Audiences now have their first look at the return of several of the X-Men from the 20th Century Fox X-Men movies in a new teaser for Avengers: Doomsday, released online on Tuesday, January 6th. Those who have seen the teaser include Patrick Stewart as Charles Xavier, Ian McKellan as Magneto, and James Marsden as Cyclops.

The teaser was first seen in front of screenings of Avatar: Fire and Ash. It was one of several to be released this way, with the others featuring the return of Chris Evans as Steve Rogers and another with the return of Chris Hemsworth’s Thor.

Stewart, McKellan, and Marsden aren’t the only X-Men returning for Avengers: Doomsday. Other X-Men actors returning include Kelsey Grammer as Beast, Alan Cumming as Nightcrawler, and Rebecca Romijn as Mystique. Channing Tatum’s Gambit, first seen in Deadpool & Wolverine, is also set to return.

The X-Men are just one of the many ensemble casts throughout the MCU set to return to face off against Robert Downey Jr’s Dr. Doom. These include the main cast of the Fantastic Four, the Thunderbolts (AKA the New Avengers), Shuri and M’Baku, and Shang-Chi.

Avengers: Doomsday is set to be released in theaters on Dec. 18th.