Avengers: Doomsday trailer reportedly leaks online ahead of release

The first trailer for Avengers: Doomsday has reportedly leaked online ahead of its planned theatrical debut, sparking widespread discussion across social media platforms.

The footage was expected to premiere exclusively in theaters alongside Avatar: Fire and Ash, which opens this week, but clips and screenshots from the trailer have begun circulating online.

According to multiple posts on X, the leaked Avengers: Doomsday trailer is not widely accessible in full, though still images and brief descriptions have surfaced. Reports emphasize that the footage avoids major plot revelations and instead focuses on reintroducing a familiar character from the Marvel Cinematic Universe. The trailer reportedly features Steve Rogers, also known as Captain America, confirming his return to the franchise.

Viewers familiar with the leaked material claim the teaser concludes with on-screen text stating, “Steve Rogers will return in Avengers: Doomsday,” followed by a countdown pointing toward the film’s release date. Marvel Studios has not commented on the leak, nor has it released the trailer officially online.

An earlier report from Feature First suggests that Marvel’s marketing strategy for Avengers: Doomsday includes four separate teaser trailers. The first focuses on Steve Rogers, while the second is expected to spotlight Thor, portrayed by Chris Hemsworth. The third teaser is rumored to introduce Victor von Doom, played by Robert Downey Jr. A fourth and final trailer is said to function as the first full teaser for the film rather than centering on a single character.

As leaked footage continues to spread, fans hoping to experience the trailer as intended may need to avoid social media until Marvel releases the teaser officially. Avengers: Doomsday is currently scheduled for release in December 2026 and marks the first Avengers film since Avengers: Endgame in 2019.