
Another major voice is backing the Jean Grey rumor.
Nerdrotic, a YouTuber, has confirmed that Sadie Sink will be playing Jean Grey in the upcoming film Spider-Man: Brand New Day, stating definitively, “It’s true.”
Okay, so according to Nerdrotic, this isn’t just another version of an X-Men character we’ve seen before from the Fox films. This seems to be Marvel officially introducing an X-Men character into the main MCU, which is huge! It suggests they’re finally ready to build their own team of mutants for the big screen, and that’s incredibly exciting.

An MCU Jean Grey, Not a Fox Variant
Nerdrotic points out that the Jean Grey character played by Sophie Turner isn’t related to the X-Men versions seen in Avengers: Endgame.
Rather, Spider-Man: Brand New Day could bring a genuine MCU version of Jean Grey into the mix, establishing Spider-Man as the character who introduces Marvel’s next wave of mutants.
If true, this suggests the film is subtly building the foundation for the future of the Marvel Cinematic Universe after the multiverse saga, instead of just depending on older, established characters.

Jean Grey and the Return of Savage Hulk
Interestingly, it’s been suggested that Jean Grey, as portrayed by Sink, is the reason Bruce Banner transformed back into the Savage Hulk.
Mark Ruffalo will be in the upcoming film, Brand New Day. Sources say Jean Grey’s abilities might be key to separating Bruce Banner from his merged form as Professor Hulk.
Connecting the X-Men to a major, ongoing storyline in the MCU would significantly increase the drama and importance compared to a typical Spider-Man adventure.

Mutants Triggered by Secret Wars
Nerdrotic also echoes a growing theory tied to Avengers: Secret Wars.
The idea is that events like incursions and chaos from across the multiverse will awaken hidden mutant genes throughout the Marvel Cinematic Universe, providing a reason for the sudden reappearance of mutants after a long period of not being seen.
Introducing Jean Grey in Spider-Man: Brand New Day before events like Doomsday and Secret Wars would essentially kick off Marvel’s mutant storyline in the movies.
Release info
- Spider-Man: Brand New Day : July 31, 2026
- Avengers: Endgame re-release: September 25, 2026
- Avengers: Doomsday: December 18, 2026
- Avengers: Secret Wars: December 17, 2027
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2025-12-15 03:31