“Day One…” the Russo Brothers wrote on Instagram with a photo of a chair that reads, “Victor Von Doom.” The chair is in the spirit of the Doomsday casting announcement, which was also done by showing the actors’ names on a chair. The chair of Victor Von Doom belongs to Robert Downey Jr., who will play Doctor Doom in the next two Avengers movies.

It’s officially Doomsday… at least on the set of the film. Marvel Studios has started production on Avengers: Doomsday , and the Russo Brothers have shared a photo from the set, and it all starts with Doctor Doom.

The Russo brothers have shared the first behind-the-scenes look at Avengers: Doomsday to mark the start of filming – and it's a familiar sight.