Krik'thir the Gatewatcher – The gates of Azjol-Nerub stood unchallenged for centuries until the arrival of the Lich King. In mockery of Krik'thir's inability to protect his home, the nerubian was raised into undeath and forced to protect the very gates he failed to guard successfully in life.
Hadronox – During the fall of Azjol-Nerub, nerubian viziers released a single spider that would one day grow to challenge the unyielding forces of the Lich King. Hadronox was instilled with a desire to avenge the fallen and reclaim its home from any that dare threaten it.
Anub'arak – The fates of Azjol-Nerub and Anub'arak have long been intertwined. In life, he was the empire's king. In death, he was its conqueror. Charged by the Lich King to protect his old empire once more, the traitor king stands vigilant against any that threaten his kingdom.