Sadie Sink is making a fast jump from Spider-Man to the Avengers.
Deadline reports the actress will appear in Avengers: Secret Wars, filming in London later in 2026, following her role in Spider-Man: Brand New Day, which opens July 31.
Her role in the Spider-Man film remains under wraps, but Deadline says she’s already lined up for Marvel’s ensemble blockbuster that shoots after the Spidey movie hits theaters. Sadie is said to be filming Brand New Day through December.
“Spider-Man: Brand New Day is scheduled to open on July 31. There has been much speculation about the role Sink has in the Spidey film, and frankly, I do not know the answer, but I do know that she’ll join the cast of the next Avengers picture that shoots here in London later in 2026.”
How This Fits Into Marvel’s Plans
Sink jumping from Brand New Day straight into an Avengers film indicates Marvel may be setting up a character with long-term importance.
Fans have already been guessing everything from a mutant to a multiverse character, though nothing is confirmed.
What is clear is that Marvel doesn’t put an actor in both a Spider-Man film and an Avengers movie unless the character connects across stories and is a big role.
Still No Word on Her Character
Neither Marvel nor Sony has revealed who Sink plays. The secrecy around Brand New Day has only fueled more theories, especially now that she’s expected to appear in an Avengers movie soon after. F
For now, her character remains one of the biggest unanswered questions heading into Marvel’s next phase.
A Big Move for Sink and the MCU
Sink became a breakout star thanks to Stranger Things, and this move positions her as one of the next major faces in the MCU. With Brand New Day releasing in 2026 and the next Avengers movie shooting shortly after, fans won’t have to wait long to see how her character fits into Marvel’s larger plans.
