Avengers Doomsday trailer to debut with Avatar: Fire and Ash

The first Avengers: Doomsday trailer will debut in theaters on December 19, 2025, attached to screenings of Avatar: Fire and Ash, according to multiple sources confirming the news to Collidercollider.
The trailer will arrive almost exactly one year before Avengers: Doomsday hits theaters on December 18, 2026, and will give fans their first proper look at Robert Downey Jr. as the villainous Doctor Doomcollider.
Principal photography on the film wrapped in September 2025 after a five-month shoot, with directors Anthony and Joe Russo returning to helm the Marvel Cinematic Universe team-up following their work on Infinity War and Endgamecollider.
The marketing strategy mirrors Disney’s recent approach of attaching the Avatar: Fire and Ash trailer to theatrical screenings of The Fantastic Four: First Steps earlier in 2025collider.
The film will unite multiple eras of Marvel under one multiversal roof, featuring returning MCU stars, legacy X-Men actors from the 20th Century Fox films, and newcomers to the franchisecollider.

Avengers Doomsday Trailer to Debut with Avatar: Fire and Ash

Marvel fans will get their first look at Avengers: Doomsday sooner than expected. Multiple sources have confirmed to Collider that the first trailer for the highly anticipated superhero ensemble film will debut in theaters on December 19, 2025, attached to screenings of Avatar: Fire and Ash.collider

The timing positions the trailer’s arrival almost exactly one year before Doomsday hits theaters on December 18, 2026. This marketing strategy mirrors Disney ‘s recent approach of attaching the Avatar: Fire and Ash trailer to theatrical screenings of The Fantastic Four: First Steps in July 2025.thedirect

What to Expect from the First Footage

According to reports, the first Doomsday trailer will provide a substantial look at Robert Downey Jr.’s Doctor Doom rather than just a brief glimpse. Sources describe the villain as having a “classic Universal monster” vibe, with his scarred, broken body requiring the armor to function—drawing comparisons to Darth Vader.reddit

Marvel Studios has reportedly prepared “multiple different versions” of the trailer. One version allegedly features Chris Evans and Hayley Atwell as Steve Rogers and Peggy Carter, though not in superhero costumes. Some fans may get an even earlier preview at “a particular Sunday event in December,” according to industry insider Cryptic4KQual.comicbookmovie

Production and Marketing Timeline

Avengers: Doomsday wrapped principal photography in mid-September 2025 after a five-month shoot. The film was directed by Anthony and Joe Russo, who return to the Marvel Cinematic Universe after helming Avengers: Infinity War and Endgame. Additional photography is planned for early 2026, which is standard practice for Marvel productions of this scale.screenrant

The film reunites numerous MCU veterans with legacy X-Men actors and the new Fantastic Four cast, creating what Marvel describes as a multiversal crossover event. As Avatar: Fire and Ash is expected to be one of the highest-grossing films of the year—following the franchise’s track record of Avatar: The Way of Water earning $2.32 billion globally—attaching the Doomsday trailer maximizes its reach to moviegoers.comicbookmovie

Whether Marvel releases the trailer online simultaneously remains unclear, though bootleg versions are expected to circulate rapidly given the film’s massive fan anticipation.comicbookmovie