Teasers and a countdown suggest Avengers: Doomsday could spell MCU's end

Movieweb reports that Marvel's Avengers: Doomsday marketing — four teaser trailers, a "Doomsday Clock" livestream and a countdown to the film's Dec. 18, 2026 release — has prompted a theory that the title may signal a literal end for the Marvel Cinematic Universe when the clock reaches zero.

Joe and Anthony Russo have hinted the four teasers are telling a connected story and urged fans to find clues, with the initial post ending in the hashtag "DoomsdayHasBegun." Marvel uploaded the Doomsday Clock livestream on Jan. 13, 2026; the name echoes the symbolic Doomsday Clock and, according to the report, links to the comic-book concept of incursions.

As explained in Doctor Strange in the Multiverse of Madness, "an incursion occurs when the boundary between two universes erodes, and they collide, destroying one or both entirely." The article notes that Jonathan Hickman's New Avengers storyline "Time Runs Out" and its countdowns leading to Secret Wars appear to be a key influence, and that the trailers emphasize death and finality with lines such as Magneto: "Death comes for us all.

Key Topics

Culture, Avengers Doomsday, Marvel Cinematic Universe, Doomsday Clock, Secret Wars, Jonathan Hickman