Broggok is the second boss in The Blood Furnace wing of Hellfire Citadel. When first approached, Broggok floats through the air on the far side of a gate with a lever in front of it. The encounter starts when the lever is pulled, releasing four increasingly difficult waves of elite fel orcs. Once each wave is defeated (or approximately two minutes has passed since the last wave was released) the next wave will come immediately. Once the fourth wave is defeated, the gate will open and Broggok will come immediately.