12 Monkeys (TV) Cast
The cast of 12 Monkeys. Updated on October 2, 2025.
304 actors
Aaron Stanford
as James Cole (47 episodes)

Aaron Stanford portrays the role of James Cole in 12 Monkeys. James Cole is a time traveler from a post-apocalyptic future who is sent back in time to prevent the outbreak of a deadly virus. Stanford brings a sense of determination and vulnerability to the character, capturing both his strength and his struggles.

Amanda Schull
as Cassandra Railly (47 episodes)

Amanda Schull plays the character of Cassandra Railly in the show. Cassandra is a brilliant virologist who becomes involved in James Cole's mission to save humanity. Schull brings intelligence and compassion to her portrayal of Cassandra, effectively showcasing her character's growth and resilience throughout the series.

Kirk Acevedo
as José Ramse (32 episodes)

Kirk Acevedo takes on the role of José Ramse in 12 Monkeys. José Ramse is James Cole's closest friend and ally, but their friendship is tested as they navigate the time-traveling journey together. Acevedo captures the complexity of his character, portraying José's loyalty and internal conflicts with depth and nuance.

Barbara Sukowa
as Katarina Jones (47 episodes)

Barbara Sukowa portrays the character of Katarina Jones, a brilliant scientist and the inventor of the time machine. Katarina is a central figure in the series, guiding James Cole on his mission and facing her own personal challenges. Sukowa embodies the character's intelligence and determination, adding depth to her performance.

Emily Hampshire
as Jennifer Goines (43 episodes)

Emily Hampshire brings the character of Jennifer Goines to life in 12 Monkeys. Jennifer is a mentally unstable and unpredictable character who plays a crucial role in the series. Hampshire delivers a captivating performance, capturing Jennifer's eccentricities and vulnerability in a compelling manner.

Todd Stashwick
as Deacon (38 episodes)

Todd Stashwick plays the role of Deacon, a charismatic and formidable leader of a group called the West VII. Deacon is initially an antagonist but later becomes a complex and multi-dimensional character. Stashwick portrays Deacon's cunning and charm, making him a memorable presence on the show.

Noah Bean
as Aaron Marker (15 episodes)

Noah Bean portrays Aaron Marker in 12 Monkeys. Aaron Marker is Cassandra Railly's ex-fiancé and plays a significant role in the series. Bean brings emotional depth to his character, navigating the complexities of Aaron's relationships and personal challenges with skill.

Alisen Down
as Olivia Kirschner (21 episodes)

Alisen Down takes on the role of Olivia Kirschner in the show. Olivia is a mysterious and powerful character who becomes a major player in the time-traveling conflict. Down's portrayal of Olivia is enigmatic and captivating, keeping viewers on the edge of their seats as they unravel the character's secrets.

Brendan Coyle
as Benjamin Kalman (1 episode)
David Richmond-Peck
as Olivia's Agent (1 episode)
Chantria Tram
as Auction Clerk (1 episode)
Mishka Thébaud
as Sam Adult (1 episode)
Paul Kingston
as Markridge Security #1 (1 episode)
Dominique Provost-Chalkley
as Arianna (1 episode)
Harper Gunn
as Hannah Jones (3 Years Old) (1 episode)
Olga Plojhar Bursíková
as Woman 3 (1 episode)
Claire Cooper
as Eliza (1 episode)
Miguel Anthony
as Orderly #1 (1 episode)
Victoria Emslie
as Amelia (1 episode)
Sierra Wooldridge
as Lucinda (3 episodes)
Anna Devlin
as Chorus (2 episodes)
Anthony J. Mifsud
as Mr. Hockley (3 episodes)
Patrick Garrow
as Matthew Cole (3 episodes)
Asia Rempel
as Child Isabelle (1 episode)
James Callis
as Athan Cole / The Witness (5 episodes)
Zeljko Ivanek
as Leland Goines (3 episodes)
Erik Knudsen
as Thomas Crawford Jr. (2 episodes)
Scottie Thompson
as Vivian Rutledge (7 episodes)
Eve Harlow
as Vanessa (1 episode)
Sophia Walker
as Marjorie (1 episode)
Konima Parkinson-Jones
as Peggy (1 episode)
Emily Klassen
as Chosen Woman (2 episodes)
MacKenzie Boyd-Garrison
as Hooker Type (1 episode)
Jackie Geary
as Mona (1 episode)
Rosemay Lefebvre
as Baby Jennifer (1 episode)
Booda
as Watchmaker (1 episode)
Jim High
as Enslow Carver (1 episode)
Christina Dixon
as Nurse (1 episode)
John Malafronte
as Server (1 episode)
Denisa Pfauserová
as Woman 1 (1 episode)
Kathryn Alexandre
as Old Jennifer Goines (1 episode)
Kelly McNamee
as Beautiful Woman (1 episode)
Rupert Graves
as Sebastian (1 episode)
Christian Dunckley Clark
as Gentleman (1 episode)
Jack Hamilton
as Young Athan (1 episode)
Theo Preston
as Kid #1 (1 episode)
Frederick Preston
as Kid #2 (1 episode)
Kristin Booth
as Railly (1 episode)
Jack Fulton
as Young Cole / Boy Witness (6 episodes)
Taybion Nguyen
as Labcoat (1 episode)
Reece Presley
as Kissing Soldier #1 (1 episode)
Alex Cruz
as The Bellboy (1 episode)
Peter Prystanski
as Heavy-Set Man (1 episode)
Avaah Blackwell
as Alabaster Woman (1 episode)
Matthew MacCallum
as Monkey Mansion Figure (1 episode)
Daniel Alfredo Ojeda
as Probation Officer (2 episodes)
Nicholas Fry
as Pallid Boy (2 episodes)
Joe Gatto
as Security Officer Larry (1 episode)
Sal Vulcano
as Security Officer Sal (1 episode)
Clive Walton
as Auctioneer (1 episode)
Linda V Carter
as Ring Lady (1 episode)
Graeme Guthrie
as Olivia Henchman #1 (1 episode)
Christopher Lloyd
as The Missionary (uncredited) (1 episode)
Michael Pitthan
as Guard 1 (1 episode)
Lukáš Bech
as Guard 2 (1 episode)
Brendan J. Rowland
as TF Head Guard (1 episode)
Andrea Davis
as Scientist (1 episode)
Lukáš Jůza
as Detective Doležal (1 episode)
Jennifer K Preston
as Jennifer's Alter Ego (uncredited) (2 episodes)
Conleth Hill
as Bonham (2 episodes)
Taveeta Szymanowicz
as Sharon (1 episode)
Tony Munch
as Fields (1 episode)
Lynne Cormack
as Unfaithful Mother (1 episode)
Alden Adair
as Reed (1 episode)
Holly Deveaux
as Young Olivia (uncredited) (1 episode)
Stephen R. Hart
as Seer (1 episode)
Mark Gibson
as Security Man #1 (1 episode)
Brandon Zakkai
as Monkey Man (1 episode)
Joyce Chan
as Frontier Woman (1 episode)
Mark Caven
as Reiner (1 episode)
Dale Samms
as Man in Suit (1 episode)
P. Rodney Barnes
as Hotel Manager (1 episode)
Tyler East
as Pallid Teen (1 episode)
James Madge
as German (1 episode)
Michael Bodnar
as Boris (1 episode)
Sergey Volkov
as Nazi (1 episode)
Anna Fraser
as Young Isabelle (1 episode)
Jennifer Vallance
as Older Isabelle (1 episode)
Adam Murciano
as Young Shaw (1 episode)
Thure Riefenstein
as Friedrich Waesch (1 episode)
Hans Longo
as Hans (1 episode)
Lívia Bielovič
as Madame Magnifique (1 episode)
Petra Štíbrová
as Sophie (1 episode)
Martin Angerbauer
as Schreiber (1 episode)
Petr Klimeš
as Scar (1 episode)
Aleš Bílík
as SS Nazi Door Soldier (1 episode)
Vojtěch Havelka
as Enamored Soldier (1 episode)
Václav Jiráček
as Nazi Soldier #1 (1 episode)
Josef Vaňousek
as Nazi Soldier #4 (1 episode)
Maciej Salamon
as Nazi Soldier #5 (1 episode)
For the best insights and data about the TV show 12 Monkeys, visit our main 12 Monkeys page.