Avengers: Doomsday Star Robert Downey Jr. Reveals Who He Prefers Playing: Iron Man Or Doctor Doom

Avengers: Doomsday Star Robert Downey Jr. Reveals Who He Prefers Playing: Iron Man Or Doctor Doom

Robert Downey Jr. returns to the MCU in Avengers: Doomsday, and the actor has now revealed whether he prefers playing the villainous Doctor Doom or the Armored Avenger, Iron Man.

By JoshWilding - Aug 17, 2026 09:08 AM EST
Filed Under: Avengers: Doomsday

Robert Downey Jr. helped launch the Marvel Cinematic Universe in 2008 when he played Iron Man's Tony Stark. The actor became the face of the franchise in the years that followed, and bid farewell to the role in 2019 when Tony made the ultimate sacrifice in Avengers: Endgame.

We thought that was it for Downey in the MCU, but at San Diego Comic-Con in 2024, he was revealed as Doctor Doom in this December's Avengers: Doomsday and next year's Avengers: Secret Wars.

It's not uncommon for actors in the MCU to take on different roles—Gemma Chan played Minn-Erva in Captain Marvel and later took on the role of Sersi in Eternals, for example—but given the extent of Downey's Marvel role, speculation has swirled about Tony and Victor Von Doom being connected. As far as we're aware, that's not the case, and the Oscar-winner is simply playing Earth-828's Doom.

Talking to Good Morning America at D23, Downey was asked who he now prefers playing: Iron Man or Doctor Doom.

"It was really weird being the guy — everyone else is hanging out, they’re the good heroes, and I’m [in] this mask and this hood. I’m like, 'They’re all on one side of the camera, and I guess they’re all mad at me or something,'" he recalled. "But I’ll say this: getting to know [Hayley Atwell] better, all of [mine and Chris Evans’] history, because you’re a legit dude."

"Because you don’t say yes because you can; it has to feel right. And I think that in Doomsday, what happens with this key relationship is so exciting and unexpected and beautiful," Downey continued. "I will say Doom, for now, because I got to really observe what I’ve been missing the whole time, just everybody else."

It's fascinating to hear how playing a villain changed the actor's experience on set, especially as being behind a mask is a (mostly) new experience for Downey. 

Iron Man was brought to life primarily through visual effects, and Tony spent a lot of time without his mask on in the Iron Man and Avengers franchises. Doom's face, in contrast, is expected to remain hidden behind a mask for the entirety of Avengers: Doomsday.  

You can hear more from Downey, Evans, and Atwell on Avengers: Doomsday in the Instagram post below.

In Avengers: Doomsday, beloved heroes from three distinct universes will be set on a deadly collision course and face an existential threat unlike anything they’ve ever encountered.

Avengers: Doomsday stars Chris Evans, Chris Hemsworth, Anthony Mackie, Winston Duke, Tom Hiddleston, Sebastian Stan, Letitia Wright, Paul Rudd, and Robert Downey Jr. Wyatt Russell, Simu Liu, Tenoch Huerta Mejia, Mabel Cadena, Florence Pugh, Danny Ramirez, David Harbour, Hannah John-Kamen, Lewis Pullman, India Rose Hemsworth, and Wesley Holloway all make their Avengers franchise debuts.

The Fantastic Four: First Steps leads Pedro Pascal, Vanessa Kirby, Ebon Moss-Bachrach, and Joseph Quinn join them, as do X-Men franchise stars Kelsey Grammer, Patrick Stewart, Ian McKellen, Alan Cumming, Rebecca Romijn, James Marsden, with Deadpool & Wolverine star Channing Tatum. 

The Russo Brothers direct Avengers: Doomsday and Avengers: Secret Wars from a screenplay by Stephen McFeely, with whom they previously collaborated on the Avengers and Captain America franchises. The movie is produced by Kevin Feige, Louis D'Esposito, and Jonathan Schwartz, with Callum McDougall serving as executive producer.

Avengers: Doomsday is set to be released on December 18.

About The Author:
JoshWilding
Member Since 3/13/2009
A lifelong comic book fan who grew up on Spider-Man: The Animated Series in the '90s, Josh Wilding has been contributing to ComicBookMovie.com since 2009.

While he's also written for websites like Batman-News, HeyUGuys, and WhatCulture, Josh is CBM's Rotten Tomatoes-approved critic and the site's #1 contributor with nearly two decades of experience covering film and TV news (including interviews with Tom Holland, Chris Pratt, Gary Oldman, Halle Berry, Jon Bernthal, Tom Welling, and hundreds more).

Based in the UK with his wife, Josh is also an avid WWE and Formula 1 fan and writes about those passions on CBM's sister sites, TheRingReport.com and FullThrottleHQ.com. Favourite superhero? Spider-Man. Favourite pro wrestler? CM Punk. Favourite F1 driver? Max Verstappen.
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Malatrova15
Malatrova15 - 8/17/2026, 9:22 AM
He reveals so good
Nonameforme
Nonameforme - 8/17/2026, 9:25 AM
They shouldn't have revealed doom until the movie dropped
Urubrodi
Urubrodi - 8/17/2026, 9:27 AM
@Nonameforme - a bit impossible to promote a movie centered in a villain without showing said villain, especially when you have such a big name actor playing him
UnderBelly
UnderBelly - 8/17/2026, 9:43 AM
@Nonameforme - As a viewer, it would have been incredible to go into the film with no prior knowledge of Robert Downey Jr.'s return and experience the reveal at the exact moment the mask comes off. However, from Disney and Marvel's perspective, keeping it a secret until release would have been a major commercial risk. The MCU had been experiencing declining audience enthusiasm, and announcing RDJ's return in 2024 instantly generated excitement, headlines, and renewed interest in the franchise. It also had the added benefit of shifting attention away from the uncertainty surrounding Kang and Jonathan Majors.

It's somewhat unfortunate, because it appears the Russos are intentionally structuring the story so that Doctor Doom's unmasking and the characters' reactions occur within the film itself rather than through the marketing campaign. Had audiences been completely unaware of the casting, the reveal could have become one of the most memorable moments in blockbuster cinema. The shock factor alone would likely have fuelled enormous word of mouth, social media discussion, and strong holiday box office legs. That said, relying on a surprise of that magnitude to drive ticket sales would have been a significant gamble.

There's also the financial reality to consider. RDJ's return almost certainly came at a premium, so it makes sense that Disney would maximise the value of that investment by making him the centrepiece of the marketing campaign. He has been front and centre of the promotional effort from the outset, helping to rebuild anticipation and confidence in the MCU. In the end, while the artistic choice may have been to preserve the surprise, the decision to reveal his casting early was ultimately a business one.
FireGunn
FireGunn - 8/17/2026, 10:04 AM
@UnderBelly - That's what desperation looks like
UnderBelly
UnderBelly - 8/17/2026, 10:13 AM
@FireGunn - Maybe, but it's a moving train....they had to pivot and make a sound business choice. Yeah yeah, they always says its for the fans, but at the end of the day, if we're not putting money in their pockets, they stop doing what they do...then we all lose.
Nonameforme
Nonameforme - 8/17/2026, 10:33 AM
@Urubrodi - fincher did it and seven is legendary
Nonameforme
Nonameforme - 8/17/2026, 10:34 AM
@UnderBelly - they're worth billions. They'd have been on
IAmAHoot
IAmAHoot - 8/17/2026, 10:34 AM
@Nonameforme - Come on. Have you seen how nuts people have been going since the last two trailers?
UnderBelly
UnderBelly - 8/17/2026, 10:38 AM
@Nonameforme - Have you been following the reception (financial and critical) of the majority of the multiverse saga?

Most of their financial deals are made on projection based off past performances....and the last few phases have not been doing the numbers they wanted. They're in it to make as much money as possible...if you don't spend, you don't make...

BUT as audience member, i would also have loved it to remain a suprise reveal.
Nonameforme
Nonameforme - 8/17/2026, 10:40 AM
@UnderBelly - ok
FireGunn
FireGunn - 8/17/2026, 11:09 AM
@UnderBelly - They're a multi billion dollar company. Spare me the "Won't you think of the profits" nonsense lmao
UnderBelly
UnderBelly - 8/17/2026, 11:18 AM
@FireGunn - LMAO, that how billion $ companies stay billion $ companies.
FireGunn
FireGunn - 8/17/2026, 11:19 AM
@UnderBelly - Sure, doesn't make it any less desperate.
UnderBelly
UnderBelly - 8/17/2026, 11:27 AM
@FireGunn - I think Disney stopped worrying about being desperate about 4 Toy Story's ago and from the recent news, 5 "Pirates" movies ago.

They'll still get your money some how.
FireGunn
FireGunn - 8/17/2026, 11:29 AM
@UnderBelly - You got that right lol. Can't say I'm surprised but it would've been an incredible reveal
Urubrodi
Urubrodi - 8/17/2026, 11:31 AM
@Nonameforme - Yeah but then you are comparing original work with existing popular IP, it's different. You promote existing IP by focusing on characters people like not by pretending they are not part of the movie.
Nonameforme
Nonameforme - 8/17/2026, 11:32 AM
@Urubrodi - that's very weird
UnderBelly
UnderBelly - 8/17/2026, 11:34 AM
@FireGunn - For sure! Like i said, i would have loved to have that suprise moment in a cimena with a first time viewing audience.

It certainly would have topped the Cap moments in Endgame with the Mjolnir lift, "On your left" and the "Assemble" moment.

Crazy how good those callbacks were and getting them only within 5 minutes of each other.
MotherGooseUPus
MotherGooseUPus - 8/17/2026, 11:51 AM
@UnderBelly - that would have been one of, if not the Biggest surprise/reveal/Holy Shit moments in a theater, ever... but all your business/financial points make 100% sense. but man, that would have been f*cking mind blowing
ModernAudience
ModernAudience - 8/17/2026, 9:37 AM
I like Hailey off ozempic
NoDaysOff
NoDaysOff - 8/17/2026, 9:53 AM
@ModernAudience - And i'm sure instead of a 0% chance, you'll stand a 0.01% chance ON ozempic....to maybe get close enough to smell her hair. :-P

Crazy how we objectify peoples' (especially womens) bodies.

But daym she fine!
SauronthePower
SauronthePower - 8/17/2026, 2:35 PM
@NoDaysOff - this ☝️ may actually be The Comment of the Year here on CBM
ModernAudience
ModernAudience - 8/17/2026, 3:23 PM
@NoDaysOff - why would I want to smell her hair, you incel? 😂 Creepy bro.
ModernAudience
ModernAudience - 8/17/2026, 3:24 PM
@NoDaysOff - she's fine like this but women also need to know they're fine with the extra cushion too.


Now I wanna smell her hair....thanks a lot. Am I an incel?
NoDaysOff
NoDaysOff - 8/25/2026, 2:45 PM
@ModernAudience - 😂
OneMoreTime
OneMoreTime - 8/17/2026, 9:54 AM
Avengers: Doomsday needs to be Compared to Infinity War NOT

Avengers: Endgame that will be Avengers Secret Wars.
IAmAHoot
IAmAHoot - 8/17/2026, 10:36 AM
Those last 40 or so minutes of Oppenheimer were exhilarating as all get out; and Downey as the sudden antagonist was a huge reason why. Heck it got him Dr. Doom.
SauronthePower
SauronthePower - 8/17/2026, 2:36 PM
@IAmAHoot - he played that role to absolute perfection
SADFFLECK
SADFFLECK - 8/18/2026, 12:27 AM
@IAmAHoot - Still a Lame casting.
IAmAHoot
IAmAHoot - 8/18/2026, 12:57 AM
@SADFFLECK - Yes, we get you’re sad.
bobevanz
bobevanz - 8/17/2026, 11:16 AM
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TheVisionary25
TheVisionary25 - 8/17/2026, 11:32 AM
RDJ really is showing why he is one of if not the greatest actor in Hollywood atleast since so far ,. There really is almost no inkling of Tony in his performance as Victor Von Doom…

It obviously helps he is pretty much covered head to toe in the footage we have seen but the voice is pretty much unrecognizable (there is some slippage but rare) and he even has green eyes which i thought was a cool touch.

User Comment Image

I really can’t wait to see more of him in that role!!.
dragon316
dragon316 - 8/17/2026, 2:19 PM
Feel right my ass he did it for pay check
Nomis929
Nomis929 - 8/18/2026, 4:13 PM
User Comment Image

“I’m a Doom, playin’ a Doom, disguised as another Doom.”

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