The first trailer for Avengers: Doomsday showcases a massive ensemble spanning three universes. The Thunderbolts* (New Avengers) include John Walker/US Agent (Wyatt Russell), Yelena Belova (Florence Pugh), Bob/Sentry (Lewis Pullman), Red Guardian (David Harbour), and Ghost (Hannah John-Kamen). The Fantastic Four feature Reed Richards (Pedro Pascal), Sue Storm (Vanessa Kirby), Ben Grimm (Ebon Moss-Bachrach), and Johnny Storm (Joseph Quinn). X-Men veterans appear: Charles Xavier (Patrick Stewart), Beast (Kelsey Grammer), Magneto (Ian McKellen), Mystique (Rebecca Romijn), Nightcrawler (Alan Cumming), and Cyclops (James Marsden), plus Gambit (Channing Tatum) and Xu Shang-Chi (Simu Liu).

Cameos include Steve Rogers (Chris Evans), Peggy Carter, Spider-Man (Tom Holland), Hawkeye (Jeremy Renner), Doctor Strange (Benedict Cumberbatch), Thor's daughter Love (India Rose Hemsworth), and Cassie Lang (Kathryn Newton). The trailer centers on an ominous Thor voiceover warning of an unprecedented threat, urging heroes to unite. It ends with Steve Rogers returning—still worthy of Mjölnir—hinting he may be the miracle needed.

Avengers: Doomsday hits theaters December 18, 2026. Avengers: Secret Wars follows December 17, 2027, concluding the MCU's Phase Six.