Characters played by Richard Basehart
Adm. Harriman Nelson
Admiral Nelson
Adm. Nelson
Admiral Harriman Nelson
Adm. Nelson puppet
Capt. Seamus O'Hara Nelson
Characters played by David Hedison
Capt. Lee B. Crane
Captain Crane
Capt. Crane
Captain Lee Crane
Capt. Lee Crane
Characters played by Robert Dowdell
Chip Morton
Lt. Comdr. Chip Morton
Lt. Cmdr. Chip Morton
Characters played by Del Monroe
Kowalski
Panelman
Characters played by Terry Becker
Chief Francis Ethelbert Sharkey
Chief Sharkey
Characters played by Paul Trinka
Patterson
Malloy
Sonar Man
Characters played by Arch Whiting
Sparks
Characters played by Richard Bull
Doctor
Seaview Doctor
Characters played by Henry Kulky
Chief Curley Jones
Curley Jones
Characters played by Allan Hunt
Riley
Stuart Riley
Characters played by Patrick Culliton
Crewman
Radar
Alien #1
Corpsman
Dunlap
Guard
Mac
Radio Man
Seaview Guard
Sonar Man
Characters played by Derrik Lewis
Lieutenant O'Brien
O'Brien
Yeoman Officer
Characters played by Paul Carr
Clark
Benson
Casey Clark
Characters played by Mark Slade
Malone
Crewman
Characters played by Wayne Heffley
Seaview Doctor
Characters played by Jerry Catron
Buccaneer
Crewman
Leader
Richards
Characters played by Skip Homeier
Dr. Jenkins
Robek
Sen. William Dennis
Characters played by Warren Stevens
Commander Van Wyck
Forester
Sam Garrity
Characters played by Alfred Ryder
Krueger
Dr. Bergstrom
Characters played by Henry Jones
Mr. Pem
Dr. Sprauge
Characters played by Jan Merlin
Henderson
Lt. Froelich
Victor Vail
Characters played by Michael Pate
Colonel
Gelid
Hamid
Characters played by Malachi Throne
Blackbeard the Pirate
Dr. Shinera
General Gamal
Characters played by Susan Flannery
Katie
Stenographer
The Sister
Characters played by Robert Doyle
Blake
Pryor
Werden
Characters played by James Frawley
Manolo
Semenev
Smiling Jack
Characters played by Werner Klemperer
Brainwasher
Dr. Gamma
Fredric Cregar
Characters played by Joe E. Tata
Corpsman
Farrell
Frank Brent
Characters played by Lloyd Bochner
Gen. Hobson
Martin Davis
Characters played by John Van Dreelen
Admiral the Baron Gustave Von Neuberg
Schroder
Characters played by Peter Mark Richman
Gantt
John Hendrix
Characters played by Michael Ansara
Capt. Tomas Ruiz
Malinoff
Characters played by David Sheiner
Chandler
Josip
Characters played by Barry Atwater
Logan
Major General Benedict Arnold
Characters played by Kevin Hagen
Holden
Komal
Characters played by Victor Lundin
Alien
Hansjurg
Characters played by Bert Freed
Dr. Ullman
Halden
Characters played by Vitina Marcus
Lani
Native Girl
Characters played by Ford Rainey
President Henry Talbot McNeal
Characters played by Harry Davis
Konstantin
Templeton
Characters played by Gene Dynarski
Centaur I
Guard
Characters played by Robert Cornthwaite
Gen. Reed Michaels
Zeigler
Characters played by Bruce Mars
Bosun's Mate
Guard
Characters played by Lew Gallo
Kruger
Stroller
Characters played by John Zaremba
Admiral Johnson
Dr. Claude Selby
Characters played by Françoise Ruggieri
Brenda
Capt. Verna Trober
Characters played by Booth Colman
Chairman
Characters played by Robert Lipton
Helmsman
Radio Man
Characters played by Frank Babich
Corpsman
Frost Man #2
Characters played by Robert Carson
Jurgenson
S.A.C. General
Characters played by Brendan Dillon
Captain Jacob Wren
Torganson
Characters played by Paul Comi
Hawkins
Lt. Bishop
Characters played by George Keymas
Igor
Zane
Characters played by Jock Gaynor
Dr. Randolph Mason
Lars
Characters played by James Doohan
Lawrence Tobin
Characters played by Roy Jenson
Crewman
Johnson
Characters played by William Hudson
Capt. John Phillips
Captain Shire
Characters played by Frank Graham
Danny
Villager
Characters played by Nigel McKeand
Sonar
Characters played by Seymour Cassel
Jensen
Characters played by Dawson Palmer
Monster
The Monster
Characters played by Brent Davis
Crewman
Peters
Characters played by Ivan Triesault
Commander
Klaus
Characters played by Alfred Shelly
Chairman
Murphy
Characters played by June Lockhart
Ellen Bryce
Characters played by Carroll O'Connor
Old John
Characters played by Nick Adams
Jason
Characters played by Eddie Albert
Dr. Fred Wilson
Characters played by Viveca Lindfors
Dr. Laura Rettig
Characters played by Everett Sloane
Gronski
Characters played by Richard Carlson
Lars Mattson
Characters played by Rita Gam
Detta
Characters played by Hurd Hatfield
Leopold Zeraff
Characters played by Charles McGraw
Rear Adm. Tobin
Characters played by David Opatoshu
Reisner
Characters played by Carl Reindel
Evans
Characters played by Mario Alcalde
Major Amadi
Characters played by Robert Duvall
Zar
Characters played by Leslie Nielsen
Adams
Characters played by Edward Asner
Brynov
Characters played by John Cassavetes
Everett Lang
Characters played by Victor Buono
Tabor Ulrich
Characters played by Karen Steele
Cara
Characters played by Michael Constantine
Dr. Brand
Characters played by John Anderson
Dr. Janus
Characters played by Henry Silva
Gen. Tau
Characters played by George Sanders
Fenton
Characters played by Gia Scala
Dr. Katya Markova
Characters played by Ina Balin
Litchka
Characters played by J.D. Cannon
Falk
Characters played by John McGiver
Alexander Corby
Characters played by Harold J. Stone
Admiral Jiggs Starke
Characters played by Roger C. Carmel
Admiral Halder
Characters played by Torin Thatcher
MacDougall
Characters played by Phillip Pine
Ryan
Characters played by Cyril Delevanti
Noah Grafton
Characters played by Simon Scott
Reston
Characters played by Pilar Seurat
Moana
Characters played by Donald Harron
Corbett
Characters played by Renzo Cesana
Count Ferdie Staglione
Characters played by Robert Loggia
Dr. Crandall Ames
Characters played by James Darren
Omir
Characters played by Paul Fix
Sam Burke
Characters played by Nehemiah Persoff
Dobbs
Characters played by Albert Salmi
Brent
Characters played by Don Gordon
Stan Kowalski
Characters played by Hugh Marlowe
Bainbridge Wells
Characters played by Charles Aidman
Dr. Hollis
Characters played by Arthur Hill
Lindsay
Characters played by Gary Merrill
Park
Characters played by John Lupton
Dr. Bradley
Characters played by William Smithers
Ben Wilson
John Wilson
Characters played by David J. Stewart
Weber
Characters played by Vincent Price
Professor Multiple
Characters played by Don Dubbins
C.P.O. Beach
Characters played by John Crawford
Alpha
Characters played by Woodrow Parfrey
Leo Brock
Characters played by Michael Dunn
Clown
Characters played by Victor Jory
Dr. Turner
Characters played by Lyle Bettger
Dr. King
Characters played by Arthur Space
Dr. Land
Characters played by Don Matheson
Proto
Characters played by Chris Robinson
Corpsman Mallory
Characters played by Walter Burke
Leprechaun Mickey Moore O'Shaughnessy
Leprechaun Patrick Moore O'Shaughnessy
Characters played by Lawrence Montaigne
Dr. Braddock
Characters played by Perry Lopez
Keeler
Characters played by Paul Mantee
Jim Bentley
Characters played by Yvonne Craig
Carol
Characters played by Linda Cristal
Melina Gounaris
Characters played by John Hoyt
General Beeker
Characters played by Edgar Bergen
Kenner
Characters played by Alejandro Rey
Ricardo
Characters played by Edward Binns
Walter Bryce
Characters played by John Milford
Wesley
Characters played by Adam Williams
Chief
Characters played by Danielle De Metz
Anna Ravec
Characters played by Sara Shane
Countess
Characters played by Milton Selzer
Dr. Melton
Characters played by Anna-Lisa
Sigrid
Characters played by Eddie Ryder
Harker
Characters played by Monique LeMaire
Luana
Characters played by George Takei
Cheng
Characters played by Audrey Dalton
Lydia Parrish
Characters played by Brooke Bundy
Gundi
Characters played by Whit Bissell
Connors
Characters played by Joe De Santis
Miklos
Characters played by Vincent Gardenia
Bellini
Characters played by Liam Sullivan
Dr. Anthony Sterling
Characters played by Regis Toomey
George Penfield
Characters played by Arthur Franz
Archer
Characters played by Hedley Mattingly
Lester
Characters played by Curt Conway
Dr. Winslow
Characters played by Harry Millard
The Man
Characters played by Patrick Wayne
Fraser
Characters played by John Dehner
Borgman
Characters played by Gerald Mohr
Athos Vadim
Characters played by Arthur O'Connell
Paul
Characters played by Marian McCargo
Karyl
Characters played by Robert H. Harris
Carleton
Characters played by Jill Ireland
Julie
Characters played by Les Tremayne
Denning
Characters played by Malcolm Atterbury
Commander Jamison
Characters played by Theodore Marcuse
Dr. Gamma
Characters played by Sheila Allen
Mrs. Melton
Characters played by John Alderson
Round-Face
Characters played by Than Wyenn
Anton Koslow
Characters played by Barbara Bouchet
Tippy Penfield
Characters played by Irene Tsu
Su Yin
Characters played by Alvy Moore
Hoff
Characters played by Ted de Corsia
Foreign General
Characters played by Robert Sampson
Capt. Williams
Characters played by Rudy Solari
Tomas
Characters played by Delphi Lawrence
Julietta
Characters played by George Mitchell
Angus
Characters played by Teru Shimada
Nakamura
Characters played by Jay Lanin
Captain of Jefferson
Characters played by Russell Horton
Fred
Characters played by Émile Genest
French Captain
Characters played by Zale Parry
Angela Madison
Characters played by Frank Marth
McHenry
Characters played by Elizabeth Perry
Tracy
Characters played by Dusty Cadis
Rayburn
Characters played by Edward Platt
Morgan
Characters played by Jacques Aubuchon
Abdul Azziz
Characters played by Wright King
Dr. Baines
Characters played by Al Ruscio
Dimitri Gounaris
Characters played by Steven Geray
Oskar Dalgren
Characters played by Michel Petit
Prince Ang
Characters played by Edward Colmans
Fuentes
Characters played by Bob Payne
Murdock
Characters played by Tom Skerritt
Richardson
Characters played by Charles Dierkop
Left-Handed Man
Characters played by John McLiam
Andrews
Characters played by Robert F. Simon
President
Characters played by Lew Brown
Lt. Comdr. Jackson
Characters played by Alexander D'Arcy
Lago
Characters played by Paul Genge
General Ashton
Characters played by Dale Ishimoto
Premier
Characters played by Herbert Lytton
First Admiral
Characters played by Eric Feldary
Deiner
Characters played by Barry Coe
Balter
Characters played by Allen Jaffe
Sebastian
Characters played by Douglas Bank
Witt
Characters played by Diane Webber
Mermaid
Characters played by William Beckley
Major John Andre
Characters played by Henry Darrow
Captain Serra
Characters played by George Lindsey
Collins
Characters played by David Lewis
Dr. Kranz
Characters played by Frank Ferguson
Air Force General
Characters played by Joseph Ruskin
Inspector Falazir
Characters played by Peter Brocco
Xanthos
Characters played by Oscar Beregi Jr.
Colonel Lascoe
Characters played by Walter Brooke
Dan Case
Characters played by Jan Arvan
Georges
Characters played by Frank Richards
Hassler
Characters played by James Brolin
Spencer
Characters played by Walter Sande
Second Admiral
Characters played by Jason Wingreen
Mikhil
Characters played by Judy Lang
Angie
Characters played by Howard Wendell
Dr. Andrew Benton
Characters played by George Tyne
Liscomb
Characters played by Dayton Lummis
Reinhardt
Characters played by Nancy Hsueh
Tish Sweetly
Characters played by Steve Harris
Fowler
Characters played by Harold Dyrenforth
Doctor
Characters played by Michael McDonald
Foster
Characters played by June Vincent
Ava
Characters played by Cec Linder
Van Druten
Characters played by John Newton
Commander Richard Lawrence
Characters played by Robert Swimmer
Pirate
Characters played by Jon Lormer
Dr. Pierre Blanchard
Characters played by Don Knight
Sven Larsen
Characters played by Howard Culver
Reporter
Characters played by Jim Gosa
Centaur II
Characters played by Ralph Garrett
Somers
Characters played by Nancy Kovack
Monique
Characters played by William Boyett
Air Force Lt.
Characters played by John Banner
Russian Chairman
Characters played by Richard Webb
Parker
Characters played by Ed Prentiss
Phillip James
Characters played by Peter Mamakos
Nicolas
Characters played by Stan Jones
Dr. Anderson
Characters played by Bobby Beakman
Jimmy Bryce
Characters played by Ben Wright
Brewster
Characters played by James Anderson
Wilson
Characters played by Richard Loo
Li Tung
Characters played by Lloyd Kino
Policeman
Characters played by Joe Higgins
Magistrate
Characters played by Rachel Romen
Alicia
Characters played by Francis X. Bushman
Old Man
Characters played by Larry D. Mann
Diver
Characters played by Dallas Mitchell
Sonar Man - Destroyer
Characters played by Bill Baldwin
Bill - Aide
Characters played by Damian O'Flynn
Dr. Thompson
Characters played by Bradd Arnold
Page
Characters played by Steve Ihnat
Pennell
Characters played by Kenneth MacDonald
Surgeon
Characters played by Berry Kroeger
Chairman
Characters played by Robert Patten
Naval Doctor
Characters played by William Sargent
Anders
Characters played by Torben Meyer
Proprietor
Characters played by Michael Pataki
Officer
Characters played by John Gallaudet
Admiral Johnson
Characters played by Tudor Owen
Crofter
Characters played by Ed McCready
Hill
Characters played by John Goddard
Tracy
Characters played by Richard Gilden
Tal
Characters played by Freddie Roberto
Croupier
Characters played by Phil Posner
Stevens
Characters played by Gus Trikonis
Sonar Man - Sub.
Characters played by Janos Prohaska
Gorilla
Characters played by Eric Matthews
Maj. Bob Wilson
Characters played by George Robotham
Frost Man #2
Characters played by Martin Kosleck
Director
Characters played by Biff Elliot
Lineman
Characters played by Douglas Lambert
Williams
Characters played by Greger Vigen
The Boy
Characters played by Bert Remsen
Senator Kimberly
Characters played by Kent Taylor
Johnson
Characters played by Lee Millar
Soldier
Characters played by Michael Barrier
Cabrillo
Characters played by Walter Woolf King
Hansen
Characters played by Margot Stevenson
Betty
Characters played by Harry Lauter
Cmdr. Finch
Characters played by Erik Holland
Gartern
Characters played by Peter Adams
Johnson
Characters played by Danica D'Hondt
Lola Hale
Characters played by Jon Kowal
Policeman
Characters played by George Zaima
Scientist
Characters played by Herb Voland
Carter
Characters played by Joseph Walsh
Atlas
Characters played by Frank Delfino
Boy - Midget
Characters played by Lee Kolima
Junk Captain
Characters played by Ed Connelly
Rourke
Characters played by Weaver Levy
Oriental Colonel
Characters played by George Young
Lang's Accomplice
Characters played by Armand Alzamora
Spanish Major
Characters played by Kort Falkenberg
The Father
Characters played by Mike Kellin
Steban
Characters played by Gordon Gilbert
O'Brien
Characters played by John Strong
Radioman Monroe
Characters played by Ron Stein
Crew Member
Crewman
Ron
Airman
Forrester
Missile Room Crewman
Ray
Sonar
Thompson
Characters played by Philip Barry
Crew Member
Crewman
Crewmember
Crew Member Phil
Crew Member Simmons
Characters played by Marco Lopez
Crewman
Crew member with fire extinguisher
Crewman Mark
Crewman Ron
Radar
Seaview Crtewman
Characters played by Darryl Scott McFadden
Alien
Amphibian
Helmsman
Robot
Royal Lawyer
The Monster
The Mummy
Characters played by Paul Zastupnevich
Aleksei
Giorgio
Survivor
Technician
Villager
Characters played by Tyler McVey
Gen. Blake
Pentagon Officer
Washington Official
Characters played by Irwin Allen
Crewman
Newscaster
Characters played by Charles Horvath
Assassin Henchman
Hijacker
Zombie
Characters played by Ted Jordan
Astronaut #2
Burns
Crewman
Characters played by Jim Mills
Alien Leader's Voice
Flame Voice
Shadowman Voice
Characters played by Bart La Rue
Captain Jacob Wren
Paulsen
Pirate
Characters played by Dick Tufeld
Brain
Narrator
Characters played by Kenner G. Kemp
General
Officer
Characters played by Hal Torey
Air Force General
Naval Commander
Characters played by Jim Goodwin
Helmsman
Characters played by Bob Pane
Helmsman
Characters played by Ray Didsbury
Collins
Unspecified Role
Characters played by Pat Priest
Karen Joyce Pennell
Characters played by Dan Seymour
General
Characters played by Christopher Connelly
Sparks
Characters played by Buck Kartalian
Crew Member
Characters played by James Seay
Mr. Secretary
Characters played by John Fujioka
Enemy Agent in Room
Characters played by Arthur Peterson
Official
Characters played by Walter Reed
Scientist
Characters played by Chuck Courtney
Crew Member
Characters played by Larry Kerr
Joe Oberhansly
Characters played by Tom Palmer
Dr. Taylor
Characters played by Ronnie Rondell Jr.
Driver
Characters played by Joe Di Reda
Spaceman
Characters played by Maurice Manson
Russian
Characters played by Fred Stromsoe
Fox
Characters played by Dennis Cross
Operator on Starfish
Characters played by Paul Stader
Villager
Characters played by Frank Biro
Army General
Characters played by Tony Monaco
Seaview Cook
Characters played by Peter Bourne
Maris
Characters played by John Lamb
Native
Characters played by William Kinney
Crew Member
Characters played by Athan Karras
Hotel Clerk
Characters played by Fred Zendar
Crew Member
Characters played by Oren Curtis
Asian
Characters played by Chuy Franco
Villager
Characters played by Kenneth Brischof
Villager
Characters played by Clyde Cameron
Rolvaag
Characters played by Mike Ferris
Asian
Characters played by Alf George
Villager
Characters played by Nicholas Colasanto
Reporter
Characters played by George Sawaya
Foreign Agent
Characters played by William Stevens
Radarman
Characters played by Hans Moebus
Casino Patron
Characters played by George Holmes
Casino Patron
Characters played by Fred Crane
Cyborg Voices
Characters played by Benjie Bancroft
General
Characters played by Murray Pollack
Casino Patron
Characters played by James Gonzalez
Casino Patron
Characters played by Lee Delano
Space Center Technician
Characters played by Tom Curtis
First Technician
Characters played by Dick Dial
Soldier #2
Characters played by Preston Hanson
Flight Director
Characters played by Sandra Williams
Stewardess
Characters played by Robert Chadwick
Astronaut #1
Characters played by Bob Legionaire
Commander
Arctic Radar Station
Characters played by Ken Tilles
First Gondolier
Characters played by Stanley Schneider
Sailor
Characters played by Thomas Nello
Antonio
Characters played by Paul Kremin
Waiter
Characters played by Anthony Brand
Technician
Characters played by Michael Fox
Gen. Haines
Characters played by Ross Elliott
Chairman's Assistant
Characters played by Sue England
Woman's Voice
Characters played by Bill Hickman
Missile Room Man
Characters played by Gene LeBell
Vulcan Crew Member
Characters played by Robert Brubaker
Admiral Howard
Characters played by Sean Morgan
Gantt's Sonar Man
Characters played by Stan Kamber
Sailor
Characters played by Robert Riordan
Vendon
Characters played by George Sims
Bailey
Characters played by Gregory Morton
Nelson's Controller
Characters played by Bob McFadden
Invader
Characters played by Jackie Basehart
Crewman Jackson
Characters played by Chuck Couch
Adam
Characters played by William Kelley
Sparks
Characters played by Allen Wurtzel
Blair
Characters played by Thom Brann
Crewman
Characters played by Nick Dimitri
Alien #2
Characters played by Troy Melton
Alien
Characters played by Ron Gans
Abominable Snowman
Characters played by Denver Mattson
Alien
Characters played by John Bellah
Crewman