Of course, the Mighty Thor storyline involving Jane Foster are no laughing matter. In it, Thor is deemed unworthy to wield Mjolnir ,and Jane Foster wields it instead. Except, there’s a bit of a catch. During this time, she’s also battling cancer and, whenever she transforms, her body is rid of chemotherapy, putting her in even worse health. It’s rare that the MCU deals with these kinds of serious issues, so it’ll be interesting to see if (or how) Taika Waititi handles it.