Warning: This article contains minor spoilers from Maestro #2 by Peter David, German Peralta, Jesus Aburtov, Dale Keown, Jason Keith, and VC's Ariana Maher, on sale now.
The inscription on Thor's hammer Mjolnir reads "Whosoever holds this hammer if he be worthy, shall possess the power of Thor." Many male heroes in the Marvel universe have read this and attempted to lift the hammer, with only a select few being successful.
However, this inscription doesn't reveal its inclusivity as in Maestro #2 the granddaughter of Rick Jones is revealed to be worthy. Janis finds Mjolnir among a pile of rubble in what remains of New York City and lifts it with ease, making her the latest in a series of Marvel women who have been deemed worthy of lifting the hammer. Here is a look at who the other worthy women are within the Marvel Universe.
Storm
Ororo Monroe, aka Storm, is an omega level mutant whose power is weather manipulation. She is often referred to or seen as a Goddess, essentially making her the Goddess of thunder. In Chris Claremont and Art Adams' Uncanny X-Men Annual #9 Storm had lost her powers but regained them when she wields the hammer Stormcaster that was created by Thor's brother Loki with the same inscription and powers of Mjolnir. Loki created the hammer to manipulate Storm, though she would later give it up when she realized this.
Years later in Marc Guggenheim, Christopher Yost, and Derec Donovan's X-Men: To Serve and Protect #3 Storm once again picked up Stormcaster to become the true Goddess of Thunder, but after a fight with Thor she lifts Mjolnir and uses the hammer to destroy the evil Stormcaster.
Danielle Cage (Earth-21923)
In the world of Old Man Logan, Earth-21923, Luke Cage and Jessica Jones' daughter Danielle Cage is fully grown and aids the elder Wolverine in his quest to protect the young Bruce Banner Jr from the latest iteration of the sinister Weapon X program. In addition to becoming that world's new Captain America, Dani Cage is proven worthy as she lifts Mjolnir in Ed Brisson and Mike Henderson's Dead Man Logan #11 when she is shot by a Weapon X guard while defending Hulk Jr. and falls on a long time idle hammer.
Upon falling on the hammer it begins to stir. Danielle, realizing what this means, reaches out and grabs the hammer, becoming the new Thor years after that earth's Thor died. Danielle uses the hammer to make quick work of Weapon X and escapes with Old Man Logan and Hulk Jr. After Logan's death Daniele keeps the hammer and uses it to protect her world as the new Thor.
Captain Marvel
Carol Danvers, aka Captain Marvel, is one of the Marvel Universe's most powerful heroes. However, that power was amplified when she lifted Mjolnir in Kelly Thompson and Lee Garbett's Captain Marvel #16. In the "Last Avenger" storyline Captain Marvel was being forced by the Kree villain Vox Supreme to deliver him the dead bodies of every Avenger, with the catch being if she doesn't Vox supreme would detonate bombs hidden in Kree refugee camps.
Captain Marvel tricks Vox Supreme by giving him clone bodies of the Avengers. However, Vox reveals that he still plans to use those bodies to create an army. Captain Marvel begins battling Vox supreme but accidentally spills a chemical on herself that infused her with the personalities of her teammates, allowing her to call on Mjolnir to best her enemy.
Black Widow (Earth-23223)
Joe Keatinge, Mico Suayon, and Raffaele Ienco's What If? Age of Ultron introduces the Earth-23223 Black Widow. On this Earth Black Widow is a member of Nick Fury's Defenders and went on a mission to find Thor's hammer as it was lost after his death.
Upon finding Mjolnir she is deemed worthy and becomes the new Goddess of Thunder, using her newly acquired powers to fight the Midgard Serpent Jormungand. She destroys all of Asgard as well in the battle, seemingly killing herself in the process. She was later found to be alive and called to help fight Ultron on Earth-45162 and Earth-14622, where she uses her hammer to trap the robot.
Jane Foster
In Jason Aaron and Mike Deodato's Original Sin #7 Nick Fury, who had taken the place of the Watcher, whispers a secret to Thor that causes him to drop Mjolnir on the moon and prevents him from picking it back up. In Aaron and Russel Daunterman's Thor #1 Jane Foster has Heimdal take her to Mjolnir on the moon after it had been calling out to her and picks it up, becoming the Worthy Thor.
Jane would have many adventures as Thor, though it was killing her as she was suffering from cancer, and every time she transformed into Thor it wiped out any traces of chemotherapy from her body. Jane eventually had to choose between becoming Thor to save Asgard or staying human and trying to beat cancer. Jane chose to become Thor again to fight Mangog, knowing it would kill her when she transforms back into a human. After defeating Mangog Jane died, but was later revived.