Biography
Although she has yet to appear pesonally, she is first mentioned by Ilias on the day she fell to the surface in Iliasville Mountains .
Upon discussing with the scholar versed in Tartarus in Ilias Temple, Luka can hear rumors of a woman with a white coat traveling around with another wearing a black coat near Tartarus (Gold Continent West).
She is mentioned yet again in the Ancient Temple Ruins when Luka unintentionally wakes up Brynhildr, and Ilias asks her whether Promestein created her, but Hild replies that her "Master" isn't Promestein.
She is mentioned again at the end of part 2, specifically on the Ilias route. The Ilias that has been residing in the Ilias Temple Ruins on the Snow Continent finally reveals to the Ilias of the original history that she recalls the Promestein from the original history cast the Six Ancestors Great Seal on her and had Black Alice cooperate with her to swallow Ilias and absorb her power.
In the Paradox world, it's revealed she was involved in the attempt of reviving Heinrich's spirit, but the group of scientists failed and instead summoned Black Alice from the original history, who became a third god, the Chaos Goddess and creating the Great Disaster.