With only four short teasers and some concept art, Marvel Studios has kept official looks at Avengers: Doomsday, which arrives in theaters December 18th, to a minimum.
That’s all about to change, however, as it has been widely believed for some time that the first full teaser trailer for the Russo brothers next installment in the MCU’s Avengers franchise would be revealed at San Diego Comic Con. With Marvel Studios confirmed to be taking the Hall H stage on July 25, 2026, from 5:30 p.m. to 6:30 p.m. PT, a recent report from industry insider Daniel Richtman indicated that the first teaser had begun dubbing the trailer. Now, on the heels of that report comes a rumored description of what to expect from the first extended look at the film.

The trailer begins with a shot of Doom on a throne in Latveria. Doom walks through his castle, and they show a huge painting depicting his wife and son.
Thor arrives with the Fantastic Four to meet the New Avengers. There is a shot of them flying their ship into their tower. The teams get acquainted.
Steve meets Thor, and he summons the hammer to himself and proves that it’s him, because Thor doesn’t believe him. Thor says, “That’s impossible.” Steve meets Yelena and tells her that Natasha was family to him, which means she is his family too.
In a fight between Yelena and Yelena, Mystique’s transformation is shown.
A shot in the Baxter Building with the X-Men. A shot of Reed Richards talking to Doom; Reed is practically yelling at him, saying, “Answer me.” A shot of Loki in his TVA suit in Steve’s house from the first teaser.
The main scene of the trailer is the battle between Thor and Doctor Doom, where Thor throws Stormbreaker at Doom, and he easily stops it with a single movement of his hand. The trailer ends with a shot where Doom is controlling the Sentinels.
Doom’s final line: “One day you will forgive me.”

While fans continue to find reasons to bash the upcoming film online, you can expect plenty of excitement to take over once the idea of the Avengers, Fantastic Four and X-Men sharing the screen for the first time becomes a reality.

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