The ghostly Dark Iron dwarf Anger'rel can be found in Blackrock Depths. Speaking with Doom'rel starts a boss encounter in which you will face the seven ghost dwarves, one after another. If you are successful in defeating all of the dwarves the Chest of the Seven will spawn, rewarding your party with two rare quality items. Defeating the Seven opens a door allowing typical parties to progress to the end of the instance.

This NPC can be found in Blackrock Depths.