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.

Avengers: Doomsday' has announced its star-studded cast, which includes some iconic superheroes (and shocking old ones) reprising their roles

Doomsday via a lengthy livestream that confirmed 28 actors set to appear in the superhero movie as well as the start of production. Among the surprises, Channing Tatum will reprise his role as X-Men fan-favorite Gambit.