Sadie Sink’s Jean Grey Is Officially Sticking Around for Marvel’s X-Men Reboot
Mutant mania has been building steadily across the Marvel Cinematic Universe, and ‘Spider-Man: Brand New Day’ just gave fans their first real taste of what a modern take on the X-Men could look like. The film’s release confirmed that Sadie Sink is playing Jean Grey, a founding member of the X-Men, ending a year of speculation about her mystery role. That reveal alone was enough to send comic book fans into a frenzy, but it turns out her time as the telepathic mutant is only just getting started.
Sink made her MCU debut as the fan favorite mutant in ‘Spider-Man: Brand New Day,’ and audiences have already praised her version of the character as an improvement over previous iterations. With Marvel’s mutant saga still shrouded in secrecy, every scrap of casting news has become a major event for the fandom, and this week brought the biggest confirmation yet.
Variety reported that Sink will officially return as Jean Grey in Marvel’s ‘X-Men’ reboot, tying her Spider-Man debut directly into the next chapter of the mutant saga, with the outlet sharing the update alongside the D23 hashtag as anticipation builds for the fan expo. The timing lines up with growing chatter that Marvel could use the event to finally pull back the curtain on more of its mutant roster.
Sink isn’t alone in this venture. Samara Weaving has been cast as Emma Frost and Kit Connor as Cyclops, with Thunderbolts director Jake Schreier attached to helm the project while Beef creator Lee Sung Jin and The Bear co-showrunner Joanna Calo handle the screenplay.
Sink has started opening up about what drew her to the role, and the picture she paints is far from a simple hero’s journey. Speaking with Variety, she explained that giving Jean a backstory was essential given her actions in ‘Spider-Man: Brand New Day,’ noting that the character is deeply flawed and has been harmed even though she isn’t meant to be a villain. That framing, she said, gives Jean’s choices real motive rather than turning her into a stock antagonist.
The actress also teased where that complexity might take her next. She said the more she researched the X-Men, the more she realized what makes them special is that they are all incredibly flawed and have sometimes done bad things, which she believes makes for more compelling and complex heroes. Sink has already met with Schreier and taken part in screen tests alongside potential castmates, even though she admits she still doesn’t have every answer about Jean’s future.
The film is currently expected to hit theaters in 2028, though rumors persist that Jean could pop up in ‘Avengers: Secret Wars’ before then. No official release date has been locked in, and Marvel has stayed characteristically quiet on further plot details. Still, with three major mutants already confirmed and a director who just proved he can juggle a crowded ensemble on ‘Thunderbolts*,’ expectations are climbing fast.
Between Sink’s candid comments and the mounting D23 speculation, it feels like Marvel’s mutant era is finally taking shape in real time. Which version of Jean Grey’s arc are you hoping this reboot leans into first, her fractured backstory or the road toward the Phoenix?

