- Venus Terzo - Nadya Ratamsky
- Byron Lawson - Oderic
- Sarah Deakins - Sasha
- Lawrence Bayne - Abelard
- John de Lancie - Uncle Sid Barry / Sam Profitt
- Kristi Angus - Lt. Lyra
- Colin Lawrence - 1st Renegade
- Christopher Judge - Achilles Avatar
- Darryl Quon - Glasten
- Cameron Daddo - Rafe Valentine
- Mark Holden - Brother Thaddeus Blake
- Ralf Moeller - Jeger
- Mackenzie Gray - Venetri
- Malcolm Stewart - Chancellor Chandos
- Noel Fisher - Breyon
- Dave 'Squatch' Ward - Ferahr
- Dale Wilson - Admiral Alexander
- Louis Chirillo - Ngomi
- Glenn Ennis - Dragon Officer
- Mark Hildreth - Brendan Lahey
- Hiro Kanagawa - General Burma
- Steve Bacic - Telemachus Rhade
- Steve Bacic - Gaheris Rhade
- Steve Bacic - Telemachus Rhade / Gaheris Rhade
- Cobie Smulders - Rhade's Wife
- Nigel Bennett - Paroo
- Colin Cunningham - Shig
- Chelah Horsdal - Misabo Ahm
- Laura Mennell - Siara
- Peter Wingfield - Lach
- Erica Durance - Amira
- William B. Davis - Professor Logitch
- Costas Mandylor - Bobby Jensen
- Cynthia Preston - Liandra
- Phillip Mitchell - James Severin
- Brendan Beiser - Flux
- Noah Dalton Danby - Rbarton
- Mark Acheson - Trader
- Robin Mossley - Timeo
- Dustin Milligan - Lon
- Alan Scarfe - Flavin
- Gary Jones - Woody
- Blu Mankuma - Marlowe
- Ray Galletti - Kemp
- Donna White - Flordelis
- Michael Shanks - Gabriel / Balance of Judgment
- Sam Sorbo - Dr. Sara Riley
- Mike Desabrais - Perseid
- Nathaniel DeVeaux - Dutch
- Nels Lennarson - Arjun
- Steven Grayhm - Prince Erik
- Steve Makaj - Commander Cross
- Colin Foo - Kun-Sa
- Michelle Harrison - Female Guide Android
- Sage Brocklebank - Figure
- Kandyse McClure - Zara
- Peter DeLuise - Calvino
- Missy Peregrym - Lissett
- Travis MacDonald - Ozzie
- Matthew Walker - Secretary Falin
- Dean Wray - Fletcher
- Natassia Malthe - Tolek
- Nia Peeples - Rox Nava
- Nimet Kanji - Commonwealth Op
- Paul Johansson - Guderian
- Emmanuelle Vaugier - Maura
- Wanda Cannon - Ch'kadau Leader
- Aaron Douglas - Wezlow
- Elizabeth Thai - Twilight
- Elizabeth Thai - Than Pilot
- Elizabeth Thai - Refractions of Dawn
- Rachel Hayward - Adulasia Stalin
- Rachel Hayward - Cory
- Tony Alcantar - Sy
- Matthew Bennett - Cutter
- Christine Chatelain - Cavava
- Michael Hurst - Ryan
- Stefanie von Pfetten - Nema
- Kevan Ohtsji - Burma Henchman
- Kevan Ohtsji - Lt. Frymire
- Shawn Stewart - Brexos
- Yvonne Myers - Courier Pilot
- Lori Stewart - Varastaya
- Dario Delacio - Brexos
- Kimberly Huie - Elssbett Mossadim
- Kimberly Huie - Elssbett Mossadim-Bolivar
- Ernie Jackson - Mercenary
- Trish Schill - Android #1
- Chris Lovick - Hayek
- Amber Rothwell - Nassan
- Richard de Klerk - Mapes
- Paul Campbell - Lt. Bowlus
- Paul Campbell - Crewman Bowlus
- Barbara Tyson - Voice Artist (voice)
- Barbara Tyson - Voice Artist
- Jo Bates - Captain Borotep Yeshgar
- Charles Payne - Danyluk
- Brian George - Vikram Singh Khalsa
- Pablo Coffey - Wayist Monk
- Marco Soriano - Restorian
- Eli Gabay - Capt. Khalid
- Leanne Adachi - Marquez
- Claudette Mink - Kae-Lee
- Ron Robinson - Xax
- Kimberley Warnat - Jessa
- Bill Croft - Warden
- Randy Lee - Big Blue Alien
- John Juliani - Councilor Min
- Mikela Jay - Colonel Yau
- Allan Morgan - President Sebastian Lee
- Douglas O'Keeffe - Captain Warrick
- Gavin Buhr - Gunnery Sergeant
- Gavin Buhr - Gorejon
- Alex Zahara - Hanno
- Chapelle Jaffe - Admiral Constanza Stark
- James Ralph - Commando
- John Tench - Gerentex
- Peter Kelamis - Grask
- Peter Kelamis - Casino Thug
- Peter Kelamis - Mayor Doge Miskich
- Moya O'Connell - Tiama
- Garfield Wilson - Szabos
- Darrin Klimek - Arun
- Kenan Raven - Nietzschean Spy
- Jennie Rebecca Hogan - Shura
- Jason Diablo - Pogue
- Brock Johnson - Magog Warrior
- Ian Marsh - Kiyami
- Anthony Lemke - Leydon Bryce-Hawkins
- Adrian G. Griffiths - Cuchulain Nez Pierce
- Adrian G. Griffiths - Fleet Marshall Cuchulain Nez Pierce
- Richard Side - Beetle
- Rik Kiviaho - Rekeeb
- Rik Kiviaho - High Guard Captain Perim
- Rik Kiviaho - Head Monk
- Antonio Cupo - Lieutenant Gadell
- Enuka Okuma - Saphia Wei
- Roger Cross - Carter
- Janyse Jaud - Clarion of Loss (voice)
- Janyse Jaud - Secretary
- Janyse Jaud - . Pax Magellanic Avatar (voice)
- Janyse Jaud - (voice artist)
- Janyse Jaud - Cavava (voice)
- Bruce Harwood - Philip Kim
- Zahf Paroo - Jamahl R-H Brown
- James Marsters - Charlemagne Bolivar
- Jud Tylor - Satrina Leander
- Vince Metcalfe - King Florin
- Timothy Webber - Archduke
- Allan Gray - Yanos
- Kurt Evans - Cutter Lieutenant
- Kevin McNulty - Cuatemoc
- David Palffy - Ursari
- David Palffy - Academician Ler-Near
- Kristina Copeland - Kylie Vance
- Angela Moore - Morgiana
- Heather Hanson - Margot
- Berend McKenzie - Lem
- Brahm Taylor - Mouth Bokor
- Jessica Amlee - Little Girl
- Jesai Jayhmes - Dr. Mino Tabascalli
- Ken Kirzinger - Glux
- Ken Kirzinger - Willie
- Ryan Drescher - Ethan
- Kim Hawthorne - Tri-Camille
- Kim Hawthorne - Lawyer
- Dylan Bierk - Freya
- Marion Eisman - Olma
- Andee Frizzell - Mila
- David Lovgren - Desmond
- Christopher Logan - Prometheus Wellington
- Chris Humphreys - Admiral Zhukov Pashtun
- Anne Marie DeLuise - Major Whendar
- Anne Marie DeLuise - Astrid
- Kevin Durand - VX
- Kevin Durand - Elysian
- Ellie Harvie - First Counselor Cernun
- Monika Schnarre - Marida
- Monika Schnarre - Lieutenant Jill Pearce
- Robert Saunders - The Abyss
- Robert Saunders - Enigma
- Robert Saunders - Spirit of the Abyss
- John DeSantis - Hsigo
- John DeSantis - Behemoth
- John DeSantis - Stalin Kuleshov
- Christina Jastrzembska - Madam Prevor
- Steven McMichael - The Alien
- JR Bourne - Marshall Ataturk
- Winston Rekert - Zeus
- Sal Sortino - Konstantine
- Tonjha Richardson - Max Lincoln
- Colin Corrigan - Peder
- Tyler McClendon - Commonwealth Officer
- Tim O'Halloran - Fellenhoff Jailer
- Scott Owen - Maitre d'
- Len Doncheff - Numa
- Colby Wilson - Pinable
- Melanie Blackwell - Zumara
- Krista Rae - Angelika
- Mina E. Mina - Dr. Yanomani
- Lauren K. Robek - Gretchen Rania
- Robert Lewis - Caylor Ragatz
- Tony Todd - Captain Fehdman Metis
- Jianna Ballard - Young Beka
- Jianna Ballard - Maya Propina / Young Beka
- Lorin Heath - Dorothy / Jane
- Jason Griffith - Pilot
- A.C. Peterson - Bodey Gunyon
- Michael Hogan - Crescent
- Greg Kean - Man-Ka-Lupe
- Dan Pelchat - The Leper
- Shannon Tuer - Woman with The Leper
- Ted Kozma - Alien
- Norm Sherry - Guard
- William Katt - Eddie Aldrich
- Christian Bocher - Calleb Voth
- Emy Aneke - Thompson
- Charles Zuckermann - Perseid Dockmaster
- Charles Zuckermann - Pilot
- Johnny Mah - Stam
- Geordie Johnson - Bartolome Naz
- Leila Johnson - Desiree D'lene
- Sonya Salomaa - Uxulta
- Sonya Salomaa - Aurelia
- Michael Roselli - Scourage
- Jayne Heitmeyer - Errin Shohashi
- Adam J. Harrington - High Guard Captain Grissum
- Lenore Zann - Senator Bayliss
- Peter Shinkoda - Burke
- Peter Kent - Genghis
- Chris Potter - Able Ladrone
- Peter Bryant - Marshal Orac
- Shawn Reis - Flecks
- Shawn Reis - Nietzchean Soldier
- Jody Thompson - Azazel
- Robert Clarke - Admiral Hamsa
- Aleks Paunovic - Agio
- Helene Joy - Alien Queen
- Stacy Grant - Tori Leighton
- Ingrid Torrance - Duran
- Ingrid Torrance - Sakkai Saguro
- Christopher Heyerdahl - Gaiton
- Cameron Park - Dr. Henry Semel
- Tim Henry - Amory Sutton
- Kendall Cross - Pravarti Quechua
- Kendall Cross - Marika
- Dan Shea - Captain of the Intelligence
- Jim Byrnes - Virgil Vox (voice)
- Jim Byrnes - Virgil Vox
- Jim Byrnes - Shineoa San
- Krista Allen - The Princess
- William Samples - King of Prolon
- John Innes - Royal Consul
- Marie Stillin - Judge
- Derek Morrison - Bailiff
- Angelika Libera - Handmaiden
- Paul Lazenby - The Prosecutor
- D. Neil Mark - Alexandros
- Sarah-Jane Redmond - Jane Rollins
- Courtney Kramer - Head Nietzschean
- John Reardon - Luck
- Kristin Lehman - Molly Noguchi
- Neil Maffin - Kroton
- Maury Chaykin - Citizen Eight
- Françoise Yip - Rekel Ben-Tzion
- Françoise Yip - Ashael
- Gianna Patton - Ti-Ki
- Melissa Barker Sauer - Ron-Dai
- Chris Burns - Burly Alien Gambler
- Aaron Dudley - Antwon Sabo
- Derek Lowe - Chen
- Gerard Plunkett - Bloodmist
- Daryl Shuttleworth - Bettor
- Meredith McGeachie - Maia
- Meredith McGeachie - Geryon
- Ona Grauer - Melea Voth
- Adam Battrick - Prince Kallah
- Vicky Lambert - Beautiful Dancer
- Michael Jonsson - Guard
- D. Harlan Cutshall - Patrius Guard
- Nicholas Lea - Tri-Lorn
- Grace Park - Doctor 26Carol
- Michael Puttonen - Professor Bu-Habib
- David-Paul Grove - Professor Wel-Dar
- Ryan McDonell - Courier Pilot
- Drew McCreadie - Alien Scientist
- Rob Lee - Head Bailiff
- Martin Cummins - Kulis Bara
- Andrew Jackson - Lipp-Sett
- Ivar Brogger - Pish Tryan
- Apollonia Vanova - Narrasaya
- Sebastian Spence - Patrius
- Christina Cox - Aleyiss San
- Suzy Joachim - Doctor Professor Kor-Kavo
- John Cassini - Moldar
- Chris Webb - Courier Pilot Kent
- Michael Tomlinson - Emissary
- Jennifer Jasey - Cargo Supervisor
- Matthew Robert Kelly - Head Pilot
- Michael Anthony Rawlins - Marshall Zebra
- Tom Heaton - Doctor Crax-Q
- Jeanie Cloutier - Female Lieutenant
- Dominika Juillet - Hada
- Michael Ironside - The Patriarch
- Mark Gibbon - Templar Lieutenant
- Emily Holmes - Indra Xicol
- Carmen Moore - Tri-Jema
- John Burnside - Roddick
- Chris Kalhoon - Beka's Dad
- Michael St. John Smith - Ambassador Galdamez
- Fraser Aitcheson - Arkology Member
- Marjorie Monaghan - Louisa Messereau
- Catherine Thomas - Soprano
- Patricia Idlette - Council Member
- Andrew Campbell - Council Member
- Alexandr Kalugin - Thomas
- Steve Archer - Father
- Arthur Corber - Local
- Ken Tremblett - Jonah Darrega
- Patricia Drake - Jonah's Lieutenant
- Taras Kostyuk - Thug
- Dave Collette - Gogol
- Terry D. Stevens - Undertaker
- Gregory Calpakis - Argent
- Don S. Davis - Avineri
- Dena Ashbaugh - Virgil Vox
- Thea Gill - Celine
- Gigi De Leon - Lunah
- Dean Paul Gibson - Bozim
- Frank C. Turner - Prieus
- Bill Mondy - Stranger
- Michasha Armstrong - Alien
- Alex Diakun - Höhne
- Guy Fauchon - Nissa
- Morris Chapdelaine - Sallust
- Lochlyn Munro - Peter / Drago Museveni
- Warren Christie - Ione
- Gabe Khouth - Reveler
- Richard Faraci - Master Thux
- Kyle Cassie - Ocham Sembler
- Ari Cohen - Zayas
- Woody Jeffreys - Tall Man
- Sarah Edmondson - Larissa Knowles
- Jano Frandsen - Jack Fremont
- Ty Olsson - Mick / Morehead
- Robert Hewitt Wolfe
- Allan Eastman
- Majel Barrett
- Kevin Sorbo
Emmanuelle Vaugier hace el papel de Maura.
Ralf Moeller interpreta a Jeger en la serie.
Kevin Sorbo hace el papel de Dylan Hunt.
Lisa Ryder hace el papel de Beka Valentine.
Laura Bertram hace el papel de Trance Gemini.
Gordon Michael Woolvett interpreta a Seamus Harper en la serie.
Lexa Doig interpreta a Andromeda Ascendant en la serie.
Brandy Ledford hace el papel de Doyle.
Steve Bacic interpreta a Telemachus Rhade en la serie.
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