Sadie Sink has confirmed that she will play Jean Grey in Marvel Studios’ first X-Men film, following her introduction as the mutant character in Spider-Man: Brand New Day. The confirmation establishes Jean as a central figure in Marvel’s planned X-Men reboot and links the new team to the wider Marvel Cinematic Universe.

Sink’s Jean Grey is expected to appear after Avengers: Secret Wars, and the actor says she has discussed the character’s future with director Jake Schreier. She did not confirm whether Jean is heading to the X-Mansion in Westchester, but said she has been researching the character’s powers, flaws and struggles, which will shape her development.