Avengers: Doomsday Trailer Teases Explosive Marvel Battles including Avengers Clash With the X-Men
Marvel Studios reportedly unveiled the first exclusive footage from Avengers: Doomsday during CinemaCon 2026, teasing a massive Multiversal conflict that could unite — and divide — some of Marvel’s biggest heroes. While the trailer has not officially been released online, multiple attendee reports describe a darker and more crossover-heavy film centered around Doctor Doom and the collision of different universes.
One of the trailer’s biggest reveals was the first proper look at Robert Downey Jr. as Doctor Doom. According to reports, Doom warns of an incoming Multiversal disaster before confronting Thor in a sequence that immediately establishes him as a terrifying threat. The footage reportedly shows Chris Hemsworth’s Thor attacking Doom with Stormbreaker, only for Doom to stop the strike effortlessly with one hand.
Reported Fights Shown in the CinemaCon and confirmed others
| Fight Sequence | What Happens | Why It Matters |
|---|---|---|
| Thor vs Doctor Doom | Doom effortlessly blocks Thor’s Stormbreaker attack with one hand | Establishes Doom as an overwhelmingly powerful villain |
| Shang-Chi vs Gambit | The two heroes clash inside the X-Mansion amid Multiversal confusion | Teases MCU mutants fully entering the spotlight |
| Mystique vs Yelena Belova | Mystique shapeshifts into Yelena during combat | Creates a psychological “mirror-match” fight |
| Nightcrawler vs Reed Richards | Teleportation abilities collide with Reed’s elastic powers | Could become one of the film’s most creative action scenes |
Another standout moment reportedly featured Simu Liu’s Shang-Chi battling Channing Tatum’s Gambit inside the X-Mansion. Shang-Chi uses the glowing Ten Rings against Gambit’s explosive playing cards. Reports describe the fight as part of the growing distrust caused by Multiversal incursions, with both characters seemingly believing the other side could be responsible for the chaos.
The trailer also reportedly revealed Rebecca Romijn making her official MCU appearance as Mystique. She is said to battle Florence Pugh’s Yelena Belova, who is reportedly leading the New Avengers team. During the fight, Mystique uses her shapeshifting powers to transform into Yelena herself, creating an intense and unsettling face-off between the two characters.
Back in May 2025, Cumming seemingly revealed that his mutant character would battle the Fantastic Four leader, even joking that he hit “Pascal against the head” during filming. The clash could become one of the movie’s most visually unique battles, combining Nightcrawler’s teleportation and sword combat with Reed Richards’ stretching abilities and durability.
Avengers: Doomsday will bring together heroes from multiple universes, including the Avengers, Fantastic Four, Wakandans, New Avengers, and classic X-Men characters. Avengers: Doomsday is currently scheduled to release on December 18, 2026.
