Steve Rogers is a dad, Thor is tired, and octogenarians Patrick Stewart and Ian McKellen are still locked into Marvel contracts: welcome to Avengers: Doomsday. The latest of three teaser trailers has been released, this time confirming the return of the X-Men to fight Phase 6’s Big Bad. It follows confirmation that Chris Evans would unexpectedly return as Steve Rogers/Captain America (formerly), and another teaser in which Chris Hemsworth’s Thor prays to Odin for the strength to defeat one more enemy.

In this X-Men teaser, we see the return of Stewart as Charles Xavier/Professor X, McKellen as Erik Lehnsherr/Magneto, and James Marsden in a comic-accurate suit as Scott Summers/Cyclops.

While Patrick Stewart made a cameo appearance as a multiversal variant of Professor X in Doctor Strange In The Multiverse Of Madness, it’s been over a decade since fans last properly saw these X-Men incarnations. Marsden and McKellen last played these roles in 2014’s X-Men: Days of Future Past. And while they don’t appear in this particular teaser trailer, we also know that franchise OGs Alan Cumming will return to Avengers: Doomsday as Nightcrawler, alongside Rebecca Romijn as Mystique and Kelsey Grammer as Beast.

Avengers: Doomsday releases December 18th, 2026. Before then, there’ll be Spider-Man: Brand New Day on July 31st, 2026.