Jane Foster might be known as one of Thor’s love interests in Marvel Comics but she eventually took on the mantle as Female Thor. Jane’s transformation into the Goddess of Thunder will occur in the upcoming Marvel Cinematic Universe movie, Thor: Love and Thunder. 

Jane’s first comic book appearance occurred in 1962 with Journey into Mystery #84 as a nurse for Dr. Donald Blake. Jane found herself stuck in a love triangle with Blake and Thor, not realizing that they were the same man: Blake was Thor’s mortal host. Thor later took Jane to Asgard where she was granted immortality, but Odin later stripped her of those powers believing she wasn’t courageous enough to harness them and sent her back to Earth with no recollection of her time on Asgard.

In Thor Vol. 4 #1, the God of Thunder lost his ability to wield the hammer. When the Avengers battled Nick Fury, the man whispered something in Thor’s ear, causing him to become unworthy of Mjolnir. The hammer stayed on the Moon as Thor, and even Odin, couldn’t move the mystical object. By the end of the comic book issue, an unidentified female character arrived on the Moon and lifted the hammer as the inscription on the weapon changed to: “Whosoever hold this hammer, if she be worthy, shall possess the power of… Thor.”

It was eventually revealed that, while Thor’s hammer was still on the Moon, it telepathically sought out Jane. She asked Heimdall to take her to the hammer’s location so he transported her to the Moon. When Jane picked up Mjolnir, she instantly transformed and gained Thor’s powers. Jane decided to keep her identity as Female Thor a secret but it drove the original Thor crazy not knowing who took control of the hammer.

In the MCU, Jane Foster will be transformed into Female Thor during Thor: Love and Thunder. The film by Taika Waititi serves as the fourth solo Thor installment, with Natalie Portman reprising her role as Jane Foster after appearing in Thor and Thor: Dark World as an astrophysicist and eventual love interest for Thor. Portman also appeared in Avengers: Endgame via archive footage during Thor and Rocket’s time travel mission to retrieve the Reality Stone housed in Jane’s body. Portman’s involvement in Thor: Love and Thunder was confirmed at Marvel Studios’ panel during San Diego Comic-Con 2019.