Gerk

Gerk is a dwarf quest giver at Thrym's End in Zul'Drak. He has been captured by Scourge forces and is currently dying by being dissolved in a vat of goo. He asks the adventurer to grant him vengeance by killing the nearby Vargul.

Quests
He gives the quest Light Won't Grant Me Vengeance. He is also involved in the quest That's What Friends Are For...