Robert Downey Jr. unleashes first trailer for 'Avengers: Doomsday'

Brian Truitt, USA TODAYFri, April 17, 2026 at 12:33 AM UTC

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1 / 0Tom Hanks, Robert Downey Jr., more CinemaCon stars reveal their new moviesUS actor Robert Downey Jr. (L) joins directors Joe Russo, Anthony Russo and President of Marvel Studio Kevin Feige to promote "Avengers: Doomsday" during the Walt Disney Studios presentation at CinemaCon at The Colosseum at Caesars Palace on April 16, 2026 in Las Vegas, Nev.

Guys, Robert Downey Jr. and Chris Evans are fighting again.

Downey's Iron Man and Evans' Captain America tussled to superhero movie lovers' content 10 years ago in "Captain America: Civil War." They're butting heads on screen once more in the Marvel Cinematic Universe, but now Downey's under a very different mask.

At CinemaCon, the convention for movie theater owners, Downey was on hand to debut the first trailer for Marvel's "Avengers: Doomsday" (in theaters Dec. 18), which marks the Oscar winner's first appearance as the villainous Doctor Doom.

Director Joe Russo (center) tries to keep it civil between "Avengers: Doomsday" costars Robert Downey Jr. and Chris Evans at CinemaCon.

"What I want to do is give away, like, 37,000 spoilers right now. Should I, just for fun?" Downey said, teasing the crowd that gave him a standing ovation during his entrance. He added that Doom as a character is "wildly epic, to say the least."

Instead of reveals, Downey introduced fresh footage. While Disney didn't release it immediately online and to the public, those in attendance at CinemaCon offered up details on social media. Details apparently included an appearance by the Fantastic Four and a throwdown between Shang-Chi (Simu Liu) and Gambit (Channing Tatum), plus Thor (Chris Hemsworth) battling Doom and Captain America calling on Thor's hammer Mjolnir once more.

Evans joined Downey on the CinemaCon stage with some faux awkwardness.

"Hey, pal," Evans said. "Things are still a little tense," Downey quipped back.

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"I said I would only come back for a real reason, and in 'Doomsday' there is a very real reason that these superheroes need Steve Rogers," explained Evans, who bowed out of the MCU after 2019's "Avengers: Endgame."

"I love you, Downey, but this guy – I don’t like him," Evans joked about Doom.

"Those are fighting words," Downey added.

The all-star cast for "Doomsday" also includes Tom Hiddleston, Patrick Stewart, Ian McKellen, Vanessa Kirby, Ebon Moss-Bachrach, Joseph Quinn, Pedro Pascal, James Marsden, Anthony Mackie, Sebastian Stan, Letitia Wright , Tenoch Huerta Mejía, Winston Duke, Paul Rudd, Danny Ramirez, Wyatt Russell, Florence Pugh, David Harbour, Hannah John-Kamen and Lewis Pullman.

Disney also announced the launch of Infinity Vision, a new partnership between the studio and global cinemas to help audiences seek out the best theatrical experience. Infinity Vision will start with the September rerelease of "Endgame" and also will be available for "Doomsday."

Contributing: Brendan Morrow

This article originally appeared on USA TODAY: 'Avengers: Doomsday' reunites Robert Downey Jr. and Chris Evans

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