Avengers: Doomsday Trailer Strategy Ramps Up as Brolin Teases Possible Thanos Return

Overview

• The first Avengers: Doomsday teaser is expected to play in theaters ahead of Avatar: Fire and Ash on December 19, according to multiple reports.
• John Campea reports Marvel has commissioned 20–30 or more trailer cuts from multiple vendors to land on the final version.
• Kristian Harloff says the teaser will spotlight Doctor Doom but may deliberately avoid revealing his face.
• Josh Brolin told Entertainment Tonight he might reprise Thanos if Joe Russo approaches him, which signals openness but not confirmation.
• Insider chatter points to Doom-led multiversal elements such as variants or Doombots and a revenge-driven arc, all unverified; the films remain dated for December 18, 2026 and December 17, 2027 with Robert Downey Jr. officially playing Doom.