Roy Scheider
Captain Nathan Bridger (58 eps)
Jonathan Brandis
Lucas Wolenczak (58 eps)
Don Franklin
Commander Jonathan Ford (58 eps)
Ted Raimi
Lieutenant Tim O'Neill (58 eps)
Frank Welker
Darwin (voice) (58 eps)
Marco Sanchez
Sensor Chief Miguel Ortiz (45 eps)
Peter DeLuise
Dagwood (36 eps)
Michael DeLuise
Seaman Anthony Piccolo (35 eps)
Kathy Evison
Lieutenant Lonnie Henderson (35 eps)
Edward Kerr
Lieutenant James Brody (29 eps)
John D'Aquino
Lt. Benjamin Krieg (24 eps)
Stephanie Beacham
Dr. Kristin Westphalen (23 eps)
Stacy Haiduk
Lieutenant Commander Katherine Hitchcock (23 eps)
Royce D. Applegate
Chief Manilow Crocker (23 eps)
Rosalind Allen
Dr. Wendy Smith (22 eps)
Michael Stephen Costello
Secretary General McGath (16 eps)
Michael Ironside
Captain Oliver Hudson (13 eps)
Elise Neal
Lieutenant J.J. Fredericks (13 eps)
Richard Herd
Admiral Noyce (12 eps)
William Morgan Sheppard
The Professor (8 eps)
Karen Fraction
Dr. Perry (7 eps)
Jesse Doran
General Thomas (6 eps)
Kent McCord
Commander Scott Keller (5 eps)
Dustin Nguyen
Chief William Shan (4 eps)
Ralph Wilcox
Mason Freeman (4 eps)
Mark Fauser
Weapons Officer Phillips (4 eps)
Timothy Omundson
Dr. Joshua Levin (4 eps)
Andy Stahl
General Armand Stassi (4 eps)
Kristy Eisenberg
Hyperion (4 eps)
Tim DeKay
Lawrence Deon (3 eps)
Sam Sorbo
Mariah (3 eps)
Michael York
President Alexander Bourne (3 eps)
Robert Engels
Malcolm Lansdowne (3 eps)
Bruce Klassen
Ensign (3 eps)
Karyn Malchus
Alien (3 eps)
Peggy O'Neal
Anita (3 eps)
Brittany Snow
Hyperion Child (2 eps)
James Shigeta
Vietnamese President Chi (2 eps)
Mark Hamill
Tobias LeConte (2 eps)
Roscoe Lee Browne
Dr. Raleigh Young (2 eps)
Patricia Charbonneau
Elaine Morse (2 eps)
Denis Arndt
Navy Quartermaster Bickle (2 eps)
Kurt Smildsin
UEO Guard (2 eps)
Dennis Neal
Military Police Guard (2 eps)
Jonathan Banks
Maximillian Scully (2 eps)
Sarah Koskoff
Julianna (2 eps)
Brenda Siemer Scheider
Carol Bridger (2 eps)
Dan Hildebrand
Helmsman (2 eps)
Tom Provost
Ensign Filie (2 eps)
Ava Dupree
Dispatcher (2 eps)
Andre Dukes
Mars (2 eps)
Thom Sherman
Ensign Sheppard (2 eps)
Gustavo Perez
Arab Prince (2 eps)
Brett Rice
UEO Guard (2 eps)
Christopher M. Brown
Obatu (2 eps)
Mimi Lieber
Kellogg (2 eps)
Tom Nowicki
Mithor (2 eps)
Christinna Chauncey
Alien #2 (2 eps)
Jim Vickers
Medic (2 eps)
Leesa Castaneda
Desperate Woman (2 eps)
Dorian Field
Helmswoman Tyler (2 eps)
Elizabeth Rothan
Reporter (2 eps)
Christopher Miles
Manager (2 eps)
Steve Howard
Enriquez (2 eps)
George Colangelo
Frightened Man (2 eps)
Steve Mastro Jr.
Marine Captain (2 eps)
Leroy Mitchell Jr.
The Judge (2 eps)
Paul Vroom
Lieutenant (2 eps)
Timothy Bass
Detective (2 eps)
Gary Bristow
Rick (2 eps)
Michael Deeg
Trigg (2 eps)
Robert Small
Dr. Roberts (2 eps)
Michelle T. Carter
Aide (2 eps)
Hank Stone
Cellmate (2 eps)
Luis Guzmán
General Guzmano (1 eps)
Jonathan Mangum
Covington (1 eps)
Bernie Casey
Admiral Vanalden (1 eps)
David McCallum
Frank Cobb (1 eps)
Barry Primus
Frobe Ernst (1 eps)
Bradford Tatum
Jackson (1 eps)
Dom DeLuise
Nick Piccolo (1 eps)
Dawn Robinson
Sarah Toenin (1 eps)
Turhan Bey
Dimitri Rossovich (1 eps)
Seth Green
Mark 'Wolfman' (1 eps)
Dennis Christopher
Ambassador Dillington (1 eps)
Scott Coffey
Bobby (1 eps)
JoAnna Garcia
Iris (1 eps)
Joe Seneca
Professor Bingham (1 eps)
Rya Kihlstedt
Jessie (1 eps)
Derek Webster
Corbett (1 eps)
Mimi Kuzyk
Laura Huxley (1 eps)
John Bedford Lloyd
The Regulator (1 eps)
Julia Nickson
Lieutenant Commander Heiko Kimura (1 eps)
Alan Scarfe
Dr. Rubin Zellar (1 eps)
Udo Kier
Dr. Guy Peche (1 eps)
J.A. Preston
Charles (1 eps)
Yaphet Kotto
Captain Jack Clayton (1 eps)
Jill Engels
Helen Crocker (1 eps)
John Saint Ryan
Captain Finius Wideman (1 eps)
Dennis Lipscomb
Tucker (1 eps)
Kellie Martin
Cleo Walker (1 eps)
Elizabeth Storm
Claire (1 eps)
Terence Knox
Commander Michael VanCamp (1 eps)
Aki Aleong
Army General Tran (1 eps)
William Shatner
Milos Tezlof (1 eps)
Sherman Howard
Packard (1 eps)
Gregory Paul Martin
Marcus Rawlings (1 eps)
Todd Allen
Clay Marshall (1 eps)
John Maynard
Hauler Captain (1 eps)
Lewis Arquette
Kearny (1 eps)
Jennifer Landon
Waitress (1 eps)
Jack McGee
Mike Lutz (1 eps)
Jason Stuart
Motivational Speaker (1 eps)
Tim Russ
Martin Clemens (1 eps)
Topol
Dr. Rafik Hassan (1 eps)
Tony Denison
Bobby (1 eps)
Leslie Bega
Sandra (1 eps)
Raphael Sbarge
Avatar (1 eps)
Christopher Pettiet
Zachery Thomas (1 eps)
Robert Foxworth
Royce Shelton (1 eps)
Jim Lau
Dr. Wong Fay Hung (1 eps)
Wanda De Jesus
Commander Pamela Lopez (1 eps)
Shelley Hack
Capt. Marilyn Stark (1 eps)
David DeLuise
Manager (1 eps)
David Morse
Lenny Sutter (1 eps)
John Finn
Colonel Schrader (1 eps)
Holly Gagnier
Rachel (1 eps)
Charlton Heston
Abalon (1 eps)
Luca Bercovici
The Marauder (1 eps)
Sandra Hess
Dr. Karen Sommers (1 eps)
Alison Moir
Alison (1 eps)
Charles Cyphers
Calvin Shelley (1 eps)
Brad Hunt
Le Chein Guard (1 eps)
Carl Lumbly
Lamm (1 eps)
Leslie Hope
Marie Piccolo (1 eps)
Jack Blessing
Gaye (1 eps)
Rob Youngblood
Kaman (1 eps)
Kristoffer Tabori
Dr. Wolenczak (1 eps)
Lindsay Frost
Savannah Rossovich (1 eps)
Bryan Friday
Waiter (1 eps)
David Marciano
Mack Stumpp (1 eps)
Felicity Waterman
Mika (1 eps)
Hank Stratton
Maxwell (1 eps)
Steven Williams
The President of the USA (1 eps)
Michael Parks
George Le Chein (1 eps)
Michael H. Moss
Lee Colzi (1 eps)
Monique Mannen
Hostess (1 eps)
Eric DaRe
Maxwell (1 eps)
Leo Gordon
Smith (1 eps)
Rebecca Stanley
Aunt Jenny (1 eps)
Justine Shapiro
Cmdr. Williams (1 eps)
Clark Heathcliffe Brolly
Renegade Sensor Chief (1 eps)
John Schafer
Pollack (1 eps)
Michelle Holden
Earthcast Anchor (1 eps)
Buckley Norris
Territorial Governor (1 eps)
Michelle Sullivan
Crew Member (1 eps)
Sushil Tyagi
Helmsman (1 eps)
Sam Armato
Papal Emissary (1 eps)
Erick Avari
Lybyan Representative (1 eps)
Patricia Herd
Wife (1 eps)
Sandra Kinder
Italian Representative (1 eps)
Vachik Mangassarian
Tunisian Representative (1 eps)
Gene Ross
Louis Jacobi (1 eps)
Jodi Lyn Brockton
Officer Wilson (1 eps)
Lance Patrick
Missing crewman (1 eps)
Jean Barrett
Williams (1 eps)
Stephen Kronish
Murray Goldwater (1 eps)
Rachael Harris
Rose (1 eps)
Derrick Hatcher
Ensign (1 eps)
William Russ
Rusty Thomas (1 eps)
Jonathan Dohring
Matthew (1 eps)
Robert Dohring
Brawley (1 eps)
Kimble Jemison
Ensign (1 eps)
George Marshall Ruge
Torrance (1 eps)
Diana Frank
Mademoiselle (1 eps)
Leslie Hardy
Beautiful Woman (1 eps)
Karen Racicot
Teacher (1 eps)
Tody Bernard
Butch (1 eps)
Hani Al Naimi
Olden (1 eps)
Ethan Glazer
Gibby Sutter (1 eps)
Bari Hochwald
Joan Sutter (1 eps)
Peter Sands
Cobber (1 eps)
David Correia
Buck (1 eps)
Lauren Dennington
Pretty Woman #1 (1 eps)
Renee Parent
Pretty Woman #2 (1 eps)
Ted Christino
Bridge Crewman (1 eps)
Una Damon
Sakata (1 eps)
Ellen Leyva
Reporter (1 eps)
Tim Kelleher
Commando / Bowman (1 eps)
Michael Reilly Burke
Commando (1 eps)
Iilana B'tiste
Commando (1 eps)
Brent Hinkley
Commando (1 eps)
Al Rodrigo
Commando (1 eps)
Philip Tan
Commando (1 eps)
Sandy McPeak
Grant (1 eps)
Francis X. McCarthy
Jones (1 eps)
Jane Rumbaua
Hostess (1 eps)
Matt Landers
Dinato (1 eps)
Jonathan Nichols
Tom Green (1 eps)
Anthony Powers
Tom Riley (1 eps)
Ryan Alosio
Assistant (1 eps)
Christopher James Miller
Caesar Tetzlof (1 eps)
Herman Poppe
UEO Officer (1 eps)
Ksenia Prohaska
Serbian (1 eps)
Bonnie Bartlett
Secretary General Andrea Dre (1 eps)
Dave Fennoy
Reporter #1 (1 eps)
Lucy Lin
Reporter #2 (1 eps)
Hannah Sussman
Reporter #3 (1 eps)
Rod Britt
Reporter #4 (1 eps)
Leon Morenzie
General (1 eps)
Fima Noveck
Confederate Head (1 eps)
Dian Kobayashi
Head #2 (1 eps)
H.M. Wynant
Head #3 (1 eps)
Paul Napier
Head #4 (1 eps)
Patricia Forte
Head #5 (1 eps)
Dale Swann
UEO Police Officer (1 eps)
Tony Winters
Color Guard (1 eps)
Andrew Wasser
Biff Pickering (1 eps)
Matthew Sheehan
Shapra (1 eps)
Christopher Carroll
Policeman (1 eps)
Fitz Houston
Policeman #2 (1 eps)
Rick Fitts
Traffic Policeman (1 eps)
Gary Eimiller
Bartender (1 eps)
Michael G. Kelley
Brother (1 eps)
Marianne Hagan
Cynthia Westphalen (1 eps)
Carlos Carrasco
Colonel Miguel (1 eps)
Garfield Bright
Malique (1 eps)
Guillermo Zapata
Policeman (1 eps)
Patricia Harty
Jordan (1 eps)
Tom Henschel
Rosenthal (1 eps)
Neil Giuntoli
Lieutenant Jessup Rienhardt (1 eps)
K.D. Edwards
Micanopy (1 eps)
Robin O'Dell
UEO Tracker (1 eps)
Joe Candelora
Trooper (1 eps)
Bill Welter
Jim Huxley (1 eps)
Matt Davison
Richard Huxley (1 eps)
Thomas R. Martin
Bridger's Son (1 eps)
Keith Hudson
Tyler (1 eps)
Donn Lamkin
Waiter (1 eps)
Jennifer Sky
Shop Girl (1 eps)
Carla Capps
Arrival Hostess (1 eps)
Patti Harshey
Baritone Singer (1 eps)
Tim Powell
Colony Man (1 eps)
Marty Stonerock
Woman (1 eps)
Bill Cordell
Colonist (1 eps)
Butch Brickell
Looter (1 eps)
Patricia Kennell Carroll
Doctor (1 eps)
Tressa DiFiglia
Ice Cream Vendor (1 eps)
Kelly Morgan
Aaron (1 eps)
J.D. Sutton
Hysterical Man (1 eps)
Lamont Lofton
Suited Sentry (1 eps)
Jonathan Bouck
Boy (1 eps)
Heather De Oreo
Girl (1 eps)
Lisa Rafel
Centsys (voice) (1 eps)
April McCarrick
Bridge crew (1 eps)
Amie Bluff
Cousin Angie (1 eps)
Bob Wells
Teller (1 eps)
Danny Jacobsen
Weapons Officer (1 eps)
Steve Purnick
Lab Tech (1 eps)
Mark Lainer
Construction Worker (1 eps)
Steve Zurk
Security Guard (1 eps)
Ray Sands
Policeman (1 eps)
Roger Ranney
Hansen (1 eps)
Nick Kurtz
Thompson (1 eps)
Scott Reichert
Soldier (1 eps)
Punky Leonard
Dr. Meyers (1 eps)
Jack Swanson
Dr. Dharavi (1 eps)
Lehua Reid
Lt. Magre (1 eps)
Ian Sullivan
Dr. Wilhelm Brown (1 eps)
Elizabeth Fendrick
Mother of Young Girl (1 eps)
Mikki Scanlon
Sheila (1 eps)
David Silverthorn
Dagwood's Attorney (1 eps)
Steve Raulerson
Desk Clerk (1 eps)
Pat Carlin
Nun (1 eps)
Tim Goodwin
Waiter (1 eps)
Christina Ritzi
Woman in Bar (1 eps)
Paul Hungerford
Ferris Wheel Operator (1 eps)
Nancy Barber
Anchorperson (1 eps)
Russ Wheeler
Jury Foreman (1 eps)
Parker Whitman
Mike Rainer (1 eps)
T.E. Russell
Ben (1 eps)
Tony Sago
Paulie (1 eps)
Charles Gitonga Maina
Professor Obatu (1 eps)
Patrick Bresnyan
Crewman (1 eps)
Max Brown
Dr. Kirby (1 eps)
David Spielberg
Inspector Donnegan (1 eps)
Michael A. Nickles
David (1 eps)
Jeff Moldovan
Robert (1 eps)
Melanie Adams
Stacy (1 eps)
Robert Scott
Security Guard (1 eps)
Marc Macaulay
Colonel Manheim (1 eps)
Tom Celli
General Reed (1 eps)
Dottie Healy
McGrath's Assistant (1 eps)
Charles Noel
Preacher (1 eps)
Nicolas Surovy
Dr. William Crichton (1 eps)
Patricia Matthews
Mrs. Crichton (1 eps)
Dana Tyson
Dinah (1 eps)
Dean Cudworth
Guard (1 eps)
Danny Gil
Pilot (1 eps)
Brian Ward
UEO Guard (1 eps)
Pete Penuel
Man (1 eps)
Richard Casey
Old Man (1 eps)
Paul Darby
Doctor (1 eps)
Tamara Tunie
Laura (1 eps)
Robert Herrick
Sergeant (1 eps)
Leif Riddell
Eddie (1 eps)
Juan Fernández
Ilich Ramirez Colon (1 eps)
Marty Connell
Co-Pilot (1 eps)
Scott Coyote
Plane Guard (1 eps)
Damon Jones
Lieutenant Marrs (1 eps)
Paul Kiernan
Shepps (1 eps)
Phillip Martinez
Janitor (1 eps)
Lou Bedford
Johnson (1 eps)
Vivienne Sendaydiego
Booth (1 eps)
Donna Preudhomme
Young Woman (1 eps)
Wolfgang S. Zechmayer
Refugee (1 eps)
Saadia Persad
Hostess (1 eps)
Avis-Marie Barnes
Female Hauler (1 eps)
Jim R. Coleman
Tech (1 eps)
Cameron Thor
Dumont (1 eps)
Kristian Truelsen
Technician (1 eps)
Sheri Cook
Young Girl (1 eps)
Peter Paul DeLeo
Soldier / Guard (1 eps)
Holly Butler
Bethmay (1 eps)
Crew Preston
Jackben (1 eps)
Robert Catrini
Chief Customs Agent (1 eps)
Jack Harrell
Chief Justice (1 eps)
Eric Miles
McGath's Aide (1 eps)
Dan Matisa
Tyler (1 eps)
Pauline Locsin
Ecotopian (1 eps)
Kathy Alzado Murray
Holo Woman (1 eps)
Candice Critchfield
Supervisor (1 eps)
Dan Bright
Technician (1 eps)
Kathy Poling
Ellen VanCamp (1 eps)
Dorothy Keller
Christine VanCamp (Senior) (1 eps)
Lee Dawson
Ross (1 eps)
Chris Edgerly
Ross' Friend (1 eps)
Nancy Duerr
Session Speaker (1 eps)
Oscar Corbella
Chilean Representative (1 eps)
Phyllis Fludd White
Chad Delegate (1 eps)
Sean Mahabir
South American Delegate (1 eps)
Anita Endsley
Reporter / UEO Charter Member (1 eps)
John H. Brennan
Jason Pardee (1 eps)
Gil Lazier
Professor Kaplan (1 eps)
James Ritz
Jeremiah (1 eps)
Georges Wilson
Admiral (1 eps)
Rick Tempesta
Guard (1 eps)
Steve Arroyo
Armed Guard (1 eps)
Mitchell Dean
Freeman's Henchman (1 eps)
Traber Burns
Captain John Corey (1 eps)
Jody Kiel
Commander Vargas (1 eps)
David B. Fang Yuen
Chaodai Pilot (1 eps)
Damon Preston
Lost Boy (1 eps)
Char Richards
Leo / Club Security (1 eps)
Mark Brown
Doorman (1 eps)