The Smolderthorn tribe of trolls are one of two tribes of forest trolls that belong to the Dark Horde, a renegade group of orcs, trolls, and ogres, who dwell in Blackrock Spire. Commanded by Rend Blackhand, the Dark Horde has not given up the battle to claim Azeroth, although Rend's forces are significantly smaller than Thrall's Horde. A group of warlocks drives the Dark Horde, which has not relinquished the original Horde's involvement in demonic magic. The Dark Horde is essentially still fighting the Second War, but Rend and his group know that they stand little chance of success, despite their alliance with the black dragonflight.