Doomsday cast list, ahead of the movie's 2026 release. Last summer, Marvel Studios head Kevin Feige confirmed a new direction for Avengers 5, which had previously been titled Avengers: Kang Dynasty. After an underwhelming response to the villain Kang - and Marvel parting ways with Kang actor Jonathan Majors - Feige announced a new MCU antagonist in the form of Robert Downey Jr's Doctor Doom.

Robert Downey Jr. returns to the MCU with other confirmed actors including stars Chris Hemsworth and Tom Hiddleston, 'X-Men' stars like Patrick Stewart and Ian McKellen, and a good chunk from the studio's 'Thunderbolts.

Rebecca Romijn, 52, will officially return as Mystique. She starred as the shapeshifter in “X-Men, X2: X-Men United,” “X-Men: The Last Stand” and “X-Men: First Class and Joan in The Punisher.”