Jean Grey is one of the most popular and powerful characters in Marvel Comics, and she has a long and complicated history you might not know about.

Brand New Day ahead! Seriously, like... the big one. The who-is-that-secret-character reveal spoiler. Thwip away if you’ve somehow managed to avoid it and want to remain pure when you see the movie. Spider-Man: Brand New Day introduced a pretty major player from Marvel Comics to the MCU,

Both Jean and Sara Grey have made their debut in the MCU, but the famous X-Man's sister is a little different on the page versus on the screen.

THE SECRET ORIGIN OF SARA GREY! Protecting the cosmos as Phoenix, Jean Grey has experienced near-limitless mystery and wonder – a universe of perpetual possibility! But nothing so magnificently unexpected as this: Her sister, Sara, has returned to life.

One of the big questions hanging over Marvel Studios' upcoming X-Men reboot isn't just who will make the team, it's who will lead it. Fans have been debating whether the franchise should center on Cyclops,