Dr. Jane Foster is a physician who empowers herself as the mighty goddess of thunder Thor when wielding Mjolnir or as the deathly Valkyrie when wearing the Undrjarn the All-Weapon. Foster has become entangled with the adventures of the Norse god of thunder Thor on Earth for working in the past as a nurse for his human alter-ego Donald Blake. Deeply fascinated with the divine hero, for years her life was influenced on many levels by his actions.
Tragedy was inflicted upon Foster when her husband and son died in a car accident and she contracted breast cancer. This drastically changed Foster's views on worshipped deities and brought her closer to Thor again...
