AVENGERS: DOOMSDAY Star Robert Downey Jr. Flexes His Muscle (Suit) From The Set In New BTS Photo

AVENGERS: DOOMSDAY Star Robert Downey Jr. Flexes His Muscle (Suit) From The Set In New BTS Photo

Robert Downey Jr. has shared a new photo from the set of Marvel Studios' Avengers: Doomsday, and it looks like he's packed on some bulk to play the legendary villain...

By MarkCassidy - May 13, 2025 03:05 PM EST
Filed Under: Avengers: Doomsday

Cameras are now rolling on Avengers: Doomsday (without a completed script, by all accounts), and star Robert Downey Jr. has taken to social media to share a new photo from the set.

The Oppenheimer Oscar-winner is clearly not in full costume as Victor Von Doom here, but he does appear to be wearing at least part of his undersuit as he sits reading co-star Jeremey Renner's new book. RDJ is also flexing his bicep, and it looks like he's bulked up somewhat to play the iconic villain... With some help from extra padding!

If you look closely, you'll also notice some red dots on Downey's head and face, which may confirm that VFX will be used for either Doom's mask or possibly his disfigured face.

Check out the photo at the link below.

Ever since we first learned that Downey Jr. would be making his return to the Marvel Cinematic Universe as Doctor Doom in Avengers: Doomsday, fans have wondered whether the actor would play an evil Multiversal variant of Tony Stark or the actual Victor Von Doom.

According to a recent rumor from scooper MTTSH, Doom is not a Stark variant, and simply bears a striking resemblance to the late Avenger. Apparently, the villain will use this to "present himself as an ally to the MCU."

This would appear to back up previous plot rumors that Doom will lead an evil group of Avengers that come from another earth, initially posing as allies to help prevent more incursions. It's also been said that "the entire point of creating these characters that reflect the original line-up, is because they'll be facing off against each other."

Here's what co-director Anthony Russo had to say when asked how Downey Jr. can return to the MCU as a completely new character during a recent interview.

"We can’t explain that as it’s part of the story. But there’s nobody else in the world who could play this character the way he’s about to."

Avengers: Doomsday arrives in theaters on May 1, 2026, followed by Avengers: Secret Wars on May 7, 2027. Both films 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.

You can check out the full (for now) Doomsday cast list below.

• 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

• Wyatt Russell as U.S. Agent

• 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

• Robert Downey Jr as Doctor Doom

• Ebon Moss-Bachrach as The Thing

• Anthony Mackie as Captain America

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Irregular
Irregular - 5/13/2025, 3:02 PM
Looks like the mask will be CGI it seems.
Pictilli
Pictilli - 5/13/2025, 3:09 PM
@Irregular - and we will get a bunch of HUD shots of his face up close in the Doom suit

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HashTagSwagg
HashTagSwagg - 5/13/2025, 3:11 PM
@Irregular - Hopefully it's nano tech aswell.
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McMurdo
McMurdo - 5/13/2025, 3:05 PM
"and it looks like he's bulked up somewhat to play the iconic villain."

Hate to break it ya Joshy but that's quite literally a muscle suit.
JoshWilding
JoshWilding - 5/13/2025, 3:09 PM
@McMurdo - I didn’t write this article, pal - and I have eyes, so can clearly see it’s a muscle suit.
ProfessorWhy
ProfessorWhy - 5/13/2025, 3:16 PM
@JoshWilding - lol! Plus it clearly states that it's a muscle suit in the headline. Ronald McMurdo strikes again
McMurdo
McMurdo - 5/13/2025, 3:18 PM
@ProfessorWhy - yet: "and it looks like he's bulked up somewhat to play the iconic villain"

Except no bulk.
McMurdo
McMurdo - 5/13/2025, 3:22 PM
@JoshWilding - Josh. Forgive me bud. I have failed you and I have failed this community. I need a coffee.
ProfessorWhy
ProfessorWhy - 5/13/2025, 3:22 PM
@McMurdo - I forgive you
McMurdo
McMurdo - 5/13/2025, 3:34 PM
@ProfessorWhy - I know you do 😀
JoshWilding
JoshWilding - 5/13/2025, 3:48 PM
@McMurdo - User Comment Image
sully
sully - 5/13/2025, 5:19 PM
@McMurdo - The average person also has no clue what "bulked up" seems to mean. People thought Gal was "bulked up" for Wonder Woman and her build was average at best.
Pictilli
Pictilli - 5/13/2025, 3:08 PM
Nice plushy muscle suit
harryba11zack
harryba11zack - 5/13/2025, 3:12 PM
no folds? phucking hell, its a better soup suit then the soup suit.
SteviesRightFoo
SteviesRightFoo - 5/13/2025, 3:23 PM
Being one of these Hollywood fruitcakes would be horrible. There is 0 authenticity in that world
Goldboink
Goldboink - 5/13/2025, 4:00 PM
@SteviesRightFoo -
What the hell are you doing on a Hollywood Movie site if you disrespect them so completely?
Rosraf
Rosraf - 5/13/2025, 5:50 PM
@SteviesRightFoo - We are all in awe of your inferred authenticity and non-fruitcakeness.
THEDARKKNIGHT1939
THEDARKKNIGHT1939 - 5/13/2025, 3:29 PM
He's going to have a nanotech mask isn't he? Please no.
PC04
PC04 - 5/13/2025, 4:20 PM
@THEDARKKNIGHT1939 - Oh god I hope not. Doom's mask should not ever be nanotech. It's design doesn't lend itself to event he possibility it could be. It's too brutal.
TheVisionary25
TheVisionary25 - 5/13/2025, 3:31 PM
Damn , good on him for having bulked up for the role even though he’s likely gonna be buried under armor as Doom….

Reminds me of Iron Man 2 and how muscled up he was in that.

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I’m assuming the dots on his face are for the mask but I hope it’s for the disfigurement tbh so they can make it as gnarly as possible.

Also love how much fun RDJ is having with this role given the Doom image & caption in the back!!.
EarlChai
EarlChai - 5/13/2025, 4:15 PM
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TheLobster
TheLobster - 5/13/2025, 4:42 PM
Nanotech mask? Muscle suit? Ugh this is the exact type of shit I didn’t want..
AllsNotGood
AllsNotGood - 5/13/2025, 4:49 PM
I'd be very surprised if I like him as doom

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