Avengers: Doomsday | Official Teaser | Announcement

“New mask, same task.” Avengers: Doomsday. In theaters May 2026.

The MCU has just cast its Doctor Doom for the upcoming film Avengers: Doomsday, and it's...wait, Robert Downey Jr.?

At San Diego Comic-Con during the Marvel Studios panel, it was announced that Downey Jr. would be returning to the MCU not as Iron Man, but as Doctor Doom in Avengers 5, which is now known as Avengers: Doomsday. Downey Jr. made an appearance at the end of the panel flanked by Doom Bots, saying he'd "see you in two years" with Doomsday. The film is slated for May of 2026.

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Unfortunately, no one left the hall with a clear idea of how this is going to work. Is he somehow playing Tony Stark, aka Iron Man, who died (like really super died!) fighting Thanos in Avengers: Endgame? Is he a different guy who looks exactly like Tony Stark? Is he from one of the many many alternate earths? Who can say?

This is all Downey Jr. had to say about it: "New mask, same task. What can I tell ya? I like playing complicated characters.”

Weird as this may seem, the MCU has plenty of room for this sort of lookalike nonsense, so whatever's going on with this casting is almost certainly going to have a plot explanation beyond just wanting Downey Jr. around again.

At the same panel, we also learned that the Russo Brothers would be returning to the MCU to direct both Avengers: Doomsday and Avengers: Secret Wars, which is coming a year later in May of 2027.

Previously, Avengers 5 was expected to be called Avengers: The Kang Dynasty and focus on, well, Kang. There have since been rumors that Marvel would be pivoting from a Kang-centric phase to one focused on Dr. Doom, and it appears those rumors were true.

Are you excited to see Robert Downey Jr. return and become as Dr. Doom? Should they have cast someone new?

[danielgimnot]

Imagine they left it a surprise that doom was robert downey jr until in the movie theatres

[user_ytndslk]

All RDJ Characters: “I’m a dude, playing the dude, disguised as another dude!”

[avantyurnyy]

Dr. Doom and Loki have many things in common:
1. They both have a green suit.
2. They both can travel through time.
3. They both sought power and the throne, be it in Asgard or Latveria.
4. They both opposed the Avengers.
5. They both betrayed those who trusted them.
6. They are both outcasts by nature.
7. And both of their paths lead to the fate of the multiverse.

[Smasher]

Are you excited to see Robert Downey Jr. return to the MCU as Doctor Doom? Should they have cast someone new? 🤔💭

[avantyurnyy]

Just imagine Loki vs. Doom. It would be the most legendary fight in the entire MCU.

[nathanthompson]

Tony went from saving the world from the infinity sagas big bad to possibly becoming the multiverse sagas big bad

[ViktorL]

We got Robert Downey Jr. Returning to Marvel before GTA 6

[amanmakwana]

Spiderman to Dr.Doom :- Tony sir
Dr.Doom :- who are you?😂😂

[geekforeverpixelgamingsurl]

Honestly, as long as they don’t actually play on Dr Doom and Iron Man being played by the same person, I am more than fine with this choice of casting.

[vqtvvyu]

It's like watching American horror story where play by same actors but different characters

[AkshayLaxman]

They’re gonna make him do this till he’s NINETY !!!!

[drivjc]

And to think Deadpool referred to himself as "Marvel Jesus."

[rapipocudo]

Everyone is like: Wow its Robert playing as Doom!

Me, a DeadPool fan: Bro is getting paid a small contry's GDP

[fartisart]

I mean as long as he wears the mask and doesn't show his face (although we love his expressions and acting) it will be more than fine

[jemoney]

If they do not play All Caps by MF DOOM during the movie, WE RIOT!!

[trmr]

It would be such a missed opportunity to not use MF DOOM in the soundtrack

[JuneReed-zi]

Robert Downey Jr played/made Iron Man better than he ever was in the comics. Different mask, same task. Wow! Hope he can pull it off.

[rafeisbest]

That’s like human torch meeting captain America’s ❤

[alexgrey]

I mean..recycling actors in for a new role in a universe isn’t brand new (Chris Evans human torch-captain america) but usually it’s done because that IP failed and the audience wouldn’t really care because they didn’t connect with the characters anyway. When you have the juggernaut that is Ironman who was easily the most loved character in the avengers and the backbone of that entire franchise..they’ll REALLY have to write him well to truly disassociate his personality with Tony stark. That being said…it’s RDJ..he could make a McDonald’s commercial Oscar worthy

[namikaze_minato]

"New mask, same task"
-lord Von doom(Rdj)