The Dark Iron clan (a.k.a. Clan Dark Iron, Dark Iron dwarf) was ruled by the Sorcerer-thane Thaurissan and was unsuccessful in seizing control of Ironforge from the Bronzebeard clan and the Wildhammer clan. Now ruled by Emperor Dagran II under regency of Moira Thaurissan, daughter of Magni Bronzebeard, after the death of Emperor Dagran Thaurissan at the hands of Adventurers, the Dark Irons live in Blackrock Mountain as the slaves of Ragnaros. Dark Iron dwarves are neither mountain dwarves nor hill dwarves but rather considered just shadowy, wandering sorcerers. (LoC 19). Under Moira's guidance it seems some will move into Ironforge and train dwarves as warlocks.