An exiled archmage that is essential to banishing the demons
Vizeran deduced what had truly happened: Lolth had manipulated Gromph as a pawn to unleash the demon lords throughout the Underdark in order to gain absolute power in the Abyss. The demon lords in the Realms used faerzress to spread their madness. Vizeran devised a plan to send the demon lords back.
Therefore, at Gravenhollow, he approached an expedition led by the adventurers, hired by Bruenor Battlehammer to investigate the threat of the demon lords, offering his help.