The Marvel Cinematic Universe is known for its tight security, with the cast and crew tasked with guarding the secrets of upcoming Marvel movies. Case in point: Sadie Sink's mysterious Spider-Man role, which turned out to be exactly who fans thought it was... Jean Grey. Folks who spent years watching the Marvel movies in order know that the studio keeps its cards close to the chest. I’m just happy that the secret is finally out and that Sadie can stop dodging the question. Although poor Sadie Sink had to do countless interviews without revealing who she was playing or what she actually did in the blockbuster.