Photo Credit: Marvel Studios
Avengers: Doomsday cast keeps growing as a rising child actor seemingly joins the movie. The up-and-coming star known for Disenchanted, Subservience, and Wolf Man may have a crucial role in the MCU film.
Who has seemingly joined the cast of Avengers: Doomsday?
Matilda Firth has reportedly joined Avengers: Doomsday, according to her resume as noticed by Prime Top News on X. The resume previously listed her role as ‘Little Girl’ before the information was removed by her agency, The Artists Partnership. While details remain scarce, she is expected to have a key role in the movie’s story.
Matilda Firth has been cast in ‘AVENGERS: DOOMSDAY’(Via: https://t.co/8Gb6RZjQ89…) pic.twitter.com/1mPqK8DVUD— PrimeTopNews (@PrimeTopNews) May 26, 2026
Another insider account, Earth 616, speculated that Firth may appear as Valeria Richards (Dr. Doom’s goddaughter in the comics). But the catch is that this angle may not “align with the timeline of the Doomsday and the events of the Fantastic Four: first steps.” Hence, nothing can be confirmed until Marvel issues an official announcement.
Firth’s resume shows that she’s been featured in TV shows like Nine Perfect Strangers, Cama, Mr. Bates vs Post Office, Hullraisers, Time, and The Power, among others. She also appeared in Tinsel Town, I Before E, Starve Acre, Christmas Carole, and The Duke.
Image Credit: XYZ Films
Avengers: Doomsday already has a packed cast, headlined by the return of Robert Downey Jr as the main villain Victor von Doom. Joining him are Chris Evans reprising his role as Steve Rogers or Captain America, and Chris Hemsworth returning as Thor.
The rest of the ensemble cast includes Letitia Wright, Tenoch Huerta Mejía, Ebon Moss-Bachrach, Vanessa Kirby, Anthony Mackie, Sebastian Stan, Paul Rudd, Wyatt Russell, Tenoch Huerta Mejía, Simu Liu, Florence Pugh, Kelsey Grammer, Lewis Pullman, Danny Ramirez, Joseph Quinn, David Harbour, Hannah John-Kamen, Tom Hiddleston, Alan Cumming, Rebecca Romijn, Channing Tatum, Patrick Stewart, Ian McKellen, James Marsden, and Pedro Pascal.
Avengers: Doomsday is set to release in theaters on December 18, 2026.



