Archdemon

The Archdemons are the personal subordinates of the Nameless One, and are second only to the Dark Lord in their power and authority.

Members
Only one Archdemon is currently known by name:
 * Erebus: Called the Keeper of the Spire City of Dis and Slavemaster of the Damned, Erebus is said to be vile and despicable even by the standards of his own kind. He commands the damned souls enslaved in Hell, forcing them to build ever greater monuments and cities in his name for all eternity.