Mordoc SeLanmere Mordoc SeLanmere , also known as the Pale Knight or the White Prince , was the self - proclaimed first and utmost powerful vampire king in all of Toril . Mordoc was the disciple of Eldrith the Betrayer , he , however , was not a loyal servant to her . He did provide to her slaves and members for her army . Bio . Battle of Bones and Keep of Pale Night . Mordoc , after becoming the king of the Vampires , led his army of Vampires , Nightwalker s and Nightshades into the Battle of Bones where they began to thrive . Just outside , or at the edge , of the Battle , Mordoc built the Keep of Pale Night where his Vampire Servants lived with him . At a time , the assassin Karne was sent to kill him , however , Mordoc defeated Karne in battle and appeared to kill him . Karne however , had found his mortal enemy and had feigned his death . Mordoc then pledged his alligence to Eldrith the Betrayer , though his true masters lay in Mulhorand . Mordoc ' s ultimate goal was the destroy the city of Baldur ' s Gate and through Eldrith , he hoped to achieve this . He assisted Eldrith by supplying the troops of the Dark Alliance . Mordoc then proved himself to be an excellent alchemist when a thief working under Karne in Xantam ' s Guild . Mordoc was unaware that this thief was working for Karne and built him the Orb of the Undead , which was used to animate the dead in the Crypts of Ilmater . When Vahn , Kromlech and Adrianna killed Eldrith and used a shadow gate to escape the Onyx Tower , Mordoc was overjoyed as he was now the ruler of the Onyx Tower . Mordoc informed his allies in Mulhorand of the delay and informed them of his plan to move the Onyx Tower to Baldur ' s Gate to destroy the city . When the Harpers activated all the elemental foundatons to activate the tower and hope to seal it , Mordoc gained access to the tower . However , Karne discovered Mordoc ' s plan and with his enemies , the Harpers Jherek , Dorn Redbear , Allessia Faithhammer , Ysuran Auondril , Borador Goldhand and Vhaidra Uoswiir , the Keep of Pale Night was infiltrated . Karne then freed Vahn , Kromlech and Adrianna from Mordoc ' s holds and with Jherek , he stayed behind to fend off Mordoc ' s zombies , mummies and shadow creatures . The eight adventurers fought Mordoc and bested him in battle causing him , weakened , to flee and move the Onyx Tower to Baldur ' s Gate . Mordoc ' s Gate . Mordoc used the Onyx Heart to transform the citizens of Baldur ' s Gate into zombies under his will , while his vampires transformed other citizens into vampires . The soldiers outside of Baldur ' s Gate launched a desperate attack against the undead . Mordoc renamed Baldur ' s Gate , Mordoc ' s Gate and to allow his allies from Mulhorand to enter the Onyx Tower , he added an entrance to it . While it took the eight adventurer ' s , Karne and Jherek about a month to enter Mordoc ' s Gate , their appearance changed the tide of the battle . Karne and Jherek assissted the soldiers of Baldur ' s Gate in their battle against the zombies , while Dorn Redbear defeated the vampiric form of Randalla , the lieutenent of Mordoc ' s general Xanhast . The eight adventurer ' s then entered the Onyx Tower through its newly added entrance , a small situation that would bring his downfall . They advanced through the Onyx Tower and eventually through the final shadow gate , which had been restructured to go to the Plane of Shadow . The eight adventurer ' s once again battled Mordoc , who had become nearly as powerful as a god . They managed to , however , kill him , leaving one of them entitled to the leadership of the Onyx Tower . However , they decided to destroy the Onyx Heart , whcih in turn broke the Elemental Foundations , destroying the Onyx Tower and restoring Baldur ' s Gate to the way it was . Notes . A Home . Mordoc SeLanmere was a Vampire King who was the most powerful Vampire in all of Toril . Mordoc and his servants went to the Battle of Bones where they quickly conquered the Battle and created a new Vampire Army in which Nightwalker s , Skeleton Warrior s and Zombie s served . Mordoc had given a home to the vampires and created the Vampire Castle , the Keep of Pale Night . Scattering . Upon the death of Mordoc SeLanmere in an attempt to hold the Onyx Tower , the Vampires in the Battle of Bones scattered . It is likely there are multiple factions in the Battle looking to gain control of it and become the next Vampire King . If this is so , then each faction has its own army in which Nightwalkers and other Undead Creatures serve , much like they did under Xanhast , servant of Mordoc SeLanmere