Note: Contains spoilers for X-Men: Dark Phoenix.
As every Marvel fan knows, the X-Men are now set to join the Marvel Cinematic Universe after the Fox-Disney deal was completed.
"I think there will be a moment that we will do a cameo at the least. I mean these characters are so cool, these movies are so poignant especially within the Marvel Comic Universe that I think it would be a shame," actress Alexandra Shipp, who plays Storm, told Digital Spy.
Sophie Turner, who plays Jean Grey, added: "When we were filming it, I don't think it felt like this is the last time we'll ever be here."
But does X-Men: Dark Phoenix leave the door open for any of the characters to move into the MCU? We're about to dive into the movie's ending, so look away now if you want to avoid spoilers.
Let's deal with two of the biggest characters first in Charles Xavier (James McAvoy) and Magneto (Michael Fassbender).
Come the end of Dark Phoenix, Magneto has gone back to Genosha, his mutant safe haven, but he still has time for one final chess game with Charles in Paris. Charles has retired and Magneto wants him to come to Genosha. Whether he does or not, it's unlikely that either of them will pop up in the MCU as it's a fairly definitive end to their story.
Same goes for Jean Grey (Sophie Turner) and Mystique (Jennifer Lawrence) as they're both killed off in Dark Phoenix.
Sure, there's a Phoenix flame going across the sky in the final shot of the movie, but it's unlikely that Jean will rise again unless the MCU wants to do another Dark Phoenix Saga adaptation.
It's not such a clear-cut ending for the rest of the X-Men, though.
With Charles now retired, Beast (Nicholas Hoult) takes over the X-Men school, now renamed Jean Grey's School for Gifted Youngsters.
Cyclops (Tye Sheridan), Storm (Alexandra Shipp), Nightcrawler (Kodi Smit-McPhee) and Quicksilver (Evan Peters) are still at the school, so technically they could make an appearance in the MCU.
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Perhaps when mutants are introduced into that world, they need some guidance and get it from the school.
However, the problem is that Dark Phoenix is set in 1992, so if the same stars are going to come back, it would have to be in an MCU movie set in the past, like with Captain Marvel, where it would be revealed that mutants have always been around.
Or there would have to be some timey-wimey thing to bring this current class to the current 2023 time in the MCU. (Coincidentally, that's the same time the epilogue of X-Men: Days of Future Past is set).
They'd have to also explain why there's now a new Quicksilver, mind.
Interestingly, Jessica Chastain's villain, Vuk, has a history with the Avengers in the comics, so perhaps she could stir up some trouble in the MCU. She might've been killed by Jean, but resurrections aren't unusual in the MCU, or the rest of the D'Bari might seek vengeance.
Then, who better to call than a team of powerful mutants who've dealt with Vuk before...
And sure, we know that it's highly unlikely that any of them will pop up in the MCU, especially as the X-Men won't be introduced for a while yet. But until we know more about the X-Men in the MCU, anything is technically possible.
X-Men: Dark Phoenix is out now.
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