- 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 interpreta a Old Ivan en la serie.
Jennifer Connelly hace el papel de Melanie Cavill.
Daveed Diggs interpreta a Andre Layton en la serie.
Mickey Sumner interpreta a Bess Till en la serie.
Alison Wright hace el papel de Ruth Wardell.
Iddo Goldberg interpreta a Bennett Knox en la serie.
Roberto Urbina interpreta a Javier de La Torre en la serie.
Rowan Blanchard hace el papel de Alexandra Cavill.
Lena Hall interpreta a Miss Audrey en la serie.
Katie McGuinness hace el papel de Josie Wellstead.
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