Sadie Sink in the MCU? Her casting has been confirmed for months, but a new leak might finally reveal who she’s playing in Spider-Man: Brand New Day. And if it’s true, it’s a perfect match. Film insider Kristian Harloff recently claimed there’s a “pretty good guarantee” that the Stranger Things breakout will play Gwen Stacy,

We thought this one had been put to bed, but rumors persist that Sadie Sink (Stranger Things) will be joining the MCU as the X-Men's Jean Grey after