- Linden Ashby
- Â Lorne Cash 13 episodes, 1997-1998
- Allison Smith
- Â Maxine 'Max' London 13 episodes, 1997-1998
- Bruce McCarty
- Â Micah Simms 13 episodes, 1997-1998
- Keith Szarabajka
- Â Piotr 'Shank' Reshankov / ... 5 episodes, 1997-1998
- D.D. Howard
- Â Yolanda Trench 3 episodes, 1997-1998
- Patrick Macnee
- Â Dr. Quentin / ... 3 episodes, 1997-1998
- Larry Marks
- Â Nick / ... 3 episodes, 1997
- Barney McFadden
- Â Jack Hendricks 3 episodes, 1997
- Alec Mapa
- Â Andy Shawn 2 episodes, 1997-1998
- Ben Masters
- Â General Sam Wellish 2 episodes, 1997
- Michael Weatherly
- Â James Cash 1 episode, 1997
- David Graf
- Â Ivan Rogov 1 episode, 1997
- Susan Walters
- Â Margo DeSalle 1 episode, 1997
- Cotter Smith
- Â Adam Quill 1 episode, 1997
- Titus Welliver
- Â Sebastian Dane 1 episode, 1998
- Kim Johnston Ulrich
- Â Allegra Markovich 1 episode, 1998
- Larry Drake
- Â Leo Ludwig 1 episode, 1998
- Bruce McGill
- Â Andrei Dupchek 1 episode, 1997
- Charles Frank
- Â Senator Robert Dwyer 1 episode, 1997
- Drew Snyder
- Â Frank Kolleeny 1 episode, 1997
- John Prosky
- Â Hale 1 episode, 1998
- Hank Stratton
- Â Jefferson Wayne 1 episode, 1998
- Morgan Hunter
- Â Colonel 1 episode, 1998
- Fredric Lehne
- Â C.J. 1 episode, 1997
- Christopher Gorham
- Â Daniel / ... 1 episode, 1997
- Troy Evans
- Â Sheriff Porter 1 episode, 1998
- Dana Delany
- Â Honey Trapp 1 episode, 1997
- Peter Lupus
- Â Mr. White 1 episode, 1997
- Stéphanie Schneider
- Â Elaina 1 episode, 1997
- Wayne Pére
- Â Bob 1 episode, 1998
- Eve Brenner
- Â Elderly Woman 1 episode, 1997
- Lou Antonio
- Â Premier Zostrov 1 episode, 1998
- Ron Perkins
- Â Dr. John Russell 1 episode, 1998
- Stephen Quadros
- Â Commando #1 1 episode, 1997
- Michael Paul Chan
- Â Mr. Eng 1 episode, 1998
- Bari K. Willerford
- Â Baines 1 episode, 1998
- James Tartan
- Â Dr. Perl 1 episode, 1997
- Richard Grove
- Â Zorin 1 episode, 1998
- Alex Wexo
- Â Federal Agent #1 1 episode, 1997
- Will Rothhaar
- Â Kid 1 episode, 1998
- Solomon Abrams
- Â Mutterer 1 episode, 1997
- Daniel Roebuck
- Â Anthony J. Poll 1 episode, 1997
- Jim Beaver
- Â Thornbush 1 episode, 1997
- John de Lancie
- Â Dr. David Lynk 1 episode, 1997
- Mitchell Ryan
- Â Morganthal 1 episode, 1997
- Holly Gagnier
- Â Velocity Rapture 1 episode, 1997
- Obba Babatundé
- Â Lieutenant Wardell 1 episode, 1997
- Larry Poindexter
- Â Jackson 1 episode, 1997
- Bob Minor
- Â Marine Colonel 1 episode, 1997
- Joseph Whipp
- Â Admiral Shaw 1 episode, 1997
- Maury Ginsberg
- Â Frankenheimer 1 episode, 1997
- Aaron Lustig
- Â Flunky / ... 1 episode, 1997
- Carl Ciarfalio
- Â Roth 1 episode, 1997
- Rocky McMurray
- Â Guard #1 1 episode, 1997
- Tyler Layton
- Â Darlene 1 episode, 1997
- Mark Arnott
- Â Andrew Mallik 1 episode, 1997
- Frank Noon
- Â Underling 1 episode, 1997
- Bob Larkin
- Â The Priest 1 episode, 1997
- David Moreland
- Â Steven 1 episode, 1997
- Rod Arrants
- Â The Businessman 1 episode, 1997
- Lucy Lin
- Â ECHO Staffer 1 episode, 1997
- Jeff Austin
- Â Dr. Henry 1 episode, 1997
- Darlene Kardon
- Â Shank's Mom 1 episode, 1997
- Mark Daniel Cade
- Â Frank 1 episode, 1997
- Robert Pike Daniel
- Â Mark St. John 1 episode, 1997
- David Clement
- Â Marine Guard #1 1 episode, 1997
- Mark J. Goodman
- Â Fyodor Kulyigan 1 episode, 1997
- Jennifer Birchfield-Eick
- Â Trudy 1 episode, 1997
- Tamara Fay
- Â Girlfriend #1 1 episode, 1997
- Jason Ross-Azikiwe
- Â Guard #2 1 episode, 1997
- Armand Reiser
- Â Joe 1 episode, 1997
- Jason Grant Smith
- Â The Stockbroker 1 episode, 1997
- Bobbie Blackford
- Â Masha Novikov 1 episode, 1997
- Daniel Leslie
- Â The Doctor 1 episode, 1997
- Tom Deem
- Â Red Cross Worker 1 episode, 1997
- Karry Marks
- Â Nick 1 episode, 1997
- Denise Crosby
- Â Chrysalis 1 episode, 1998
- Carol Huston
- Â Victoria 1 episode, 1998
- John Eric Bentley
- Â Head Marine 1 episode, 1998
- Natasha Pavlovich
- Â Sofia Crack 1 episode, 1998
- Rebecca Carlton
- Â Whitney Slate 1 episode, 1998
- Bert Kramer
- Â Old Man 1 episode, 1998
- Melissa Young
- Â Embassy Guest 1 episode, 1998
- Heinrich James
- Â Thief 1 episode, 1998
- Robert Culp
- Â Crazed Terrorist (uncredited) 1 episode, 1997
- James Lew
- Â Killer (uncredited) 1 episode, 1997
- Cazimir Milostan
- Â Echo Technician (uncredited) 1 episode, 1997
- Maridean Mansfield Shepard
- Â Infected Woman in Park (uncredited) 1 episode, 1998
- Michael Franklin
- Â Gino (uncredited) 1 episode, 1998