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.