HOLR HIGHLIGHTS
The key details readers need to know.
- Robert Downey Jr. shared a new behind-the-scenes video connected to the Avengers: Doomsday presentation at D23.
- The footage gives fans another look at the massive Marvel event as Downey returns to the MCU as Victor Von Doom, not Tony Stark.
- Avengers: Doomsday brings together major characters from the Avengers, Fantastic Four and X-Men worlds.
- The film is currently set to hit theaters on December 18, 2026.
August 21, 2026
Robert Downey Jr. Shares Behind-the-Scenes Look at Avengers: Doomsday D23 Presentation
Robert Downey Jr. has given Marvel fans another look behind the curtain after sharing new behind-the-scenes footage from the Avengers: Doomsday presentation at D23.
The clip comes after one of the biggest Marvel presentations of the year, where Downey joined Chris Evans and Hayley Atwell as Avengers: Doomsday took the stage. Fans have already seen plenty of discussion around the new footage, but the behind-the-scenes video shows a different side of the moment — the people, the preparation and the atmosphere surrounding a presentation built around one of Marvel’s most anticipated films.
Bastidores da participação de Robert Downey Jr. e o elenco de “Avengers: Doomsday” na #D23.
📹 Robert Downey Jr. via Instagram. pic.twitter.com/GGjy0TBIBX
— Robert Downey Jr. BR (@RDJBrazil) August 21, 2026
And yes, seeing Downey back in the middle of a major Marvel event still hits differently.
This time, though, he’s not returning as Tony Stark.
He’s playing Victor Von Doom.
That is the part fans are still trying to wrap their heads around.
Downey spent more than a decade playing Iron Man, becoming one of the faces of the Marvel Cinematic Universe before Tony Stark’s story ended in Avengers: Endgame. Now he’s back in the MCU playing one of Marvel’s most famous villains, Doctor Doom. Marvel first confirmed his casting at San Diego Comic-Con in 2024, with Downey himself telling the crowd, “New mask, same task.”
What Happened at the D23 Avengers: Doomsday Presentation?
Avengers: Doomsday was one of the major Marvel talking points at D23, where new footage was shown and Downey, Evans and Atwell appeared as part of the presentation.
The footage put Doctor Doom firmly at the center of the conversation. Reports from the event described a darker look at the character and the destruction surrounding him, while the film continues to build toward a huge crossover involving characters from across different Marvel worlds. The Avengers, Fantastic Four and X-Men are all part of the larger picture.
RDJ/X
Downey’s new behind-the-scenes video now adds another layer to that moment. For fans, it isn’t just another promotional clip. It shows how much attention is surrounding his Marvel return.
Because no matter how many times Marvel says it, there is still one thing people can’t ignore: Robert Downey Jr. is back.
Just not in the role many people first knew him for.
Robert Downey Jr. Is Returning as Doctor Doom
Downey’s casting as Doctor Doom remains one of the biggest surprises in recent Marvel history.
Tony Stark and Victor Von Doom are completely different characters, and Marvel has made it clear that Downey is returning in a new role. That hasn’t stopped fans from coming up with theories, especially because the actor is so closely connected with Iron Man and the emotional ending of Endgame.
Recent Doomsday footage has also pushed Doctor Doom further into the spotlight, showing just how central he will be to the story. The character is being positioned as the major threat facing heroes from across the Marvel multiverse.
That’s what makes this return so interesting.
Marvel isn’t simply bringing back Robert Downey Jr. for a quick cameo or asking him to put the Iron Man suit back on. They’re giving him another major character and putting him at the center of the next Avengers movie.
For an actor whose MCU history is so tied to one hero, that’s a pretty wild move.
Why Avengers: Doomsday Is Such a Big Deal
The film has one of the biggest crossover lineups Marvel has attempted.
Characters from the MCU are set to collide with the Fantastic Four and returning faces from the X-Men franchise. The Russo brothers, Anthony and Joe Russo, are directing the film after previously directing Avengers: Infinity War and Avengers: Endgame.
Chris Evans is also returning to the MCU, while the huge cast includes names such as Chris Hemsworth, Pedro Pascal, Vanessa Kirby, Anthony Mackie, Paul Rudd, Florence Pugh, Patrick Stewart, Ian McKellen, James Marsden and more.
So when Downey shares something from behind the scenes of a D23 presentation, fans are obviously going to look closely.
Right now, Avengers: Doomsday is carrying the weight of a major Marvel comeback moment. It has familiar faces, characters from different generations of Marvel movies and Robert Downey Jr. stepping back into this universe in the most unexpected role possible.
The behind-the-scenes video may only be a glimpse of the presentation, but it reminds fans how big this project has become.
Robert Downey Jr. is back in Marvel. Chris Evans is back. The Avengers are heading toward another huge crossover. And this time, Downey isn’t the man trying to save the world. He may be the man everyone else has to stop.
Avengers: Doomsday is scheduled to arrive in theaters on December 18, 2026.
FAQs
Did Robert Downey Jr. share behind-the-scenes footage from the Avengers: Doomsday D23 presentation?
Yes. Downey shared a new behind-the-scenes video connected to the Avengers: Doomsday presentation, giving fans another look at the event.
Who does Robert Downey Jr. play in Avengers: Doomsday?
Robert Downey Jr. is playing Victor Von Doom, also known as Doctor Doom. He is not returning as Tony Stark/Iron Man.
Was Robert Downey Jr. at D23 for Avengers: Doomsday?
Yes. Downey appeared as part of the Avengers: Doomsday presentation alongside Chris Evans and Hayley Atwell.
When is Avengers: Doomsday coming out?
Avengers: Doomsday is currently scheduled for release on December 18, 2026.