Via a slow, four-hours-and-counting stream of names on the backs of directors chairs, Marvel Studios has announced that Patrick Stewart is on the cast list for the Russo brothers upcoming MCU movie Avengers: Doomsday. The stream, still in progress, is continuing to list former X-Men actors wholl be in the movie, including Ian McKellen, Alan Cumming, Rebecca Romijn, and most recently, James Marsden.The announcement stream is only revealing actor names, not roles. Its easy to infer that Patrick Stewart will be playing the role of mutant leader Professor X he did, after all, reprise his 00s turn in the Fox X-Men movies as an alternate universe version of the character in the MCUs Doctor Strange: In the Multiverse of Madness and any argument to the contrary was dispelled by the reveal of McKellens name. McKellen memorably portrayed Professor Xs opposite number, Magneto, in a series of X-Men movies, though McKellen hasnt returned to the role since 2006s X-Men: The Last Stand.Cumming played the X-Man Nightcrawler in one film: 2003s X2: X-Men: United. Rebecca Romijn was last seen as Mystique in 2006s X-Men: The Last Stand. James Marsden played Cyclops in all three Bryan Singer X-Men movies before the characters anticlimactic death in X-Men: The Last Stand. He turned up for a cameo in the time-traveling story of 2014s X-Men: Days of Future Past.Fans have waited years for the Marvel Cinematic Universe to feature characters from Marvel Comics legendary X-Men silo, and the waiting only got harder after Marvel Studios recouped the film rights to the X-Men when the Disney company acquired 20th Century Fox Studios. Whether these folks are on hand to play these characters for keeps in the MCU, or theyre just appearing in cameos as alternate-universe elder statesmen, clearing the way for the MCUs future X-Men film franchise, the announcement of their involvement says one thing: Marvel has a plan for the X-Men, and its first steps are (hopefully) finally here.This story is in active development, and will be updated as new X-Men actors are revealed as part of the Avengers: Doomsday cast.The next MCU movie to hit theaters will be Thunderbolts*, on May 2. Avengers: Doomsday is currently scheduled for release on May 1, 2026.