After hours of literally nothing but shots of chairs, Marvels bigAvengers: Doomsdaycasting announcement ended with an appearance by Robert Downey Jr., whos returning to the Marvel Cinematic Universeafter five years of retirement to play the newDoctor Doom in the film.Downey walked all the way down that long row of chairs, then shushed the camera, and that was that.So why this odd gesture? 275 million people tuned in to watch some of this announcement; now you want them all to be quiet? In our latest video, well give you our theory about what RDJr.s appearance (and that shush) in the casting announcement means. Plus, well go through the entire cast list for the film, and explain who they are playing, and what we expect theyll be doing in the film. How will the Fantastic Four connect to Downeys Doctor Doom? Why are there so manyThunderbolts in the film? Well tell you below:READ MORE: The Worst Marvel Comics EverIf you liked that video on what we can expect from every member of the Avengers: Doomsday cast, and why RDJr. shushed everyone, check out more of our videos below, including one on how the Marvel Cinematic Universes Multiverse Saga should have played out, one on the potential for a secret X-Men movie from Marvel, and one on all the Easter eggs in Daredevil: Born Again Episode 3. Plus, theres tons more videos over atScreenCrushs YouTube channel. Be sure to subscribe to catch all our future episodes. Avengers: Doomsday is scheduled to open in theaters on May 1, 2026.Sign up for Disney+ here.Get our free mobile appEvery Marvel Cinematic Universe Movie, Ranked From Worst to BestIt started with Iron Man and its continued and expanded ever since. Its the Marvel Cinematic Universe, with 35 movies and counting. But whats the best and the worst? We ranked them all.Filed Under: Avengers: Doomsday, Doctor Doom, Marvel, Marvel Cinematic Universe, Robert Downey Jr.Categories: Movie News, Superheroes, Videos