“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.

The MCU sequel has now officially started filming in the UK, with the directing duo teasing the arrival of Robert Downey Jr.'s supervillain.

Doomsday has officially begun with Robert Downey Jr’s Victor Von Doom, aka Doctor Doom. The film is slated to come out on May 1, 2026. Directors Joe and Anthony Russo previously helmed the two most successful Avengers movies to date,