Vayle
Necromantress of Doomwood
Vayle is a necromancer whose love for her brother Edward is bound up with grief and resentment. She holds Artix responsible for destroying Edward’s undead body and damaging the shard that held his spirit. Her desire for revenge is possessive enough that she insists on keeping Artix alive for herself to kill. She makes his protection from Vordred a condition of using the shard’s remaining power to restore the Hero.
Even an opportunity to say goodbye to Edward does not end that hostility. In one possible ending, Vayle saves Artix and confronts him, only for Edward to say he could never have been brought back and to thank Artix and the Hero. She parts from her brother but still calls Artix her mortal enemy.
Sources
AQW Wiki: Vayle · Official AQWorlds lore guide · Vayle’s farewell (game-scene transcript)