- Clark Gregg - Admiral Anton Milius
- Michael Aronov - Dr. Nima Rousseau
- Sean Bean - Joseph Wilford
- Steven Ogg - Pike
- Chelsea Harris - Sykes
- Annalise Basso - LJ Folger
- Archie Panjabi - Asha
- Mark Margolis - Old Ivan
- Camille Hollett-French - Jackboot Stroud
- John C. MacDonald - Handsome Young Man
- Duncan Ollerenshaw - Anton The Tailer
- Eric Bempong - Tailie Boy
- Jazmine Campanale - Weird Woman
- Shalyn Ferdinand - Wilford Thirdie
- Mark Krysko - Ragged Soldier
- Yael Yurman - Bridget
- Paul Belsito - Tunnelman Hedges
- Simon Chin - Jackboot Jefferson
- Cassandra Naud - Fiona
- Kenneth Tynan - Junior Brakeman
- William Stanford Davis - Mr. Riggs
- Geraldine Chiu - Gabby
- Colin Corrigan - Executioner
- Jaymee Mak - Asian Woman
- Phillip Mitchell - Young Father
- Vincent Gale - Robert Folger
- Jonathan Walker - Big John
- Happy Anderson - Dr. Henry Klimpt
- Madeleine Arthur - Nikki Genêt
- Kerry O'Malley - Lilah Folger
- Donna Christie - Edith Gusterfeld
- Tina Grant - Jackboot Rogers
- Stephen Lobo - Martin Colvin
- Malcolm Sparrow-Crawford - Busboy
- Gary Hetherington - Walter The Papermaker
- Bradley Duffy - Middle Aged Man
- Michael Hanrahan - Bolger
- Gabriel Jacob-Cross - Young Miles
- Ryan Robbins - Jack
- Yuta Takenaka - Jackboot Donaldson
- Anthony Joseph - Jackboot Mansfield
- Matt Murray - Erik
- Zachary James Rukavina - Right Hand Man
- Michel Issa Rubio - Santiago
- Benjamin Charles Watson - Brakeman Fuller
- Milli Wilkinson - Mikala
- Danny Waugh - Silva
- Barbara Wallace - Old Woman Survivor
- Natalie von Rotsburg - Mrs. Wing
- Sean Kohnke - BA security #1
- Barry Nerling - One-Eyed Tailie Veteran
- Yee Jee Tso - York Lam
- Ajay Banks - Nurse
- Bryan Terrell Clark - Pastor Logan
- Carmel Amit - Mira
- Sarah Strange - Suzanne
- Amanda Brugel - Eugenia
- Georgina Haig - Emilia
- Camille Atebe - Cherry Sherry
- Stefania Indelicato - Thirdie Yeller
- Dylan Schmid - Patterson
- Elizabeth Thai - June
- Carolyn Yu - Mia
- Renée Victor - Mama Grandé
- Aaron Glenane - The Last Australian
- Shaun Toub - Terence
- Grace Sunar - Young Alexandra Cavill
- Doron Bell - Jackboot Lt. Gardiner
- Steve Baran - Brakeman Ames
- Anup Sehdev - Tunnelman #1
- Demord Dann - Second Patient
- Timothy V. Murphy - Commander Grey
- Brent Stait - Jakes Carter
- Manoj Sood - Rajiv Sharma
- Manoj Sood - Sharma
- Garfield Wilson - Jackboot Kaffey
- Andre Tricoteux - Icy Bob
- Alex Kliner - Tailor
- Louis Lay - Handsome Man
- Brennan Lloyd - Androgynous Man
- Sakina Jaffrey - Mrs. Headwood
- Damian Young - Mr. Headwood
- Angel Giuffria - Hannah
- Andrea Ware - Jackboot Tyson
- Eric Pollins - Cakemaker
- Kurt Ostlund - Strong Boy
- Ellie Harvie - The Notary
- RJ Fetherstonhaugh - Jackboot Clifford
- Tom Lipinski - Kevin McMahon
- Adrian Neblett - Winston
- Adrian Neblett - Barkeep Winston
- Elaine Kao - Anne Roche
- Bola Omodara - Jackboot Gibbs
- Kristian Bruun - Whiggins
- David Beairsto - Ag-Sec Evacuee
- Dominic Goodman - Chunder
- Taylor St. Pierre - Brakeman Elliott
- Kandyse McClure - Tail Boss
- Nickolas Baric - Toothy Agent
- Jaren Moore - Greasy Agent
- Aleks Paunovic - Breachman Boscovic
- Karin Konoval - Dr. Pelton
- Jaylin Fletcher - Miles
- Miranda Edwards - Lights
- Mike Li - Damien
- Mike Li - Damien Ho
- Kwasi Thomas - Z-Wreck
- Kelly-Ruth Mercier - Annie
- Ian Collins - Tristan
- Jane McGregor - Astrid
- Fiona Vroom - Ms. Gillies
- Emma Oliver - Winnie
- Esther Ming Li - Carly
- Leah Jacksties - Junior Brakeman Charles
- Matthew Mandzij - Brakeman West
- Donia Kash - Girl
- Sam Quinn - Lee
- Ian Rozylo - Jackboot Trotter
- Alec Santos - Tino
- Rohan Campbell - Junior Butcher
- Tom Kirk - Clay
- Lillian Lim - Proprietor
- Racquel Belmonte - Puppet (voice)
- Michael Dobson - Puppet (voice)
- Jorgito Vargas Jr. - Watermaster
- Abiola Uthman - Jackboot
- Ryan Mah - Dr. Kanu
- Fraser Aitcheson - Lion
- Herschel Andoh - Wolf
- Noah Crawford - Rat
- Tommy Europe - Gazelle
- Graeme Guthrie - Ace of Spades
- Lauren Bradley - Nurse Ellie
- Rhinnan Payne - Teenage Girl
- Rhona Rees - Private Taylor
- Kyle Mosonyi - Soldier
- Oleg Nazarov - Ag-Sec Soldier
- Leanne Buchanan - Former Tailie
- Lisa Chandler - Subtrain Soldier
- Sam Darkoh - Military Doctor
- Chelsea Gill - Jetway Soldier
- Laura Jaye - Foreman (Tunnelman)
- Sabrina Pitre - Announcer (voice)
- Brett Wise - Gas Mask Soldier
- Sumalee Montano - Kari Chang
- Stephen Adekolu - Private Osondu
- Paolo Maiolo - Private Hernandez
- Kalyn Miles - OFM Guard
- Sarah Edmondson - Linda - Admiral's Wife
- Spencer Graham - Nervous Soldier
- Cameron Grierson - Vigilant Soldier
- Eileen Pedde - Etzel
- Benjamin Legrand
- ???
- Marty Adelstein
- Lee Tae-hun
- Becky Clements
- Aubrey Nealon
- Liam Fearnley
- Natasha Duprey
Mark Margolis hace el papel de Old Ivan.
Jennifer Connelly hace el papel de Melanie Cavill.
Daveed Diggs hace el papel de Andre Layton.
Mickey Sumner interpreta a Bess Till en la serie.
Alison Wright hace el papel de Ruth Wardell.
Iddo Goldberg hace el papel de Bennett Knox.
Roberto Urbina hace el papel de Javier de La Torre.
Rowan Blanchard hace el papel de Alexandra Cavill.
Lena Hall interpreta a Miss Audrey en la serie.
Katie McGuinness interpreta a Josie Wellstead en la serie.
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