The Marvel Cinematic Universe is getting a heavy dose of the big screen’s original “X-Men.” During Marvel’s lengthy cast reveal for its upcoming tentpole “Avengers: Doomsday,” it was revealed that many actors from Fox’s original run of “X-Men” movies will be returning to the comic book universe. That includes Patrick Stewart as Charles Xavier, Ian McKellen as Magneto, James Marsden as Cyclops and Rebecca Romijn as Mystique. All four actors debuted as their comic book characters in 2000’s “X-Men.” However, under the rules of the Marvel multiverse, it remains possible that these actors could be playing different versions of their characters — or even different characters entirely.

Also back to the delight of Marvel fans is Channing Tatum as “Gambit.” The actor spent years trying to make a Gambit movie at Fox but it never got off the ground. Lizzy Caplan was set to star opposite Tatum and recently revealed the plan was to put a “screwball romantic comedy spin” on the comic book movie. It wouldn’t be until 2024’s “Deadpool and Wolverine” that Tatum would get the chance to finally bring Gambit to the big screen.

Fans largely agreed that Tatum’s Gambit was one of the best parts of the movie, so his return in “Doomsday” is sure to elate some viewers. Tatum took to social media amid “Deadpool and Wolverine’s” release to share an emotional statement on finally getting the chance to play Gambit.

“I thought I had lost Gambit forever. But [Reynolds] fought for me and Gambit,” he wrote at the time. “I will owe him probably forever. Cause I’m not sure how I could ever do something that would be equal to what this has meant to me. I love ya buddy…I’m so grateful to be in this movie. It’s a masterpiece in my opinion. And just pure bad ass joy. I was literally screaming in the theater.”

Check out a rundown below of every “X-Men” actor returning for “Avengers: Doomsday,” in theaters May 1, 2026.