- Von Flores
- Â Ronald Sandoval / ... 110 episodes, 1997-2002
- Leni Parker
- Â Da'an / ... 88 episodes, 1997-2002
- Anita La Selva
- Â Zo'or 78 episodes, 1997-2002
- Richard Chevolleau
- Â Marcus 'Augur' Deveraux 70 episodes, 1997-2002
- David Hemblen
- Â Jonathan Doors 68 episodes, 1997-2002
- Robert Leeshock
- Â Liam Kincaid 67 episodes, 1998-2002
- Jayne Heitmeyer
- Â Renee Palmer 66 episodes, 1999-2002
- Lisa Howard
- Â Lili Marquette / ... 49 episodes, 1997-2002
- Melinda Deines
- Â Juliet Street 44 episodes, 2000-2002
- Kevin Kilner
- Â William Boone 24 episodes, 1997-2002
- Guylaine St-Onge
- Â Juda / ... 23 episodes, 2001-2002
- Alan Van Sprang
- Â Howlyn 22 episodes, 2001-2002
- Frank Moore
- Â Hubble Urich 21 episodes, 1999-2002
- Richard Zeppieri
- Â Frank Tate 18 episodes, 1999-2002
- Majel Barrett
- Â Dr. Julianne Belman 10 episodes, 1997-2002
- William deVry
- Â Joshua Doors 9 episodes, 1998-2001
- Barry Flatman
- Â Presidant Daniel Thompson / ... 9 episodes, 1998-2000
- Juston C. Sharratt
- Â Atavus / ... 9 episodes, 1999-2002
- Miranda Kwok
- Â Kwai-Ling Hong 3 episodes, 1997-1998
- David Calderisi
- Â Barry Calvert 7 episodes, 1997-1999
- Noam Jenkins
- Â Ryan Patrichio 7 episodes, 2001-2002
- Kari Matchett
- Â Siobhan Beckett / ... 7 episodes, 1998-2001
- Ona Fletcher
- Â Catherine Shaw 7 episodes, 1998-1999
- Helen Taylor
- Â Ra'jel 6 episodes, 2001-2002
- Michelle Nolden
- Â T'than / ... 6 episodes, 1998-2000
- John Evans
- Â Lt. Bob Morovski 4 episodes, 1997-1998
- Dean McDermott
- Â Brenton Michaels / ... 5 episodes, 1999-2002
- Janet Kidder
- Â Julia Cook 5 episodes, 1999
- Damon D'Oliveira
- Â Sahjit Jinnah / ... 5 episodes, 1998-2002
- Janet-Laine Green
- Â Dr. Melissa Park 5 episodes, 1998-1999
- Montse Viader
- Â Maiya / ... 5 episodes, 1998-1999
- Brendan Connor
- Â Newscaster / ... 5 episodes, 1999-2002
- Joel Harris
- Â Lead Volunteer / ... 5 episodes, 1999-2000
- Michael Filipowich
- Â Judson Corr 4 episodes, 1997-1999
- Shary Guthrie
- Â Dee Dee Sandoval / ... 4 episodes, 1997-2001
- Alison Burn
- Â Dr. Dupree 4 episodes, 2000-2001
- Neil Dainard
- Â Lt. General George Nason / ... 4 episodes, 1997-2001
- James Downing
- Â John Besson / ... 4 episodes, 1998-2001
- Jonathan Whittaker
- Â Defense Attorney / ... 4 episodes, 1999-2002
- James Binkley
- Â Atavus / ... 4 episodes, 1998-2002
- Lloyd Adams
- Â Advanced Drone / ... 4 episodes, 1997-2000
- Martin Roach
- Â Fisk / ... 4 episodes, 1999-2001
- Garwin Sanford
- Â Federov 4 episodes, 2000-2001
- Andrew Jackson
- Â The First Jaridian 3 episodes, 1999-2002
- Brooke Johnson
- Â Quo'on 3 episodes, 1998
- Topaz Hasfal-Schou
- Â Holo-Girl 3 episodes, 2000
- Christina Cox
- Â Haley Simmons 3 episodes, 1999-2000
- Nadia Capone
- Â Dr. Alison Curzon 3 episodes, 1999-2001
- Dan Chameroy
- Â Vorjak 3 episodes, 2000-2002
- Derek Scott
- Â Dr. Qu 3 episodes, 2002
- Kate Trotter
- Â Dr. Park 3 episodes, 1998
- Paul Boretski
- Â Capt. Stuart Trammel / ... 3 episodes, 1997-2002
- Janet Zenik
- Â Ne'eg 3 episodes, 1997-1998
- Sonia Dhillon Tully
- Â Rayna Armitraj 3 episodes, 1998
- Kristi Angus
- Â Controller / ... 3 episodes, 1999-2002
- J. Craig Sandy
- Â Agent Price / ... 3 episodes, 1997-1998
- Anna Adilman
- Â Dr'rel / ... 3 episodes, 1998-1999
- Tony Meyler
- Â Master Sergeant / ... 3 episodes, 1998-2001
- Mark Burgess
- Â Eugene Speakman / ... 3 episodes, 1999-2002
- Schroeder Todd
- Â Biowarrior 2 / ... 3 episodes, 1999
- Jane Luk
- Â Reporter / ... 3 episodes, 1999-2000
- Jennifer Foster
- Â Carrie Drake / ... 2 episodes, 1999-2001
- Michael Leder
- Â Test Subject / ... 2 episodes, 2000-2001
- David Christo
- Â Drone / ... 2 episodes, 2001
- Melissa Pollard
- Â Taelon Doctor / ... 2 episodes, 1998-1999
- Angelica Lisk-Hann
- Â Cop / ... 2 episodes, 1998
- Kristin Lehman
- Â Cynthia Clarkson 2 episodes, 1997-1998
- Nigel Bennett
- Â Major Raymond MacIntire 2 episodes, 1998
- Kate Greenhouse
- Â Abby Franklin / ... 2 episodes, 1999-2002
- Colette Stevenson
- Â Elyse Chapel / ... 2 episodes, 1997-2001
- Bobby Johnston
- Â Paul Chandler 2 episodes, 1997-1999
- Sarah Lafleur
- Â Dr. Andrea Mazar / ... 2 episodes, 2000-2001
- Larissa Laskin
- Â Heather North 2 episodes, 2000-2001
- Richard McMillan
- Â James Pike / ... 2 episodes, 1997-2000
- Peter Krantz
- Â Reverend Travis Murray 2 episodes, 1997-2000
- Lisa Ryder
- Â Kate Boone 2 episodes, 1997-2002
- Maurice Dean Wint
- Â Capt. Lucas Johnson / ... 2 episodes, 1998
- Andrew Airlie
- Â Coach Bickwell / ... 2 episodes, 1999-2002
- Deborah Odell
- Â Dr. Catharine Cox / ... 2 episodes, 1999-2002
- Vince Corazza
- Â Combs / ... 2 episodes, 1999-2001
- Chandra West
- Â Erica Vosser 2 episodes, 1999-2000
- Kerry Dorey
- Â Vorjak 2 episodes, 2001
- Ramona Milano
- Â Vera Rizzori 2 episodes, 1999-2001
- Victor A. Young
- Â Ha'gel 2 episodes, 2001
- Daniel Clark
- Â Yulyn 2 episodes, 2002
- Jody Racicot
- Â Bartender / ... 2 episodes, 1998-2000
- Richard Clarkin
- Â Mitchell / ... 2 episodes, 1999-2002
- Peter MacNeill
- Â Harry Winslow / ... 2 episodes, 1997-2001
- Greg Ellwand
- Â Lawrence Jantzen 2 episodes, 1999-2001
- Wendii Fulford
- Â Female Volunteer / ... 2 episodes, 2001-2002
- Laura Press
- Â Anne Portnoy 2 episodes, 1997-1998
- Rod Wilson
- Â Prajak / ... 2 episodes, 1999-2001
- Paulino Nunes
- Â Lucas Walker / ... 2 episodes, 2000-2001
- Inga Cadranel
- Â Agent Moxsan / ... 2 episodes, 2000-2001
- Michèle Duquet
- Â Ku'don / ... 2 episodes, 2000
- Dave Nichols
- Â Grant Fields / ... 2 episodes, 1999-2001
- Fiona Highet
- Â Belleye / ... 2 episodes, 1999-2000
- Dean McKenzie
- Â Detective Sam Nepps / ... 2 episodes, 2000-2001
- Rebecca Dicker
- Â Child Street 2 episodes, 2001-2002
- Patrick Garrow
- Â Bridge Hybird / ... 2 episodes, 2002
- Stephen Bogaert
- Â Gavin / ... 2 episodes, 1998-1999
- Patrick Chilvers
- Â Campanion Swat / ... 2 episodes, 1999
- Bill Lake
- Â Colonel Bastian 2 episodes, 2000-2001
- Scott Wickware
- Â Cop / ... 2 episodes, 2000-2001
- Derwin Jordan
- Â Albert Cooper / ... 2 episodes, 1998-2000
- Andrew Lewarne
- Â Philip Hart / ... 2 episodes, 1997-1998
- James Kee
- Â Rabbit / ... 2 episodes, 1998-1999
- Russell Yuen
- Â Tai-Chi Master / ... 2 episodes, 1999-2000
- Sean MacMahon
- Â Portal Guide 2 episodes, 2000-2001
- Steve Braun
- Â Portal Engineer / ... 2 episodes, 2000
- Matt Birman
- Â Mugger / ... 2 episodes, 1997-1998
- Stavroula Logothettis
- Â Kee'sha 2 episodes, 1998
- Barna Moricz
- Â Devon / ... 2 episodes, 1999-2000
- Donald Carrier
- Â Butler / ... 2 episodes, 1999-2000
- Chris Lamon
- Â Male Technician / ... 2 episodes, 1999
- Anne Marie DeLuise
- Â Angie / ... 2 episodes, 1998
- Wayne Ward
- Â Bud Archer / ... 2 episodes, 1999-2000
- Peter Mensah
- Â Alan / ... 2 episodes, 1998-1999
- Ron Van Hart
- Â SS Agent / ... 2 episodes, 1998-2000
- Ari Cohen
- Â Engineer / ... 2 episodes, 2000
- Roman Podhora
- Â Commander Yuri Kosygin / ... 2 episodes, 1999-2000
- Geoffrey Pounsett
- Â Mothership Engineer / ... 2 episodes, 1998-1999
- Christopher Crumb
- Â Mole Man / ... 2 episodes, 1999-2001
- Dean Armstrong
- Â Hotel Volunteer / ... 2 episodes, 1999-2000
- Eric Bryson
- Â Biowarrior 1 / ... 2 episodes, 1998-1999
- Geoffrey Smith
- Â Bartender / ... 2 episodes, 1998-2001
- Glyn Thomas
- Â Lab Attendant / ... 2 episodes, 1998-1999
- Roberta Angelica
- Â Vonda / ... 2 episodes, 1999-2001
- Kelly Fiddick
- Â Doors Courier / ... 2 episodes, 2001
- Beth Bovaird
- Â Technician 2 episodes, 1998
- Henry Korhonen
- Â Student #2 / ... 2 episodes, 1998-1999
- Jeffrey R. Smith
- Â Harry Bookman / ... 2 episodes, 1999
- Desmond Campbell
- Â Cop outside Cafe / ... 2 episodes, 1999
- Peter Kelly Gaudreault
- Â Agent Lassiter 1 episode, 1998
- Anaya Farrell
- Â Mit'gai 1 episode, 2000
- Darren McGuire
- Â Ashkhenaton / ... 1 episode, 2001-2002
- Brian Jagersky
- Â Construction Worker / ... 1 episode, 1997-2002
- Chuck Campbell
- Â Paramedic 1 episode, 2000-2001
- Andrea Lui
- Â Geisha 1 episode, 2000-2001
- Panou
- Â Security Guard 1 episode, 1998-1999
- Michael Daingerfield
- Â Sentry 1 episode, 1999
- Danny Lima
- Â Beat Cop / ... 1 episode, 1997-1999
- Alex Carter
- Â Keeler 1 episode, 2001
- Michael Sarrazin
- Â Dr. Charles Tenzer 1 episode, 2001
- Jim Thorburn
- Â Jonesy 1 episode, 2001
- Rachel McAdams
- Â Christine Bickwell 1 episode, 2002
- Gordon Currie
- Â Chase McBride 1 episode, 2002
- Beau Starr
- Â Lt. Gen. Kirkland 1 episode, 2002
- Robin Gammell
- Â Judge Jackson Claridge 1 episode, 2002
- James Gallanders
- Â Reese Jackson 1 episode, 2002
- Juan Chioran
- Â Raleigh St. Claire 1 episode, 2002
- Cherilee Taylor
- Â Nahema 1 episode, 2002
- Kelly Harms
- Â Ethan 1 episode, 2002
- Emily Hampshire
- Â Julie Payton 1 episode, 1997
- Jonathan Potts
- Â Larry Clark 1 episode, 1997
- Brett Porter
- Â Elijah Good 1 episode, 1997-1998
- Marvin Kaye
- Â Clifton Samuels 1 episode, 1997
- Paul Johansson
- Â Sloane 1 episode, 1998
- Shauna MacDonald
- Â Katya Petrenko 1 episode, 1998
- Blu Mankuma
- Â CIA Agent Morris Carter 1 episode, 1998
- Chris Wiggins
- Â Tim O'Malley 1 episode, 1998
- James Purcell
- Â Steve Burton 1 episode, 1998
- Michael Burgess
- Â Dr. Stephen Walkin 1 episode, 1998
- Jeff Wincott
- Â Lt. Jack Malley / ... 1 episode, 2000-2002
- John Ralston
- Â Dr. Raymond Fuchs / ... 1 episode, 2000
- Paul Miller
- Â Ken Mathews 1 episode, 2000
- Margot Kidder
- Â Dr. Josephine Mataros 1 episode, 2001
- Lynne Griffin
- Â Louise Jacobi 1 episode, 2001
- Don Francks
- Â Kyle Madrid 1 episode, 2001
- K.C. Collins
- Â R.J. 1 episode, 2001
- Roger Dunn
- Â Alistair Fitzpaine 1 episode, 2001
- Andrew Gillies
- Â Captain Sims 1 episode, 2001
- Shawn Roberts
- Â Jeremiah O'Brien 1 episode, 2002
- Cedric Smith
- Â Prof. Hightower 1 episode, 2002
- Maria Ricossa
- Â Dr. Morrison 1 episode, 2002
- Michael Anthony Rawlins
- Â Brother Franciscus 1 episode, 2002
- Claudette Mink
- Â Janice Greene 1 episode, 1997
- Brenda Bazinet
- Â Sarah Good 1 episode, 1997
- Sandra Caldwell
- Â Newscaster 1 episode, 1997
- Jeffrey Knight
- Â Bud Lanier 1 episode, 1997
- Shawn Doyle
- Â Lazarus 1 episode, 1998
- Johnny Cuthbert
- Â Crawford 1 episode, 1998
- Graeme Millington
- Â Ha'gel / ... 1 episode, 1998
- Diana Belshaw
- Â Dr. Sharpe 1 episode, 1998
- Mark Humphrey
- Â Biosurrogate 1 episode, 1999
- J.C. MacKenzie
- Â Dr. Michael Reed 1 episode, 1999
- Monika Schnarre
- Â Pearl Bell 1 episode, 1999
- Lori Alter
- Â Sylvia Ehrengraf 1 episode, 1999
- Page Fletcher
- Â Max Pratt 1 episode, 1999
- Terri Hawkes
- Â Detective Sherman 1 episode, 1999
- Lara Daans
- Â Arcadia Frost / ... 1 episode, 1999
- Bill MacDonald
- Â Det. Mitch Corelli 1 episode, 1999
- Ron Gabriel
- Â Arnold Creighton 1 episode, 1999
- Diego Fuentes
- Â Gonsalves 1 episode, 1999
- Steve Bacic
- Â Scott Pierce 1 episode, 2000
- Michael Hogan
- Â NYC Police Detective 1 episode, 2000
- Simon MacCorkindale
- Â Dennis Robillard 1 episode, 2000
- Ellen Dubin
- Â Shelley George 1 episode, 2000
- Chris William Martin
- Â Richard Palmer 1 episode, 2000-2001
- Tamara Gorski
- Â Hanna Klein 1 episode, 2000
- Stacy Grant
- Â Claire Yates 1 episode, 2000
- Patricia Zentilli
- Â Eva Gale 1 episode, 2000
- Jennie Raymond
- Â Kira Dorn 1 episode, 2000
- John Furey
- Â Lt. Roberts 1 episode, 2000
- Fiona Loewi
- Â Naraina 1 episode, 2000
- Stewart Bick
- Â Philip King 1 episode, 2000
- Peter Outerbridge
- Â Joe 1 episode, 2001
- Derek McGrath
- Â Pax 1 episode, 2001
- Cameron Daddo
- Â Jeff Marlowe 1 episode, 2001
- Kent Staines
- Â Balvak 1 episode, 2001
- Jane Watson
- Â Sue Broday 1 episode, 2001
- Philip Craig
- Â Prof. Zimmer 1 episode, 2002
- Jonathan Welsh
- Â Prof. Simon Ruttledge 1 episode, 2002
- Jonathan Rannells
- Â Sgt. Kirby 1 episode, 2002
- Joe Roncetti
- Â Nickle 1 episode, 1997
- Richard Denison
- Â Amos 1 episode, 1997
- Aron Tager
- Â Smackovich 1 episode, 1998
- Michael Rhoades
- Â Resistance Soldier 1 episode, 1998
- Judy Marshak
- Â Mrs. Beckett 1 episode, 1998
- Jim Codrington
- Â Blanchard / ... 1 episode, 1998
- Graham McPherson
- Â Man 1 episode, 1998
- Pamela Matthews
- Â Tiana 1 episode, 1998
- Vint Cerf
- Â Presidential Representative 1 episode, 1998
- Richard Bauer
- Â Atavus 1 episode, 1998
- Liisa Repo-Martell
- Â Amanda Hayes 1 episode, 1999
- Reagan Pasternak
- Â Belle Hartley 1 episode, 1999-2001
- Polly Shannon
- Â Dr. Joyce Belman 1 episode, 1999
- Joy Tanner
- Â Dr. Megan Catlet 1 episode, 1999
- Eugene Clark
- Â Mayor Carter Dubois 1 episode, 1999-2000
- Carolyn Dunn
- Â Kimera Hologram 1 episode, 1999
- John Bourgeois
- Â Colonel Bramson 1 episode, 1999
- Richard Eden
- Â Lockhart 1 episode, 1999
- Damir Andrei
- Â Tom Payne 1 episode, 1999
- Danielle Brett
- Â Sister Elizabeth Atherton 1 episode, 1999
- Bruce Clayton
- Â Sparrow 1 episode, 1999
- Rachael Crawford
- Â Samira Farid 1 episode, 2000
- Peter Keleghan
- Â Eli Hanson 1 episode, 2000
- Bruce Gray
- Â Edward Gale 1 episode, 2000
- Anne Openshaw
- Â Dr. Denise Kerlew 1 episode, 2000
- Géza Kovács
- Â Byron Durrant 1 episode, 2000
- Harrison Coe
- Â Volunteer Doctor 1 episode, 2000
- Jason Cadieux
- Â Declan Connors 1 episode, 2000
- Caley Wilson
- Â Tom 1 episode, 2000
- Robert Haley
- Â Dr. George Sato 1 episode, 2000
- Stephen Sparks
- Â Curtis 1 episode, 2000
- Anthony Lemke
- Â Gren 1 episode, 2001-2002
- Bree Williamson
- Â Woman Victim 1 episode, 2001
- Sadie LeBlanc
- Â Tina DeMay 1 episode, 2001
- Matthew Ferguson
- Â Zack Winslow 1 episode, 2001
- Landy Cannon
- Â Guy 1 episode, 2001
- Trevor Hayes
- Â Storm Trooper 1 episode, 2001
- Novie Edwards
- Â Liz Argyle 1 episode, 2001
- R.D. Reid
- Â Dr. Herber 1 episode, 2001
- Rav Toor
- Â Carlos 1 episode, 2001
- John Mcready
- Â Anchor 1 episode, 2001
- Andrea Roth
- Â Dr. Sprangler 1 episode, 2002
- Dan Petronijevic
- Â Eric Delmonico 1 episode, 2002
- Tony Nappo
- Â Smoke Hench 1 episode, 2002
- Elisa Moolecherry
- Â Mother 1 episode, 2002
- Fulvio Cecere
- Â Louie D'Onofrio 1 episode, 2002
- Marc Gomes
- Â Jaylis 1 episode, 2002
- David Eisner
- Â Hybird 1 episode, 2002
- Norma Jean Wick
- Â Patrice Ferguson 1 episode, 2002
- Santino Buda
- Â Vespasian 1 episode, 2002
- Robert Kingston
- Â Hybird Medical Attendant 1 episode, 2002
- Patrick Gallagher
- Â Prison guard 1 episode, 1997
- Trevor Blumas
- Â Jebediah Good 1 episode, 1997
- Ken Girotti
- Â Security Guard 1 episode, 1997
- Wanda Cannon
- Â Maiya's Mom 1 episode, 1998
- Wendy Lyon
- Â Sarah Boone 1 episode, 1998
- Tyrone Benskin
- Â Frank Rice 1 episode, 1998
- T.L. Forsberg
- Â Nell Hagar 1 episode, 1998
- Paul De La Rosa
- Â Technician 1 episode, 1998
- Lorin Raine
- Â Doors' Bodyguard 1 episode, 1998
- Scott Nichol
- Â Patient J 1 episode, 1998
- Paul Sherman
- Â Guard 1 episode, 1998
- Sibongile Nene
- Â Technician 1 episode, 1998
- Dan Lett
- Â Secret Service Agent 1 episode, 1999
- Mark Lutz
- Â Vernon Getz 1 episode, 1999
- Seann Gallagher
- Â Peter 1 episode, 1999
- David Berni
- Â Dr.Stark 1 episode, 1999
- Shawn Lawrence
- Â Carl Praeger 1 episode, 1999
- Craig Erickson
- Â Bettis 1 episode, 1999
- Victor Ertmanis
- Â Dale Anders 1 episode, 1999
- Stacey-Lea Marhue
- Â Female Technician 1 episode, 1999
- Max Piersig
- Â Steve Hartley 1 episode, 1999
- Lindy Booth
- Â Gina Richardson 1 episode, 2000
- Lexa Doig
- Â Joan Price 1 episode, 2000
- Kevin Hicks
- Â Dr. Heller 1 episode, 2000
- Kerry McPherson
- Â Kelly 1 episode, 2000
- Michael Fawkes
- Â Dr. Fields 1 episode, 2000
- Cheryl MacInnis
- Â Arlene Sato 1 episode, 2000
- Jeff Miller
- Â Middle-Aged Man 1 episode, 2000
- Robert Collins
- Â Michael Flannery 1 episode, 2000
- Rafael Petardi
- Â Fratalli 1 episode, 2001
- Marqus Bobesich
- Â Bartender 1 episode, 2001
- Tig Fong
- Â Vickers 1 episode, 2001
- Wayne Best
- Â Mark Rusk 1 episode, 2001
- Paula Barrett
- Â Judge 1 episode, 2001
- Brian Frank
- Â Man 1 episode, 2001
- Jamie Robinson
- Â Captain 1 episode, 2001
- Patrick Galligan
- Â Agent Charles Green 1 episode, 2001
- Marvin Hinz
- Â forensic Tech 1 episode, 2001
- Kim Coates
- Â Smoke 1 episode, 2002
- Simon Reynolds
- Â Dr. Copple 1 episode, 2002
- Andrew Moodie
- Â Dr. Paul Rogers 1 episode, 2002
- Andrew Martin
- Â Atavus Commander 1 episode, 2002
- Sam Moses
- Â Old Man 1 episode, 2002
- Saskia Garel
- Â Claire Jackson 1 episode, 2002
- Linette Doherty
- Â Spa Attendant 1 episode, 2002
- Richard Partington
- Â The Inquisitor 1 episode, 2002
- Paul McQuillan
- Â Dr. Stanwell 1 episode, 2002
- Angela Asher
- Â Frauke Manheim 1 episode, 1997
- Sam Malkin
- Â Reggie 1 episode, 1997
- Andrew Dinner
- Â Samuel Schmidt 1 episode, 1997
- David Mucci
- Â Conner 1 episode, 1998
- Vieslav Krystyan
- Â Saboteur 1 episode, 1998
- Nora Sheehan
- Â Beat Cop 1 episode, 1998
- Denis Lacroix
- Â Villager 1 episode, 1998
- Diego Chambers
- Â Travis Perkins 1 episode, 1998
- John Jarvis
- Â Portal Tech #1 1 episode, 1998
- Carole Mackereth
- Â Redhead 1 episode, 1998
- Maruska Stankova
- Â Dr. Elizabeth Hurwitz 1 episode, 1998
- Victor Young
- Â Hagel 1 episode, 1998
- Françoise Yip
- Â Beverly Wu 1 episode, 1999
- Katie Griffin
- Â Giselle 1 episode, 1999
- Karen Glave
- Â Sister Jenna 1 episode, 1999
- Tre Smith
- Â Dennis 1 episode, 1999
- Ylfa Edelstein
- Â Dr. Linford [Dr. Michaels in credits] 1 episode, 1999
- John Blackwood
- Â Dr. Kronkeit 1 episode, 1999
- Nicholas Kilbertus
- Â Dr. Meadows 1 episode, 1999
- Plato Fountidakis
- Â Security Sentry 1 episode, 1999
- Jerry Getty
- Â Screaming Patient 1 episode, 1999
- Paul Nunes
- Â Dawson 1 episode, 1999
- Helene Clarkson
- Â Laura Beeks 1 episode, 2000
- James Kidnie
- Â Troy Sarrazin 1 episode, 2000
- Jeff Geddis
- Â Crash 1 episode, 2000
- J.D. Nicholsen
- Â Karl Hansen 1 episode, 2000
- Robert Seeliger
- Â Kyle 1 episode, 2000
- Michael A. Miranda
- Â Tonio Arias 1 episode, 2000
- Alan Stenson
- Â Carson Briggs 1 episode, 2000
- Leif Anderson
- Â Deegan 1 episode, 2000
- Alon Nashman
- Â Dr. Sitro 1 episode, 2000
- Amanda Hancox
- Â Mom 1 episode, 2000
- Sten Eirik
- Â Samuel 1 episode, 2000
- Dennis Mirkovic
- Â Leko Keglivic 1 episode, 2000
- Kim Bourne
- Â Woman 1 episode, 2000
- Michael Cram
- Â Bob Brody 1 episode, 2001
- Karl Campbell
- Â Agent Zenzo 1 episode, 2001
- Damhnait Doyle
- Â Brunette 1 episode, 2001
- Zoe Heath
- Â Lisa Sagrentino 1 episode, 2001
- Tim MacMenamin
- Â Tenzer Chief Guard 1 episode, 2001
- Wayne Downer
- Â Bomber / ... 1 episode, 2001
- Suzanne Bennett
- Â Street's Mom 1 episode, 2001-2002
- Sarah Martyn
- Â Woman 1 episode, 2001
- Jonathan Crombie
- Â Dr. Field 1 episode, 2002
- Drew Nelson
- Â Damon 1 episode, 2002
- Kevin Jubinville
- Â Lt. Moran 1 episode, 2002
- Jermaine Brown
- Â Know-Ti-All Kid 1 episode, 2002
- Philip DeWilde
- Â Reporter 1 episode, 2002
- Peter McDonagh
- Â Buff Spa Attendant 1 episode, 2002
- Hrant Alianak
- Â Dr. Kaplan 1 episode, 1997
- Monique Mojica
- Â Mayor Ruiz 1 episode, 1997
- Hayley Lochner
- Â Rachel Good 1 episode, 1997
- Caroline Neilson
- Â Hospital Administrator 1 episode, 1997
- Chad McFadden
- Â Dan Spicer 1 episode, 1997
- Phillip Jarrett
- Â Portal Tech #2 1 episode, 1998
- Doug Lennox
- Â Colonel Edward Purcell 1 episode, 1998
- Toni Ellwand
- Â Worker 1 episode, 1998
- Elle Downs
- Â Maddy Johnson 1 episode, 1998
- Sandi Ross
- Â Chief Justice Hill 1 episode, 1998
- Vanessa Dylyn
- Â Russian Judge 1 episode, 1998
- Keith Kemps
- Â Soldier 1 episode, 1998
- Diana Reis
- Â Anna Sims 1 episode, 1998
- Roz Michaels
- Â Gladys Miller 1 episode, 1998
- Norma Clarke
- Â Madame Marie 1 episode, 1998
- Ales Falles
- Â Commuter 1 episode, 1998
- Elizabeth Fleischmann
- Â Programmer 1 episode, 1998
- Marina Sirtis
- Â Sister Margarette 1 episode, 1999
- Matthew Bennett
- Â Jerry Hanlon 1 episode, 1999
- Alex House
- Â Jessie 1 episode, 1999
- Raoul Bhaneja
- Â Student Leader 1 episode, 1999
- Shane Daly
- Â Commando 1 episode, 1999
- Barry Blake
- Â Gregos Dinesen 1 episode, 1999
- Maxine Guess
- Â Nurse 1 episode, 1999
- Michael Clarkin
- Â Mitchell 1 episode, 1999
- Jovanni Sy
- Â Suriyama 1 episode, 1999
- Michael Hall
- Â Team Leader 1 episode, 1999
- Bruce Beaton
- Â Father 1 episode, 2000
- Kate Zenna
- Â Erica Pierce 1 episode, 2000
- Angela Vint
- Â Nurse 1 episode, 2000
- John Watson
- Â Volunteer Guard 1 episode, 2000
- Adam Large
- Â Soundman 1 episode, 2000
- Alexandra Innes
- Â Nanny 1 episode, 2000
- Sheri Godfrey
- Â Technician 1 episode, 2000
- Heather Hodgson
- Â Dr. DeParis 1 episode, 2000
- Caleb Marshall
- Â Jason 1 episode, 2000
- Duff MacDonald
- Â Planet Guy 1 episode, 2001
- Sara Sahr
- Â Nurse 1 episode, 2001-2002
- Anthony Grieco
- Â Marco Margiori 1 episode, 2001
- Jake Simons
- Â Implant 1 episode, 2001
- Peter Sawyer
- Â Male Test Subject 1 episode, 2001
- Kristin Malia
- Â Ra'nar 1 episode, 2001
- James Thomas
- Â Tech 1 episode, 2001
- Dorian Harewood
- Â Herman Forrester 1 episode, 2002
- Jonas Chernick
- Â McKnight 1 episode, 2002
- Len Doncheff
- Â Bailey the Janitor 1 episode, 2002
- Bobby Manning
- Â Bartender 1 episode, 2002
- Chick Roberts
- Â Cab Driver 1 episode, 2002
- Robert Hayley
- Â Lead Security Guard 1 episode, 2002
- Trevor Haynes
- Â Handsom Hybrid 1 episode, 2002
- Eugene Oleksiuk
- Â Monk 1 episode, 2002
- Karen Holness
- Â Newscaster 1 episode, 1997
- Charlotte Arnold
- Â Little Girl 1 episode, 1997
- Brad Livingstone Black
- Â Young Boone 1 episode, 1997
- Robert Dodds
- Â Pieter Bakker 1 episode, 1997
- Ed Fielding
- Â Lucas Graf 1 episode, 1997
- Donna Holgate
- Â Female Reporter 1 episode, 1997
- Lee Brown
- Â Biker 1 episode, 1997
- Catherine McNally
- Â Taelon Official 1 episode, 1998
- Patricia Gage
- Â Rachel Purcell 1 episode, 1998
- Stephanie Anne Mills
- Â Tad 1 episode, 1998
- William Greenblatt
- Â Jamie Sims 1 episode, 1998
- Costin Manu
- Â Russian Delegation Leader 1 episode, 1998
- Trulie MacLeod
- Â Peggy Richardson 1 episode, 1998
- Raymond Accolas
- Â Claude Bertrand 1 episode, 1998
- Mark Huisman
- Â Karilian Replicant 1 episode, 1998
- Matthew Koller
- Â Cal Johnson 1 episode, 1998
- Derek Clifford
- Â Liberation Security 1 episode, 1998
- Henry Alessandroni
- Â Larry 1 episode, 1999
- Michael Caruana
- Â Peter Brogan 1 episode, 1999
- Ayumi Iizuka
- Â Geisha 1 episode, 1999
- Trent McMullen
- Â McKee 1 episode, 1999
- Marilyn Boyle
- Â Older Pearl 1 episode, 1999
- Julie Watson
- Â Teenaged Girl 1 episode, 1999
- Michelyn Smelle
- Â Council Woman 1 episode, 1999
- Dwayne Landry
- Â Incan King 1 episode, 1999
- Sheila Brand
- Â Mrs. Haynes 1 episode, 1999
- Ronda Bean
- Â Waitress 1 episode, 1999
- Edward Glen
- Â Missioner 2 1 episode, 2000
- Marvin Ishmael
- Â Saied 1 episode, 2000
- Balázs Koós
- Â Simms 1 episode, 2000
- Frank Nakashima
- Â Mr. Dzouri 1 episode, 2000
- Michael McLachlan
- Â Volunteer Trooper 1 episode, 2000
- Ola Sturik
- Â Reporter 1 episode, 2000
- Francisca Zentilli
- Â Nurse 1 episode, 2000
- Kori Shearstone
- Â Kid in Wheelchair 1 episode, 2000
- Taylor Price
- Â Amp 1 episode, 2000
- John Melissis
- Â Lead Agent 1 episode, 2000
- Stephanie Belding
- Â Ja'raal 1 episode, 2001
- Severn Thompson
- Â Ho'shin 1 episode, 2001
- Allana Harkin
- Â Female Test Subject 1 episode, 2001
- Markus Parilo
- Â Sir Peter 1 episode, 2001
- Terry Nicholas
- Â Nurse 1 episode, 2001
- Vladimir Jon Cubrt
- Â Victim 1 episode, 2002
- Jeff Kassel
- Â Dr. Stone 1 episode, 2002
- Dean Hagopian
- Â Judge #2 1 episode, 2002
- Roy T. Anderson
- Â Atavus Guardian 1 episode, 2002
- Sandra Jackson
- Â Screaming Woman 1 episode, 2002
- Bob McCown
- Â News Reporter 1 episode, 2002
- Malin Akerman
- Â Avatar 1 episode, 1997
- Jodie Dowdall
- Â Young Elyse 1 episode, 1997
- Steven Bush
- Â Jacob Laettner 1 episode, 1997
- Scott Gibson
- Â Officer Reed 1 episode, 1998
- Anand Rajaram
- Â Attendant / ... 1 episode, 1998
- Michael J. Reynolds
- Â President Thompson 1 episode, 1998
- John Paul Young
- Â FBI Agent 1 episode, 1998
- Terry Harford
- Â Police Sergeant 1 episode, 1998
- Matt Heney
- Â Rollins 1 episode, 1998
- Austin Schatz
- Â Academic #1 1 episode, 1998
- Meredith McGeachie
- Â TAD Leader 1 episode, 1999
- Hamish McEwan
- Â Recruiter 1 episode, 1999
- Shaun Austin-Olsen
- Â Dr. Whitfield 1 episode, 1999
- Brittaney Bennett
- Â Control Volunteer 1 episode, 1999
- Shannon Hile
- Â Claire Jantzen 1 episode, 1999
- Katherine Ashby
- Â Emily Langford 1 episode, 1999
- Richard Liss
- Â Holo Accountant 1 episode, 1999
- Angelo Tucci
- Â No Jackpatcher 1 episode, 1999
- Jagger Carlucci
- Â Jaridan 2 1 episode, 1999
- Chris Bickford
- Â Volunteer 1 episode, 2000
- Derek Bujalski
- Â Prisoner 1 1 episode, 2000
- John MacDonald
- Â Guard 1 episode, 2001
- Sean Bell
- Â Volunteer Guard 1 episode, 2001
- Toby Proctor
- Â Blake 1 episode, 2001
- Reuben Thompson
- Â Storm Trooper Captain 1 episode, 2001
- Anna Freake
- Â Exotic Woman 1 episode, 2001
- Greg Schneider
- Â Roberts 1 episode, 2002
- Michael Blake
- Â Hybrid Victim 1 episode, 2002
- Paul Brogren
- Â Hybrid Subject 1 episode, 2002
- Matt Gordon
- Â Bettor 1 episode, 1997
- Kurtys Kidd
- Â Da'an Double 1 episode, 1997
- George Dawson
- Â Abraham 1 episode, 1997
- Theo Brand
- Â Orderly 1 episode, 1997
- Anthony Sherwood
- Â Lincoln Auger 1 episode, 1998
- Richard Zeman
- Â Sergeant 1 episode, 1998
- Walker Boone
- Â Willie Collier 1 episode, 1998
- Kelly King
- Â New York Attendant 1 episode, 1998
- Lilia Yee
- Â Academic #2 1 episode, 1998
- Giuseppe Tancredi
- Â Docker 1 episode, 1998
- Jessica Greco
- Â Melanie 1 episode, 1999
- Thomas Mitchell
- Â Squad Commander 1 episode, 1999
- Jonathan Higgins
- Â Jeff 1 episode, 1999
- Peter Van Wart
- Â Sam Bell 1 episode, 1999
- Lawrence King
- Â Resistance Member 1 episode, 1999
- John Baktis
- Â Tom 1 episode, 1999
- Matt Redman
- Â Ty Jantzen 1 episode, 1999
- Anthony Ashbee
- Â Tall Man 1 episode, 1999
- Maureen Kirkpatrick
- Â Nurse 1 1 episode, 1999
- Susan Spencer
- Â Reporter 1 episode, 1999
- Brendan Wall
- Â Police Officer 1 episode, 2000
- Jean Pearson
- Â Holo Waiter 1 episode, 2000
- Ian Eugene Ryan
- Â Vince, Hostage 1 episode, 2000
- Lubomir Mykytiuk
- Â Sergeant Tessell 1 episode, 2001
- Jeffrey Kuhn
- Â Techno Reporter 1 episode, 2001
- Matt Marek
- Â Young Boone 1 episode, 1997
- Conrad Coates
- Â Rev. Billy Mitchell 1 episode, 1998
- Steve Cumyn
- Â Lab Tech 1 episode, 1998
- Christopher Kelk
- Â Gardner 1 episode, 1999
- Kevin Rushton
- Â Guard 1 episode, 1999
- Park Bench
- Â Client 1 episode, 1999
- Cameron Graham
- Â Nervous Man 1 episode, 1999
- Edward Jaunz
- Â Chuck 1 episode, 1999
- Joshua Lecker
- Â Ricky 1 episode, 1999
- Shawn Ashmore
- Â Max 1 episode, 2000
- Ksenia Solo
- Â Kathy Simmons 1 episode, 2000
- Craig Warnock
- Â Technician 1 episode, 2000
- Aman Maharaj
- Â Tad 1 episode, 2000
- Claudio Masciulli
- Â Rotund Man / ... 1 episode, 2001
- Lorne Hunchuck
- Â Atavus 1 episode, 2002
- Danny Mags
- Â 4 Year Old Liam 1 episode, 1998-2001
- M.J. Kang
- Â Bartender 1 episode, 1998
- Austin Strugnell
- Â Charles Burton 1 episode, 1998
- Henry Gomez
- Â African Representative 1 episode, 1998
- Sean Dick
- Â Ari 1 episode, 1998
- Paul Braunstein
- Â Tech 1 episode, 1999
- Steven Allerick
- Â Safe House Volunteer 1 episode, 1999
- Alex Poch-Goldin
- Â Dr. Alcott 1 episode, 1999
- Arlene Duncan
- Â Nurse 2 1 episode, 1999
- Norm Spencer
- Â Swat Team Leader 1 episode, 1999
- Marni Thompson
- Â Waitress 1 episode, 1999
- Duncan MacLeod
- Â FBI Swat II 1 episode, 1999
- Paul Wu
- Â Mikola 1 episode, 2000
- Nicolas Van Burek
- Â DP1 1 episode, 2001
- Courtney Hawkrigg
- Â Victim 1 episode, 2002
- Steve Boyle
- Â Boyfriend 1 episode, 1998
- Bryan Renfro
- Â Uniformed Tech 1 episode, 1998
- John Cleland
- Â Andrew 1 episode, 1998
- Alexa Gilmour
- Â Young Woman 1 episode, 1998
- Gene Mark
- Â Asian Representative 1 episode, 1998
- Bryan J. Thomas
- Â Student I 1 episode, 1999
- James Bulliard
- Â Darren Vorhees 1 episode, 1999
- Roy Lewis
- Â Surgeon 1 episode, 2001
- Steve Chamberlain
- Â Orderly 1 episode, 2002
- Kathy Maloney
- Â Exotic Beauty 1 episode, 1998
- Don Wilson
- Â M.P. 1 episode, 1998
- Andrea Mills
- Â Advanced Drone #1 1 episode, 1998
- Denise Fujiwara
- Â Maxine Chang 1 episode, 1998
- Randy Butcher
- Â Cop in Cafe 1 episode, 1999
- J.C. Kenny
- Â News Caster 1 episode, 1999
- Kylanna Lee
- Â Mayor's Young Friend 1 episode, 1999-2000
- Paul A. MacFarlane
- Â Doorman 1 episode, 1999
- In Surp Choi
- Â Guard II 1 episode, 1999
- Andrea Sorensen
- Â Female Jaridian 1 episode, 2000
- Joanna Jang
- Â Geisha 1 episode, 2001
- Sean Gallagher
- Â Advanced Drone #2 1 episode, 1998
- Dominic Cuzzocrea
- Â Derelect 1 episode, 1998
- Michelle Moffat
- Â Woman 1 episode, 1998
- John Boylan
- Â Glen Ballard 1 episode, 1999
- Peter Ellery
- Â Secret Service Agent 1 episode, 1999
- Marcus Hutchings
- Â Young Tortured Man 1 episode, 1999
- David Bolt
- Â Doctor 1 episode, 1998
- Steve Richard
- Â Guard 1 episode, 1998
- Neil Girvan
- Â Randy 1 episode, 1999
- David Roemmele
- Â John the Punk 1 episode, 1999
- Drake Thorens
- Â Student Leader 1 episode, 1999
- James Boles
- Â Swat Officer 1 episode, 1998
- Tracey Cook
- Â Dr. Hart 1 episode, 1999
- Daniel Enright
- Â Jantzen House Volunteer 1 episode, 1999
- Mark Terry
- Â Alien Pilot (uncredited) 6 episodes, 1997-1998
- Le Blanc
- Â Lt. Dumay (uncredited) 2 episodes, 1998-2001
- Matthew Galliford
- Â Taelon Volunteer Soldier (uncredited) 2 episodes, 1999
- Sugith Varughese
- Â Dr. Basi (uncredited) 1 episode, 1997
- Joanna Bennett
- Â Amish Woman (uncredited) 1 episode, 1997
- Michele Di Trani
- Â Zohar (uncredited) 1 episode, 1998
- Andrew Tomarin
- Â Atavus Da'an (uncredited) 1 episode, 1998
- Jill Fleischman
- Â Programmer (uncredited) 1 episode, 1998
- Carlo Rota
- Â Margolis (uncredited) 1 episode, 1999
- Michael Dyson
- Â Running Man (uncredited) 1 episode, 1999
- Joe Forbes
- Â Guard (uncredited) 1 episode, 1999
- Michael Sercerchi
- Â Agent (uncredited) 1 episode, 2000
- Edie Inksetter
- Â Art Gallery Owner (uncredited) 1 episode, 2001
- Jack Newman
- Â Dr. Samuel Foster (uncredited) 1 episode, 2001
- Darren Marsman
- Â Fletcher (uncredited) 2 episodes, 2001
- Ryan Cunningham
- Â Security Guard (uncredited) 1 episode, 2001
- Yvonne Maverick
- Â Time Traveler (uncredited) 1 episode, 2001
- Christy Ring
- Â Reporter (uncredited) 1 episode, 2002
- Domenic Cina
- Â Louie (uncredited) 1 episode, 2002