Avengers: Doomsday Star Shares Photo Inside What Looks Like X-Mansion From Fox X-Men Universe

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I was so excited to see a photo posted by one of the people who worked on *Avengers: Doomsday*! It looks exactly like a room inside the X-Mansion from the old *X-Men* movies. With Disney now owning 20th Century Fox, it’s amazing to think those classic X-Men characters will finally be joining the Marvel Cinematic Universe and teaming up with the Avengers! It feels like everything is coming full circle, and I can’t wait to see it happen.

As a huge X-Men fan, I’m so excited about the team’s potential return! It seems like their classic base, the X-Mansion in Westchester, New York, might be featured in the upcoming movie. Simu Liu, who’s in *Avengers: Doomsday*, recently shared a photo that fans think gives us a peek inside the legendary mansion – and it’s getting me even more hyped for the 2026 release as filming wraps up!

Okay, so Simu Liu – who we’ll be seeing again as Shang-Chi in the next Avengers movie – dropped a pretty interesting photo on his Instagram Stories. It seems like he and a few others were having a meal in a room that *really* looks like the inside of the X-Mansion! Marvel shared a screenshot on X, and fans are already buzzing about what it could mean. Definitely a curious little tease!

It’s uncertain if the photo was taken on the set of *Avengers: Doomsday* – Liu likely wouldn’t share a picture from such a secretive production. However, the ornate wood paneling in the photo strongly resembles the interior of the X-Men’s headquarters from previous films.

The image also shows some filming equipment, like a light and a camera, which suggests this might be the X-Mansion as it appeared in *Doomsday*.

Before production even started on *Doomsday*, people were speculating that the movie would feature the X-Mansion. Photos leaked in June 2025 appeared to show a large-scale battle taking place at the iconic location, suggesting a showdown between the Avengers and the X-Men characters previously associated with Fox.

The new movie, *Avengers: Doomsday*, coming to theaters on December 18, 2026, will bring the Marvel Cinematic Universe and the world of the X-Men together in a major way. The Avengers will team up with heroes from across the Marvel universe, and some familiar faces are confirmed to return, including Patrick Stewart as Professor X, James Marsden as Cyclops, and Sir Ian McKellen as Magneto.

How Will the X-Men Factor Into Avengers: Doomsday?

Ever since comic book movies became popular, fans have dreamed of seeing the Avengers and X-Men team up in a movie.

Following the success of *Deadpool & Wolverine* in 2024, which connected the Marvel Cinematic Universe with the world of the X-Men from Fox, fans will finally see the highly anticipated team-up they’ve been waiting for in next year’s *Avengers: Doomsday*.

Fans are still wondering how these incredible, changed characters will play a role in the next *Avengers* movie.

Reports about the upcoming movie suggest that while Robert Downey Jr.’s Doctor Doom will be a villain for both the Avengers and X-Men, the core conflict will center around a battle between the two teams. The stakes are incredibly high: whichever team wins will ensure their universe doesn’t get destroyed.

The most probable outcome seems to be a conflict between the X-Men and the Avengers, followed by a realization of the bigger threat. They would then join forces to fight Doom, likely in the final part of the *Doomsday* saga or its follow-up film, *Avengers: Secret Wars*.

After wrapping up the Multiverse Saga, and giving the X-Men from the Fox universe a proper send-off, the Marvel Cinematic Universe will likely introduce its own team of X-Men and their iconic mansion following the events of *Secret Wars*.

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2025-09-19 22:05