The ‘Secret Cameo’ in Spider-Man 4 That Changes Everything (Sorry, Zendaya)

You thought the ending of No Way Home was heartbreaking? Prepare yourself. Leaked set photos from the upcoming Spider-Man: Brand New Day (July 2026) just dropped, and they reveal a casting choice that is going to shatter the Peter/MJ fandom. While we were all worried about the new villain, we missed the real bombshell: Sadie Sink is on set, and she isn’t just an extra.

Split screen of Sadie Sink smiling and Tom Holland as Spider-Man looking shocked.
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Fresh off the “Scorpion Suit” controversy (yes, the tail looks weird, we know), the real headline is the mystery role of Stranger Things star Sadie Sink. Insiders are reporting she is filming scenes directly with Tom Holland, and the chemistry is “pivotal.”

  • The Theory: Is she Gwen Stacy? Or—in a massive multiverse twist—is she Jean Grey from the X-Men (hinting at Avengers: Doomsday)?
  • The Problem: Peter Parker is supposed to be lonely and forgotten. If he moves on with a new “MJ-coded” redhead, it effectively kills the emotional weight of his sacrifice.
  • The Villains: Oh, and Michael Mando is finally back as Scorpion, but fans are already roasting his “tech-heavy” suit that looks more like a Call of Duty skin than a comic book villain.

If Marvel replaces Zendaya this quickly, it’s a risky move. The audience needs to feel Peter’s isolation. Bringing in a “New MJ” (Sadie Sink) feels like a cheap fix to a tragic ending. Unless… she’s actually a mutant, and this is how the X-Men finally enter the MCU timeline. If that’s the case? We forgive everything. Must Watch.

Be honest: Are you ready for Peter to date someone else, or are you still Team MJ? Tell me I’m wrong in the comments.

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