Sadie Sink will reportedly play Jean Grey in the upcoming Marvel movie, Spider-Man: Brand New Day. The report comes from the reliable insider, Cryptic5KQual.
While the news has not been confirmed by official sources, the casting was something many fans expected in some way.
Sadie Sink Enters The Marvel Universe
The famous Stranger Things actor, Sadie Sink, will be making her way into the MCU with her upcoming role of Jean Grey. While it is unclear which version of the mutant she will depict, it will be big nevertheless.
Jean Grey is a major character in the Marvel comics. Her role in Spider-Man: Brand New Day signals her involvement in the future of the MCU, especially since we already know Sadie will be in Avengers: Secret Wars.
Previous Speculations Surrounding Her Role

Sadie Sink has previously talked about her role on multiple occasions, but done a great job of keeping it a secret. Fans had speculated that she could be the Wasp-Goddess Shathra following some rumors of the villain’s appearance.
However, those rumors were soon shot down, and we were back at square one. Now with some information from a credible insider, we might have the answer.
Plot of Spider-Man: Brand New Day

Four years after the events of Spider-Man: No Way Home, our web-shooting hero finds himself in a trail of crimes leading to a mystery larger than anything he has seen before.
To overcome the new challenges ahead and to protect those he loves, Peter Parker must take on the mantle again and team up with an unexpected ally.
Who Else Will Be In Brand New Day?

Aside from the main character, Jon Berhthal will return to play The Punisher. The angry green guy, Mark Ruffalo, will also be in the movie, alongside Zendaya as MJ.
Michael Mando will play The Scorpion, Marvin Jones III as Tombstone, and, of course, Jacob Batalon as Ned Leeds. Florence Pugh is also expected to join as Yelena Belova. There will be many more faces that should be revealed in due time.
Spider-Man: Brand New Day is scheduled to release in the US on July 31, 2026. The first trailer for the movie is expected to be released next month, so we can expect this to be confirmed very soon.
