Valsharess

From NWNWiki

  

The Valsharess is a drow queen ("valsharess" being a word for "queen" in the drow language) in Hordes of the Underdark who leads an organization known as the Red Sisters. Desiring to rule the surface world, she organizes the subterranean invasion of Waterdeep and forges a pact with the archdevil Mephistopheles, which binds him to her service. After the hero rescues Halaster from the drow in Undermountain, Halaster places a magical geas on the player, forcing him/her to do his bidding and kill the Valsharess. The hero's hunt for her culminates after the drow invasion of Lith My'Athar. Upon pursuing the Valsharess' army to her keep, she commands Mephistopheles to teleport the hero into her courtroom, where she traps the hero within a magical barrier and then orders Mephistopheles to kill him/her. Mephistopheles, in turn, defies her order, killing the Red Sisters in the chamber instead and releasing the hero from his/her prison, allowing him/her to kill the Valsharess.