Amazon's adaptation of the Fallout video game series is expanding its cast for the upcoming third season with the addition of Manny Jacinto, Emily Mortimer, and Thomasin McKenzie. All three actors have secured recurring roles in the show.

Manny Jacinto is known for his role as Jason Mendoza in the NBC sitcom The Good Place and recently appeared in the Star Wars series The Acolyte. Emily Mortimer's extensive filmography includes "Notting Hill," "Paddington in Peru," and "Shutter Island," along with television roles such as Phoebe in "30 Rock."

Thomasin McKenzie gained recognition for her role as Elsa Korr in "Jojo Rabbit" and previously appeared in "The Hobbit: The Battle of the Five Armies" as Astrid. These new additions will join returning cast members Ella Purnell and Walton Goggins, as well as series newcomer Aaron Paul.

Production for Fallout's third season is set to begin in Los Angeles this month. The series was renewed for its third season in May of last year, prior to the debut of its second season. Bethesda's Todd Howard confirmed in December that writing for the third season was already in progress.

Season two of Fallout incorporated numerous Easter eggs, referencing characters and elements from the earlier games in the franchise. The series has consistently drawn from the beloved video game source material since its debut.