Spudvisor
Don Franklin

Commander Jonathan Ford (58 episodes)

Frank Welker

Darwin (voice) (58 episodes)

Roy Scheider

Captain Nathan Bridger (48 episodes)

Marco Sanchez

Sensor Chief Miguel Ortiz (45 episodes)

Michael DeLuise

Seaman Anthony Piccolo (35 episodes)

Kathy Evison

Lieutenant Lonnie Henderson (35 episodes)

Edward Kerr

Lieutenant James Brody (29 episodes)

John D'Aquino

Lt. Benjamin Krieg (23 episodes)

Ben Krieg (1 episode)

Stephanie Beacham

Dr. Kristin Westphalen (23 episodes)

Stacy Haiduk

Lieutenant Commander Katherine Hitchcock (23 episodes)

Royce D. Applegate

Chief Manilow Crocker (23 episodes)

Rosalind Allen

Dr. Wendy Smith (22 episodes)

Michael Stephen Costello

Secretary General McGath (14 episodes)

UEO Secretary General McGath (2 episodes)

Michael Ironside

Captain Oliver Hudson (13 episodes)

Elise Neal

Lieutenant J.J. Fredericks (13 episodes)

Richard Herd

Admiral Noyce (11 episodes)

Secretary General Noyce (1 episode)

Jesse Doran

General Thomas (6 episodes)

Kent McCord

Commander Scott Keller (5 episodes)

Dustin Nguyễn

Chief William Shan (4 episodes)

Ralph Wilcox

Mason Freeman (4 episodes)

Mark Fauser

Weapons Officer Phillips (4 episodes)

Timothy Omundson

Dr. Joshua Levin (4 episodes)

Andy Stahl

General Stassi (2 episodes)

General Armand Stassi (2 episodes)

Tim DeKay

Lawrence Deon (3 episodes)

Michael York

President Alexander Bourne (3 episodes)

Bruce Klassen

Military Person (1 episode)

Seaman (1 episode)

Ensign (1 episode)

Peggy O'Neal

Dr. Johansen (1 episode)

Dr. Kaufman (1 episode)

Anita (1 episode)

Brittany Snow

Hyperion Child (2 episodes)

James Shigeta

Vietnamese President Chi (2 episodes)

Mark Hamill

Tobias LeConte (2 episodes)

Roscoe Lee Browne

Dr. Raleigh Young (2 episodes)

Denis Arndt

Navy Quartermaster Bickle (2 episodes)

Dennis Neal

Military Police Guard (2 episodes)

Jonathan Banks

Maximillian Scully (2 episodes)

Tom Provost
Ava Dupree
Thom Sherman

Ensign Sheppard (2 episodes)

Gustavo Perez

Arab Prince (1 episode)

Caribbean Native (1 episode)

Brett Rice

UEO Guard (1 episode)

Dustin Thaw (1 episode)

Tom Nowicki

Dr. Slaussen (1 episode)

Mithor (1 episode)

Dorian Field

Helmswoman Tyler (1 episode)

Jenna (1 episode)

Steve Howard

Enriquez (1 episode)

Reporter #2 (1 episode)

George Colangelo

Frightened Man (1 episode)

Passenger (1 episode)

Steve Mastro Jr.
Paul Vroom

Lieutenant Commander Trask (1 episode)

Lieutenant (1 episode)

Gary Bristow

Lieutenant Abrams (1 episode)

Rick (1 episode)

Robert Small

UEO Surgeon General (1 episode)

Dr. Roberts (1 episode)

Hank Stone

Marine Sergeant (1 episode)

Cellmate (1 episode)

Brittany Murphy

Christine VanCamp (1 episode)

Luis Guzmán

General Guzmano (1 episode)

Bernie Casey

Admiral Vanalden (1 episode)

Dom DeLuise

Nick Piccolo (1 episode)

Dawn Robinson
Turhan Bey

Dimitri Rossovich (1 episode)

Seth Green

Mark 'Wolfman' (1 episode)

Dennis Christopher

Ambassador Dillington (1 episode)

Joe Seneca

Professor Bingham (1 episode)

Mimi Kuzyk

Laura Huxley (1 episode)

Julia Nickson

Lieutenant Commander Heiko Kimura (1 episode)

Alan Scarfe

Dr. Rubin Zellar (1 episode)

Udo Kier

Dr. Guy Peche (1 episode)

Yaphet Kotto

Captain Jack Clayton (1 episode)

Jill Engels

Helen Crocker (1 episode)

John Saint Ryan

Captain Finius Wideman (1 episode)

Terence Knox

Commander Michael VanCamp (1 episode)

Aki Aleong

Army General Tran (1 episode)

Todd Allen

Clay Marshall (1 episode)

John Maynard

Hauler Captain (1 episode)

Jason Stuart

Motivational Speaker (1 episode)

Tim Russ

Martin Clemens (1 episode)

Chaim Topol

Dr. Rafik Hassan (1 episode)

Jim Lau

Dr. Wong Fay Hung (1 episode)

Wanda De Jesus

Commander Pamela Lopez (1 episode)

Shelley Hack

Capt. Marilyn Stark (1 episode)

David Morse

Lenny Sutter (1 episode)

John Finn

Colonel Schrader (1 episode)

Sandra Hess

Dr. Karen Sommers (1 episode)

Charles Cyphers
Brad Hunt

Le Chein Guard (1 episode)

Leslie Hope

Marie Piccolo (1 episode)

Lindsay Frost

Savannah Rossovich (1 episode)

Steven Williams

The President of the USA (1 episode)

Michael Parks

George Le Chein (1 episode)

Justine Shapiro
Clark Heathcliffe Brolly

Renegade Sensor Chief (1 episode)

Michelle Holden

Earthcast Anchor (1 episode)

Buckley Norris

Territorial Governor (1 episode)

Sam Armato

Papal Emissary (1 episode)

Erick Avari

Lybyan Representative (1 episode)

Sandra Kinder

Italian Representative (1 episode)

Vachik Mangassarian

Tunisian Representative (1 episode)

Gene Ross

Louis Jacobi (1 episode)

Lance Patrick

Missing crewman (1 episode)

Stephen Kronish

Murray Goldwater (1 episode)

William Russ
Diana Frank

Mademoiselle (1 episode)

Leslie Hardy

Beautiful Woman (1 episode)

Ethan Glazer
Lauren Dennington
Renee Parent

Pretty Woman #2 (1 episode)

Ted Christino

Bridge Crewman (1 episode)

Tim Kelleher

Commando / Bowman (1 episode)

Bonnie Bartlett

Secretary General Andrea Dre (1 episode)

Dave Fennoy
Lucy Lin

Reporter #2 (1 episode)

Rod Britt

Reporter #4 (1 episode)

Fima Noveck

Confederate Head (1 episode)

Dale Swann

UEO Police Officer (1 episode)

Andrew Wasser

Biff Pickering (1 episode)

Fitz Houston
Rick Fitts

Traffic Policeman (1 episode)

Marianne Hagan

Cynthia Westphalen (1 episode)

Carlos Carrasco
Neil Giuntoli

Lieutenant Jessup Rienhardt (1 episode)

Matt Davison

Richard Huxley (1 episode)

Carla Capps

Arrival Hostess (1 episode)

Patti Harshey

Baritone Singer (1 episode)

Tim Powell
Tressa DiFiglia

Ice Cream Vendor (1 episode)

J.D. Sutton

Hysterical Man (1 episode)

Lamont Lofton

Suited Sentry (1 episode)

Lisa Rafel

Centsys (voice) (1 episode)

Amie Bluff

Cousin Angie (1 episode)

Danny Jacobsen

Weapons Officer (1 episode)

Mark Lainer

Construction Worker (1 episode)

Steve Zurk

Security Guard (1 episode)

Ian Sullivan

Dr. Wilhelm Brown (1 episode)

Elizabeth Fendrick

Mother of Young Girl (1 episode)

David Silverthorn

Dagwood's Attorney (1 episode)

Paul Hungerford

Ferris Wheel Operator (1 episode)

Nancy Barber
Russ Wheeler
David Spielberg

Inspector Donnegan (1 episode)

Robert Scott

Security Guard (1 episode)

Marc Macaulay

Colonel Manheim (1 episode)

Tom Celli

General Reed (1 episode)

Dottie Healy

McGrath's Assistant (1 episode)

Nicolas Surovy

Dr. William Crichton (1 episode)

Juan Fernández

Ilich Ramirez Colon (1 episode)

Damon Jones

Lieutenant Marrs (1 episode)

Sheri Cook
Peter Paul DeLeo

Soldier / Guard (1 episode)

Robert Catrini

Chief Customs Agent (1 episode)

Jack Harrell

Chief Justice (1 episode)

Eric Miles

McGath's Aide (1 episode)

Dan Bright
Kathy Poling

Ellen VanCamp (1 episode)

Dorothy Keller

Christine VanCamp (Senior) (1 episode)

Chris Edgerly
Nancy Duerr

Session Speaker (1 episode)

Oscar Corbella

Chilean Representative (1 episode)

Sean Mahabir

South American Delegate (1 episode)

Anita Endsley

Reporter / UEO Charter Member (1 episode)

Gil Lazier

Professor Kaplan (1 episode)

Mitchell Dean

Freeman's Henchman (1 episode)

Traber Burns

Captain John Corey (1 episode)

Jody Kiel

Commander Vargas (1 episode)

Char Richards

Leo / Club Security (1 episode)

Kenneth Zunder

Director of Photography (1 episode)

Geoffrey Schaaf

Director of Photography (1 episode)

Glenn R. Wilder

Stunt Coordinator (1 episode)

Cort Hessler