Erebus

Erebus, also known as the Keeper of the Spire City of Dis or Slavemaster of the Dammed is one of the Archdemons that serve the Dark Lord. The most despicable and vile of all the Archdemons, he rules over the cursed souls of Hell who are damned to labor for eternity. Like the all the Archdemons, he answers to no one beside the Dark Lord.