Sadie Sink, the theatre actress turned mainstream star, is taking on another big project. The 23-year-old is reportedly joining the cast of the Marvel Cinematic Universe film Avengers: Doomsday, which is set to release at the end of next year. According to DEADLINE, she will begin filming in London sometime soon.
The report also mentioned that Spider-Man: Brand New Day is scheduled to open on July 31, 2026. While it’s unclear what role Sadie will play in the Spidey film, it’s confirmed she’ll join Avengers: Doomsday when it shoots in London later in 2026. Principal photography for the Avengers movie is expected to start in the summer of 2026. The film, which stars Robert Downey Jr., will now hit theaters on December 18, 2026, after previously being scheduled for May 1.
Sadie will be busy filming Spider-Man: Brand New Day until mid-December, while also promoting Stranger Things Season 5, in which she plays Max Mayfield. Her role in the Tom Holland film is still unknown, but fans are excited to see what she brings to the MCU.
In addition to her work in film, Sadie will play Juliet in Robert Icke’s production of Romeo & Juliet. Noah Jupe, known for A Quiet Place, will star opposite her as Romeo.
