Doomsday adds intrigue and excitement to the movie. Doctor Doom will be a significant threat to all heroes in the film. Killing an X-Men star could establish Doctor Doom's power and serve as a catalyst for the X-Men's involvement in the story.

Downey Jr., who has portrayed the popular Marvel character Iron Man since the superhero's first film was released in 2008, will take on the role of Doctor Doom in the new Avengers, which hits theatres on May 1, 2026. The announcement that Downey would step into the high-profile role was met with overwhelming support from fans.