Jean was the villain of Spider-Man: Brand New Day, but is she a killer?

Spider-Man: Brand New Day introduces a new version of Jean Grey, setting the stage for a new take on the X-Men.

Spider-Man: Brand New Day' has confirmed that Sadie Sink will be playing Jean Grey in the MCU. Now, that confirms a lot about the X-Men as well.

Kevin Feige explains why X-Men character Jean Grey debuted in Spider-Man: Brand New Day

Warning: This article contains spoilers for "Spider-Man: Brand New Day." Where do we even begin? If you are one of the $1.1 billion worth of people who's seen "Spider-Man: Brand New Day," you might be wanting to learn more about Jean Grey.

Sadie Sink's rumoured character in Spider-Man: Brand New Day has intrigued MCU fans. Jean Grey is one of Marvel Comics' most powerful mutants and a crucial X-Men member. Here's everything to know about her.

SPOILER ALERT: This interview contains spoilers for "Spider-Man: Brand New Day," now playing in theaters. As "Spider-Man: Brand New Day" director Destin Daniel Cretton delved deep into development, he spent time figuring out which villains would be most exciting to watch in an action sequence.

Peter Parker has spent a good chunk of his MCU career looking to someone else for answers. Iron Man took him under his wing, Mysterio and Nick Fury became influential figures in his life, and Doctor Strange was dragged into Peter's spectacular multiversal mess in Spider-Man: No Way Home .

Who is Jean Grey? Here's why fans believe Sadie Sink could play the iconic X-Men mutant in Spider-Man: Brand New Day and what the rumors reveal.