Peter Parker's classmates are being phased out of significant screen time in Spider-Man 4. The sequel film, swinging onto screens on July 31, 2026, is ushering in some big changes on its plate—and that includes bringing Stranger Things alum Sadie Sink on board.

Stranger Things star Sadie Sink will join Tom Holland in the fourth Spider-Man film. Filmmaker Destin Daniel Cretton ( Shang-Chi and the Legend of the Ten Rings) is helming the movie that is currently untitled. Erik Sommers and Chris McKenna penned the screenplay.

Stranger Things alum Sadie Sink will be joining the film in a mystery role. Other than Tom Holland, who will be reprising his role as Peter Parker, Sink is the only confirmed cast member. Naturally, the Internet has been speculating about who Sink could be playing — is she a new take on Gwen Stacy,

Although her role is being kept under wraps, entertainment industry publication Deadline reported it will be a "significant" part, and she will potentially be introduced as X-Men character Jean Grey.

Following the news that Stranger Things star Sadie Sink is being lined up for a lead role in Spider-Man 4, we have some thoughts on who the actor is most likely playing in the No Way Home

Sadie Sink is joining the Marvel Cinematic Universe. The “Stranger Things” star has been cast in “ Spider-Man 4 ,” in which she’ll share the screen with Tom Holland as the web-slinging Avenger.

Sadie Sink has been cast in Spider-Man 4 and gee, I wonder who she's going to play. But some seem to disagree.