Karla

Karla The Grey Witch (so named because of her obsessive neutrality) is the enigmatic sole survivor of the ancient kingdom Kastuul, "Kingdom of Sorcery." As barbarian tribes laid siege to the city, Karla, a member of the nobility at the time, foresaw the destruction and sealed her consciousness into a circlet she wore on her forehead. Though her original body was inevitably killed in the battle, her consciousness (and power) lives on in an endless series of host bodies, utterly possessed by her so long as they wear the circlet in which she resides. Due to the horrible fate of Kastuul, Karla swore never to allow such destruction to occur again. Karla has maintained a secret, shadowy influence on the major events of Lodoss for more than 500 years. Her long life and incredible power has warped her perception of herself. Her sworn duty "for the good of Lodoss" is to endlessly shift the balance of power between the various nations of Lodoss, preventing the annihilation of any one power, at the cost of preventing its rise. All of the major wars in Lodoss since the fall of Kastuul have been carefully manipulated (and some directly participated in) by her, though by nature of her neutrality, she is not always an antagonist. She was even one of the "Six Heroes" - a group of adventurers who fought and defeated the Demon God King 30 years prior to the events of the series.