Jane Foster is a fictional character appearing in American comic books published by Marvel Comics, most commonly depicted as a supporting character of the superhero Thor Odinson. Created by writers Stan Lee and Larry Lieber, and artist Jack Kirby, the character first appeared in Journey into Mystery #84 (Sept. 1962). For many years, Foster was a nurse, employed by Dr. Donald Blake, Thor's first mortal host, before becoming a doctor herself. In a 1978 and 2014 storyline, Foster is revealed to be deemed worthy to wield Thor's hammer Mjolnir when the former is no longer able. During this period, she adopts the name Thor, the Goddess of Thunder, and joins the Avengers. This storyline ends with the character sacrificing her life to defeat a dangerous adversary, and the reverting of the mantle Thor to its original bearer. After Brunnhilde and the rest of the Valkyrior are killed in The War of the Realms, during which Foster briefly acts as another Thor, Jane Foster takes up the mantle of Valkyrie.