- Primary Subject: David Harbour’s Avengers: Doomsday dialogue tease
- Key Update: David Harbour sparked massive fan debate after playfully reciting the out-of-context line when asked for an Avengers: Doomsday quote.
- Status: Confirmed
- Last Verified: August 20, 2026
- Quick Answer: It is likely an intentional joke or misdirect given Marvel's strict secrecy, though it could hint at a meta-joke or multiverse mix-up.
David Harbour recently teased a shocking Doctor Doom line in the upcoming Avengers: Doomsday, but is it really a spoiler for the film?
Fans have been looking forward to the MCU crossover event film that will merge the worlds of the 616 heroes, the Fantastic Four from Earth-828, and the X-Men from the Fox universe, as well as the return of Robert Downey Jr., who will play Doctor Doom this time around.
However, with Downey's appearance, it looks like the film will reference his previous iconic role.
David Harbour Reveals One of His Lines in Avengers: Doomsday
In an interview with Variety, David Harbour, who will return as the Red Guardian, was asked to recite one of the lines that he will say in Avengers: Doomsday.
He responded in a deadpanner and manner and with a Russian accent, "You… are Tony Stark.
This prompted fans to speculate that Harbour's alleged line might be a reference to how Doctor Doom looks like Tony Stark, given that he is also going to be portrayed by Downey.
However, some have also speculated that Harbour might just be joking and offered a false response since he is not allowed to mention any spoilers about the film, given how strict Marvel is.
Nevertheless, it is an intriguing tease from the Avengers: Doomsday star, and fans online are now debating how they should interpret his tease, whether he was actually saying his line or he was just kidding around.
If the line ends up being true, it is an indication that the film will reference how Doctor Doom has a physical resemblance to Tony Stark.
What to Expect in Avengers: Doomsday
Avengers: Doomsday follows beloved heroes from three distinct universes as they’re set on a deadly collision course and face an existential threat unlike anything they’ve ever encountered.
The star-studded cast includes Robert Downey Jr., Pedro Pascal, Vanessa Kirby, Joseph Quinn, Ebon Moss-Bachrach, Chris Hemsworth, Anthony Mackie, Sebastian Stan, Paul Rudd, Letitia Wright, Simu Liu, Tom Hiddleston, Winston Duke, Florence Pugh, David Harbour, Wyatt Russell, Lewis Pullman, Hannah John-Kamen, Danny Ramirez, Tenoch Huerta Mejía, Patrick Stewart, Ian McKellen, Kelsey Grammer, James Marsden, Rebecca Romijn, Alan Cumming, Channing Tatum, Hayley Atwell, and Chris Evans.
The film is slated for release in theaters on December 18. It will also be available on Infinity Vision-certified screens.
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