A fresh report about Spider-Man 4: Brand New Day has ignited a fervor among Marvel enthusiasts online, with the spotlight now falling on Sadie Sink's long-awaited role in the upcoming sequel. The update revolves around the intriguing possibility of her character in the next chapter of the franchise, fueling widespread speculation and excitement.
The revelation that Sadie Sink is playing Jean Grey in Spider-Man 4: Brand New Day has sparked thrilling reactions. Trusted scooper Cryptic HD QUALITY, on X, has confirmed that the Stranger Things actor will be portraying "Jean Grey" in the upcoming Marvel Studios film, though Marvel Studios has yet to officially announce the casting.

Sink was cast in the film in March 2025, initially in an undisclosed role. At the time, Deadline reported that "the prevailing theory is she'll be introduced as X-Men character Jean Grey," echoing earlier reports by insider Jeff Sneider in December 2024. Months of speculation followed, with various names like Rachel Cole-Alves, Firestar, Spider-Girl, and Shathra circulating online.
Previous reports described a character believed to be Jean Grey acting in an antagonistic manner. One reported scene shows the character using mind control powers to manipulate Department of Damage Control guards into freeing Scorpion from prison. Additional leaks suggested the character turns Bruce Banner back into the Hulk, prompting Alex Perez to question how "this is something Jean Grey would do."
The latest rumor has elicited a range of reactions on X. One user wrote, "I think she would be a great Jean. If only they weren't giving the X-men costumes similar to these in the reboot." Another user posted, "Peak cast." A third user stated, "Jean Grey knowing Spider-Man's identity before the rest of the world is a WILD narrative choice. The dynamic just shifted. We are so back." Another added, "Plus she's playing her young! Guys, We're gonna be eating for a long time!"
Sink previously addressed joining the Marvel Cinematic Universe, saying, "Spider-Man has always been my favorite. I love Spider-Man. I love Tom's Spider-Man, especially." She added, "I have so many Spider-Man secrets I'm sitting on that feel even more secretive" (via The Hollywood Reporter).
The film is scheduled for release on July 31, 2026, and fans are eagerly awaiting its arrival to see how this new version of Jean Grey will fit into the Marvel universe.