Doomsday. We know that because a bunch of them, including Patrick Stewart and Ian McKellen, are confirmed for the gigantic MCU crossover. Their presence is fueling a lot of theorizing, and some fans think they may have spotted the Avengers vs.

Chris Hemsworth, Vanessa Kirby, Anthony Mackie, Kelsey Grammer, Tenoch Huerta, and all the actors confirmed for 'Avengers: Doomsday.'

Endgame." Many fans are wondering when is the next Marvel Cinematic Universe film and who's retuning to the Avengers? This week, Marvel unveiled the star-studded cast of "Avengers: Doomsday" during a livestream event with each actor being revealed one at a time with a glimpse at the back of their director's chair.