Avengers: Doomsday star Hayey Atwell has promised the film will be an "existential epic".

During the Marvel panel at the San Diego Comic-Con this weekend (26.07.26), it was confirmed that Hayley will be reprising her role as Peggy Carter - the love interest of Chris Evans' Captain America/Steve Rogers - in the highly-anticipated blockbuster.

And now Hayley has opened up about her role in the film, while attempting to maintain some secrecy around Doomsday.

She told ScreenRant: "Without giving anything away. I think that you have a movie that's an existential epic. The whole thing's turned on its head.

"It's not a world you really recognise, and then there are aspects of it that are familiar, but that feel very heightened and vulnerable.

"And I feel like, with Peggy, she's on the receiving end of that."

Peggy was last seen in Avengers: Endgame, when Steve was seen going back in time in order to live out the rest of his life alongside his one true love.

But in this film, Hayley said her character is in a "very dangerous, terrifying situation", adding: "She's hyper vigilant the whole time of the worst happening."

Hayley was then asked what kind of role Peggy takes on in the new environment, after previously being someone that everyone else can rely on.

To which she replied: "In the past, Peggy was considered the adult in the room, the one with the uniform that you can trust and rely on because she's a good person.

"It's always fun to play something that feels a little bit [more] expansive than that, a little bit more nuanced, because I think that makes her also even more human and relatable."

Hayley insisted she "had no desire to go over old ground" with Peggy, and "wanted something new to do".

And despite not having seen the movie herself as yet, Hayley concluded: "That's what I hope has landed."

Avengers: Doomsday, which will see the return of Robert Downey Jr. and Chris Hemsworth to the franchise, is due for release this December.