The first teaser for Avengers: Doomsday is finally arriving soon. The Marvel Cinematic Universe began Phase 6 this summer with The Fantastic Four: First Steps, and this phase will conclude by 2027 with two Avengers movies. According to Collider, the Avengers: Doomsday trailer will premiere before Avatar: Fire and Ash on December 19.
Principal photography for this Phase 6 film finished on September 19, 2025. Directed by Anthony and Joe Russo, the movie reunites a big superhero team.
Robert Downey Jr. returns to the MCU, but instead of his iconic Iron Man, he will play Victor von Doom, also known as Doctor Doom. He will reprise this villainous role in the 2027 film Avengers: Secret Wars, which has yet to begin filming.
The Avengers: Doomsday cast was unveiled during a surprise live-stream by Marvel Studios. Multiple actors from the Fox-Marvel X-Men era are making comebacks:
"The mutants' reunion doesn't stop there."
This returning X-Men ensemble adds significant excitement to the 2026 Marvel installment.
Author's note: The Avengers: Doomsday trailer is set to premiere in December, marking a major milestone for Phase 6 with familiar faces from both Avengers and X-Men franchises returning.