord commander of the Burning Legion's forces on Antorus, with Sargeras' imprisonment; he and Behamahl tried to muster whatever forces they could to enact their revenge upon the mortals of Azeroth.

Arathi Conflict
With the legion's downfall, Gargoth has been planning his revenge upon the mortals of Azeroth ever since. When he heard that N'Zoth's minions have overtaken the Eastern Kingdoms; he and Behamahl formed the Hellwrath Vanguard and quickly went to assault Arathi Highlands.

During the battle of Stromgarde, Gargoth was meant to lure the heroes' primary strikeforce while Behamahl and the others would attack the defenseless keep, he was severely injured by the mortals' combined attacks and was forced to retreat.

Tirisfal Conflict
Gargoth still remains wounded after the battle of Stromgarde, he is recovering from his injuries and left Behamahl in charge until then.