We Know When the First 'Avengers: Doomsday' Trailer Will Arrive [Exclusive]

First 'Avengers: Doomsday' Trailer Expected This December

The first footage of Avengers: Doomsday is anticipated to premiere in theaters this December, alongside another major Disney release. Although the movie will not hit cinemas until December 2026, fans may soon get a sneak peek.

Trailer to Accompany 'Avatar: Fire and Ash'

Sources reveal the initial teaser for the MCU's upcoming team-up film will be shown before the latest Avatar movie, Fire and Ash. If this plan remains unchanged, viewers will see the first glimpse of Robert Downey Jr.’s titanium-masked villain starting December 19.

The timing is fitting, as James Cameron's third Pandora adventure releases almost exactly one year prior to Doomsday's December 18, 2026 debut.

Setting the Stage for the MCU's Next Chapter

With Thunderbolts and The Fantastic Four: First Steps arriving this year, the groundwork for Doomsday is largely in place. Earlier this year, Marvel surprised fans by revealing cast chairs that hinted at the return of several 20th Century Fox X-Men characters.

Alan Cumming, reprising Nightcrawler, shared that he began filming before the script was even completed.

Secrecy Surrounding the Project

Despite the developments, Marvel has kept many crossover details tightly under wraps, even from the cast involved.

Summary: The debut trailer for Avengers: Doomsday is set to premiere in December 2025, preceding Avatar: Fire and Ash, building anticipation for the MCU's major 2026 release.

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Collider Collider — 2025-11-06

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