Overview
- Marvel Studios released the third teaser in high definition on Jan. 6, revealing Patrick Stewart’s Professor X, Ian McKellen’s Magneto and James Marsden’s Cyclops.
- Additional returning mutants highlighted by outlets include Kelsey Grammer’s Beast, Alan Cumming’s Nightcrawler, Channing Tatum’s Gambit and Rebecca Romijn’s Mystique.
- The crossover positions the X-Men alongside the Avengers, the Fantastic Four and other MCU teams to confront Doctor Doom, portrayed by Robert Downey Jr.
- Marvel has set a global theatrical debut for Dec. 18, 2026, with some regional listings noting Dec. 17.
- The teaser features an abandoned Xavier School and visuals fans read as a possible Sentinel, and separate online leaks point to a Namor-focused teaser that has not been officially released.