Avengers: Doomsday Star Robert Downey Jr. On MCU Return As Doctor Doom: "There's Been Some Experimentation"

Avengers: Doomsday Star Robert Downey Jr. On MCU Return As Doctor Doom: "There's Been Some Experimentation"

In a new interview, Avengers: Doomsday star Robert Downey Jr. discusses his MCU return as a completely new character, the villainous Victor Von Doom...

By MarkCassidy - Jun 17, 2026 10:06 AM EST
Filed Under: Avengers: Doomsday

Although the majority of fans now seem to be on board, the initial announcement that Robert Downey Jr. would be returning to the MCU as an entirely different character after playing Tony Stark for so many years was met with a mixed response.

We still don't know exactly how this new big-screen take on the classic villain will be depicted in Avengers: Doomsday, but rumor has it that Downey Jr. is playing the Victor Von Doom, and not an evil Stark variant.

Why does he look so much like the late Armored Avenger? Apparently, his resemblance to the fallen hero won't actually come into play - at least, not in this movie.

While speaking to CBR, Downey confirmed that they are doing "something different" with the character.

"A lot of it has been… there's some experimentation," said the Oppenheimer star. "We've had our moments of, 'Let's shift here.' But we landed in a place that I think will more than suffice. And it's not even about how I executed it. It's about the way it's been structured, and the other characters."

Expectations are high for Doomsday and Avengers: Secret Wars, especially after the massive success and popularity of The Russo Bros.' previous MCU movies and what many consider to be a largely disappointing run of Multiverse Saga films.

"There's something going on in Doomsday and forward that is literally the only antidote to, 'How do you not have these films be let down after an Infinity War and an Endgame?' And boy, have we labored long and hard to bring that down," RDJ went on.

"I'm quite odd in that I try to stay as removed from a subjective experience of things as I can," he explained. "So I try to think like the brothers. I try to feel like I'm in the writing room. I try to feel all that stuff. But eventually, there are so many big shoes to step into that I just have to go, 'What hasn't been done as well as it can be done yet?' We're always looking for that opportunity."

Co-director Joe Russo also addressed fans' expectations, revealing that Doomsday will have a "lot of surprises," while describing the next major MCU event as "the most mature" of all of the Russos' Marvel movies.

"The stakes keep going up. But, emotional complexity is always the answer," Russo said. "You bring emotional complexity to anything, and it enriches it. It makes it a fuller experience for the audience. It surprises you. There are a lot of surprises in this. And I think [Doomsday is] the most emotionally complex of all of them. And in a lot of ways, the most mature of all of them.”

Russo also expressed his excitement to collaborate with Downey again.

“We've been very fortunate enough as collaborators, Robert and I, to be able to do this over and over again. And, knock on wood, we can do it two more times.”

We assume he means Doomsday and Secret Wars, but there's speculation that the filmmaker is hinting at a couple of post-Secret Wars projects here.

Avengers: Doomsday and Avengers: Secret Wars were hit with significant delays last year, with Doomsday now set to arrive in theaters on December 18, 2026, and Secret Wars positioned for December 17, 2027.

Both movies will be directed by the Russo brothers, who also make their MCU return after helming Captain America: The Winter Soldier, Captain America: Civil War, Avengers: Infinity War and Avengers: Endgame.

"Being able to create stories and explore characters within the Marvel Universe fulfilled a life-long dream of ours, and we discovered a powerful connection with audiences in each film that we made. We’re thrilled to collaborate once again with Kevin, Lou and the entire Marvel team to bring this epic adventure in storytelling to new and surprising places for both the fans and ourselves”, said The Russos in a statement after the SDCC panel.

Doomsday will star:

Paul Rudd as Ant-Man, Simu Liu as Shang-Chi, Tom Hiddleston as Loki, Lewis Pullman as Sentry, Florence Pugh as Yelena, Danny Ramirez as Falcon, Ian McKellen as Magneto, Sebastian Stan as Bucky, Winston Duke as M’Baku, Chris Hemsworth as Thor, Kelsey Grammer as Beast, James Marsden as Cyclops, Channing Tatum as Gambit, and Wyatt Russell as U.S. Agent

Along with Vanessa Kirby as Sue Storm, Rebecca Romijn as Mystique, Patrick Stewart as Professor X, Alan Cumming as Nightcrawler, Letitia Wright as Black Panther, Tenoch Huerta Mejia as Namor, Pedro Pascal as Reed Richards, Hannah John-Kamen as Ghost, Joseph Quinn as Johnny Storm, David Harbour as Red Guardian, Ebon Moss-Bachrach as The Thing, Anthony Mackie as Captain America, and, of course, Robert Downey Jr. as Doctor Doom.

About The Author:
MarkCassidy
Member Since 11/9/2008
Mark Cassidy is a writer, photographer, amateur filmmaker, and Rotten Tomatoes-approved critic from Dublin, Ireland.
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bobevanz
bobevanz - 6/17/2026, 10:18 AM
TheVisionary25
TheVisionary25 - 6/17/2026, 10:25 AM
Interesting comments , not sure if I fully grasp some of them without context so December can’t come fast enough…

However I do agree with Downey to an extent in that pretty much anything after the likes of IW & EG would always feel like a let down for some or atleast the GA so I’m intrigued to see how they have seemingly addressed that and created an apparent antidote to it moving forward.

Anyway , I still have my reservations about RDJ playing Dr Doom (especially in regards to the longevity of the character post SW) but there’s no denying that the man is one of the best actors we have so I have gut feeling his performance & version of the character is truly gonna be special!!.

User Comment Image
OgHerManM
OgHerManM - 6/17/2026, 10:37 AM
I like RDJ but sometimes he talks too much
theBlackSquare
theBlackSquare - 6/17/2026, 10:59 AM
@OgHerManM - I know right? Yapping on for TWO whole paragraphs
Dcmarvel2025
Dcmarvel2025 - 6/17/2026, 10:40 AM
Calling it now rdj won't be doom it's all a ploy, the real doom with be Steve Rogers, he's the real doom, was the mastermind from day one, he's always been evil and that's why we didn't see dooms face, rdj comes back as iron man and the two face off in brutal combat, just as iron man is about to defeat doom thanos arrives and they have a marvellous marvel spit roast
FireGunn
FireGunn - 6/17/2026, 10:48 AM
"Experimentation" meaning this character is nothing like the one you all know and love, which is why this is one of the worst casting decisions ever. I'm calling it now, this film will be an underperformance with its 500 million dollar budget AND it'll be fanservice slop of the highest order.

Reboot the MCU and DCU
FleischerSupes
FleischerSupes - 6/17/2026, 10:59 AM
Poor dude is giving it all he's got and he's on a losing team. Not that there's a winning team either.

User Comment Image
narrow290
narrow290 - 6/17/2026, 11:13 AM
Yeah, his casting was an act of pure desperation. I don’t care what nobody says
SheepishOne
SheepishOne - 6/17/2026, 11:27 AM
I’m so fckn curious to see what they do with him. Can’t wait for December, and I love that we haven’t seen much of anything yet. One of my moviegoing highlights was going into Endgame totally blind. Didn’t even watch a trailer and somehow wasn’t spoiled for anything. That’s the way to watch these.

The Bros treating Doomsday as a direct sequel to Endgame is the right move. We’re gonna see some cool shit.

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