Sadie Sink Reportedly Cast as Jean Grey in Upcoming Marvel Films

"Stranger Things" star Sadie Sink is reportedly cast as Jean Grey, one of the most powerful characters in Marvel Comics history, in Marvel's upcoming "Spider-Man: Brand New Day" (2026) and "Avengers: Secret Wars" (2027). This casting decision suggests a new direction for the X-Men characters within the Marvel Cinematic Universe, with Sink's character potentially playing a pivotal role. The news comes after over a year of speculation regarding her involvement.