Led by a familiar cast, the Prime Video series season 1 of Citadel, these characters try to figure out their past as they go up against the evil syndicate that caused their agency's downfall.

Boasting the second-largest budget for any television series ever, Citadel is at the center of a groundbreaking plan to branch off into localized spinoffs focused on different parts of the world, including Italy, Mexico, and India. While those international satellite shows may feature their own sets of characters, it's unclear if the main cast of the sci-fi action series, which has already been renewed for a second season, will carry over to any of the offshoots. The following is a guide to the known characters of Citadel in season 1, who plays them in the cast, and what else the actors are known for.

Richard Madden As Mason Kane

Richard Madden looking at a computer readout in Citadel
Richard Madden in Citadel

Co-leading the cast of Citadel, Richard Madden plays Mason Kane, one of the titular agency's top spies who barely got away, sans his memories, when the organization was destroyed. Eight years later, he's recruited for a new mission against rival agency Manticore, despite him not even recalling his days as a secret agent. Madden is best known for his infamously fated role as Robb Stark in Game of Thrones. He also played the prince in Disney's live-action Cinderella, portrayed Elton John's manager, John Reid, in the biopic Rocketman, appeared in the role of Lt. Joseph Blake in 1917, and gave life to the Marvel Comics character Ikaris in Eternals.

Priyanka Chopra Jonas As Nadia Sinh

Priyanka Chopra Jonas as Nadia Sinh holding a gun in train Citadel

Madden's co-lead in Citadel's cast is Priyanka Chopra Jonas, who plays fellow former spy Nadia Sinh. She had been Mason's partner, but due to their memories being wiped, they have to learn to work together all over again. After being crowned Miss World 2000, Chopra Jonas became one of the highest-paid actresses in India, where she's known for starring in the Don and Krrish franchises. Expanding her popularity to America, she became a regular on ABC's Quantico and appeared in the movies Baywatch and The White Tiger, and played the new character Sati in The Matrix Resurrections. She's also a singer, philanthropist, and entrepreneur, involved in everything from tech startups to restaurants.

Related: Citadel Star Explains Risky & Experimental Global Storytelling For Prime Show

Stanley Tucci As Bernard Orlick

Stanley Tucci Holding a gun in Citadel

Another member of the Citadel team, Bernard Orlick locates and recruits Mason to save the world from Manticore. The character is played in Citadel by Stanley Tucci, who is best known for being part of the cast of the Hunger Games franchise in the role of Caesar Flickerman. He co-starred in the Transformers movies, in multiple unrelated roles, as well as Disney's live-action Beauty and the Beast, Marvel's Captain America: The First Avenger, the Best Picture-winner Spotlight, and Peter Jackson's adaptation of The Lovely Bones, for which he earned an Oscar nomination for Best ing Actor. Additionally, Tucci co-wrote, directed, and starred in the movies Big Night and Blind Date.

Lesley Manville As Dahlia Archer

Lesley Manville as Dahlia Archer sitting on a couch as In Citadel

The Citadel cast is fortunate to include another Oscar nominee in its ranks, as Lesley Manville appears as the mysterious and cunning diplomat Dahlia Archer. She earned an Academy Awards nod for her ing performance as Cyril in Paul Thomas Anderson's Phantom Thread. Manville is otherwise best known for her longtime collaboration with filmmaker Mike Leigh, co-starring in such movies as Another Year, Mr. Turner, Secrets & Lies, Topsy-Turvy, and Vera Drake. She is additionally familiar to audiences for playing the fairy Flittle in Disney's Maleficent movies, Princess Margaret in seasons 5 and 6 of The Crown, and the title role in the film Mrs. Harris Goes to Paris.

Citadel's ing Cast & Characters

Richard Madden and Priyanka Chopra Jonas holding weapons in Citadel

Ashleigh Cummings as Abby Conroy - Australian actress Ashleigh Cummings is mostly known in the U.S. for her role as Vic McQueen on the TV series NOS4A2. She also co-starred in The Goldfinch and Tomorrow, When the War Began.

Osy Ikhile as Carter Spence - British actor Osy Ikhile previously co-starred in The Legend of Tarzan, Ron Howard's In the Heart of the Sea, the sci-fi show Childhood's End, and the Black Mirror episode "USS Callister."

Roland Møller as Anders Silje and Davik Silje - Award-winning actor Roland Møller is best known for Danish productions including Land of Mine and Nordvest. His work in Hollywood has included roles in the action movies The Commuter, Skyscraper, and Atomic Blonde.

Caoilinn Springall as Hendrix Conroy - Child actor Caoilinn Springall hasn't been in much yet, but her film debut saw her co-star opposite George Clooney in the Netflix sci-fi movie The Midnight Sky.

Moira Kelly - Mostly ed for her starring role in the ice skating romance drama The Cutting Edge, Moira Kelly also took over the role of Donna Hayward in Twin Peaks: Fire Walk with Me, played the part of Karen on the show One Tree Hill, and voiced Nala as an adult in Disney's animated feature The Lion King and its sequels.

Timothy Busfield as Simmons - Rounding out the familiar faces in the cast of Citadel is Timothy Busfield. The actor is known for playing Elliot on Thirtysomething and Danny Concannon on The West Wing. He also had significant roles in Field of Dreams and the Revenge of the Nerds movies, where he played Poindexter.