Avengers: Doomsday's cast will include at least one star from Fox's X-Men movies.

During Marvel Studios' livestream to announce Avengers: Doomsday's cast, it was revealed that Beast actor Kelsey Grammer will appear in the MCU movie.

Grammer first played Beast in X-Men: The Last Stand before making a cameo in X-Men: Days of Future Past. Recently, he ed the MCU in Avengers: Doomsday's full cast list.

What Kelsey Grammer's Avengers: Doomsday Casting Means

The MCU Is About To Use The X-Men In A Big Way

With Grammer confirmed for Avengers: Doomsday, it seems like at least one of the Earths that will come into an incursion with the MCU's Earth-616 has become known. The X-Men are set to play a role in the next Avengers movie before Marvel Studios' version of the team debuts. While Beast and Binary showed up in The Marvels, they were clearly in a version of the X-Men mansion, and Grammer's character mentioned that he was going to talk to Charles Xavier. Avengers: Doomsday could show a full universe of variants of Fox's X-Men characters, if not their original selves.

Doctor Strange in the Multiverse of Madness introduced the concept of incursions, which are the events that happen when multiple Earths collide, destroying one or more of them. The MCU has already shown a few universes, and The Marvels' X-Men Earth, the Illuminati's Earth-838, and more could come clashing with Earth-616, leading to the new Avengers fighting the X-Men and other heroes for survival. Another possible route the movie takes is that Grammer's Beast and his X-Men team assist the Avengers as they fight Doctor Doom, which could then also turn into a fight between the teams in the end.

Our Take On Kelsey Grammer's Avengers: Doomsday Casting

The MCU's Next Avengers Movie Just Got Even More Exciting

I'm excited about Grammer's confirmation. I always wanted to see more of his Beast after X-Men: The Last Stand and the MCU made his design even better with great CGI in The Marvels. With Beast and the universe he is from set to be in Avengers: Doomsday, I think we can now finally see those rumors about the Avengers fighting the X-Men come true. The incursions are about to throw the multiverse into disarray, and everyone will want their Earth to survive. I also like how it shows The Marvels' importance, as it leads directly into Avengers: Doomsday.

All Announced MCU Movies

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  Thunderbolts*

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  The Fantastic Four: First Steps

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  Avengers: Doomsday (2026)

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  Spider-Man: Brand New Day

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  Avengers: Secret Wars

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Source: Marvel Studios/YouTube