According to ComicBookMovie.com, it is heavily rumored that the first Avengers: Doomsday trailer will debut before Avatar: Fire and Ash, set to release next Thursday.
Avengers: Doomsday

According to the article, the trailer has been sent to theaters. However, it is “locked,” meaning that it cannot be viewed or leaked in advance despite already being rated in Brazil. A new trailer for The Mandalorian and Grogu has also been sent to theaters and is expected to be released online next week.
“Avengers: Doomsday” is the fifth Avengers film. It’s directed by the Russo Brothers and will be in theaters on May 1, 2026. “Avengers: Secret Wars” will follow on May 7, 2027.

The following actors were revealed as cast during a record-breaking livestream back in May:
- Chris Hemsworth (Thor)
- Vanessa Kirby (Sue Storm / Invisible Woman)
- Anthony Mackie (Sam Wilson / Captain America)
- Sebastian Stan (Bucky Barnes / Winter Soldier)
- Letitia Wright (Shuri / Black Panther)
- Paul Rudd (Scott Lang / Ant-Man)
- Wyatt Russell (John Walker / U.S. Agent)
- Tenoch Huerta Mejía (Namor)
- Ebon Moss-Bachrach (Ben Grimm / The Thing)
- Simu Liu (Shang-Chi)
- Florence Pugh (Yelena Belova / Black Widow)
- Kelsey Grammer (Hank McCoy / Beast)
- Lewis Pullman (Bob Reynolds / Sentry)
- Danny Ramirez (Joaquin Torres / Falcon)
- Joseph Quinn (Johnny Storm / Human Torch)
- David Harbour (Alexei Shostakov / Red Guardian)
- Winston Duke (M’Baku)
- Hannah John-Kamen (Ava Star / Ghost)
- Tom Hiddleston (Loki)
- Patrick Stewart (Professor X)
- Ian McKellen (Erik Lehnsherr / Magneto)
- Alan Cumming (Kurt Wagner / Nightcrawler)
- Rebecca Romijn (Raven Darkhölme / Mystique)
- James Marsden (Scott Summers / Cyclops)
- Channing Tatum (Remy LeBeau / Gambit)
- Pedro Pascal (Reed Richards / Mr. Fantastic)
- Robert Downey Jr. (Doctor Doom)
The actors are listed above with their known characters, but given the multiverse nature of recent Marvel Cinematic Universe stories, it’s always possible the actors could take on different roles. We already knew Robert Downey Jr. is returning to the MCU after Tony Stark / Iron Man died in Avengers: Endgame.This Time, Downey Jr. will play Doctor Doom, though there is a connection between Doom and Iron Man.
Chris Evans will also return to the MCU in some capacity for the film after seemingly retiring from the role of Steve Rogers / Captain America. After living out a life in the past, Rogers gave up the Captain America mantle to Sam Wilson. Evans made a cameo in Deadpool & Wolverine as Johnny Storm from Fox’s Fantastic Four films. We don’t know which character, if either, he will portray or what universe the character will be from. Hayley Atwell will reprise her role as Agent Peggy Carter but again, we don’t know if she will be from the MCU’s main universe (Earth-616) or an alternate universe.
Avatar: Fire and Ash

The third film in the Avatar franchise will debut a new clan of Pandorans, the Ash People. Avatar: Fire and Ash will release exclusively in theaters worldwide in IMAX 3D, Dolby Cinema 3D, RealD 3D, Cinemark XD, 4DX, ScreenX, and premium screens on December 19, 2025.
James Cameron returns to direct the adventure film, with the cast including Sam Worthington as Jake Sully and Zoe Saldaña as Neytiri, alongside Sigourney Weaver, Stephen Lang, Oona Chaplin, Cliff Curtis, Britain Dalton, Trinity Bliss, Jack Champion, Bailey Bass, and Kate Winslet. David Thewlis and Michelle Yeoh have also joined the cast.
Watch the trailer below:
Do you hope to see the Avengers: Doomsday trailer when viewing Avatar: Fire and Ash? Let us know in the comments and on social media.
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