Jane Foster (Joint Venture)

Jane Foster is a former love interest of Thor's, who herself became Thor and a member of the Avengers. This is the Joint Venture Universe's incarnation of the character.

From Nothing
Jane Foster does not speak of her past before coming to work at Donald Blake's lower Manhattan clinic. All that is known is that she was a foster child (hence the name), bounced from home to home in her childhood while simultaneously struggling to learn medicine and become a nurse.

She was first taken in by Donald Blake, whom she had met as a teenager volunteering at a homeless shelter some years previous. Despite several years having passed since that day, Donald seemed not to have aged; indeed, he seemed younger and healthier when Jane applied for residency at his clinic than he had in line for the soup kitchen. Donald's compassion and caring for others, and his refusal to turn anyone away who was in need, touched Jane deeply, and in turn, her resolve and determination not to give up on difficult tasks inspired him. Eventually, the two fell in love.

Separation
Depite their strong attachment to each other, neither Donald nor Jane intended for the clinic to encompass their entire lives. Eventually, during one of her rare days off, Jane met an exploratory scientist named James Kincaid, with whom she hit it off immediately. However, she was still very much in love with Donald, so she was determined to keep their relationship platonic. Donald even met James a time or two, and the two men got along well.

Regrettably, even though Donald didn't remember his past, it would still come back to haunt both him and Jane. First, a mysterious woman calling herself Amora appeared at the clinic, and compelled Jane to follow her using some method the nurse did not understand. Jane's scientifically-oriented mind could not comprehend the magic being used on her, and neither could she resist it. It turned out Amora was leading her into the blade of her companion, Skurge the Executioner. However, just before he could strike the killing blow, Jane was saved by James. Despite being unable to fight, James managed to hide Jane from Amora and the Executioner...or so he thought. In truth, Amora had staged the encounter specifically to put James in a heroic light, and encourage Jane's feelings for him to deepen, with help from her own not-inconsiderable magic. The plan worked flawlessly; within a month, Jane left Donald and her job at the clinic, and married James, pursuing a second career as his assistant, and eventually his partner in the exploratory sciences.