On screen
Cast
338 credited performers
Ivan Dixon
Major Harold Giles
Robert Duvall
Adam Ballard
Willard Sage
First Reporter
Robert Culp
Trent
John Hoyt
Emmett Balfour
Jason Wingreen
Fred Severn
Douglas Henderson
Detective Lt. Runyan
Edward Platt
Mr. Terrence
Ted de Corsia
New Sentry
Ben Wright
Gen. Benton
Robert Fortier
Budge
Dabney Coleman
Dr. Williams
Philip Abbott
Lincoln Russell
David Frankham
Harvey Kry Jr.
Henry Silva
Chino Rivera
Kent Smith
Dr. Block
William Stevens
Navigator Dexter
Janos Prohaska
Thetan (uncredited)
Martin Landau
Andro
Geraldine Brooks
Ann Barton
Joan Camden
Prof. Stephanie Linden
Aki Aleong
Dr. Sui-Lin
Don Gordon
Dave Crowell
William Douglas
Henry Castle
Sally Kellerman
Ingrid Larkin
David McCallum
Tone Hobart
Allyson Ames
Arndis Pollard
Scott Marlowe
André
Neil Hamilton
Hilary J. Clarke
Henry Scott
Electronics
Nellie Burt
Justice's Wife
Walter Burke
Recruiter
Peter Mark Richman
Prof. Ian Fraser
James Shigeta
AIO Captain Newa
Jacqueline Scott
Carol Maxwell
Sam Reese
Clyde Wyatt
Robert Doyle
Marc Lake
George Macready
Larry K. Hillerman
Shirley O'Hara
Dr. Soldini
Peter Madsen
Carter - Watchman
Tim O'Connor
Major Clint Anderson
Konstantin Shayne
Philip Fletcher
Linda Hutchings
Arlene Schnabel
Vaughn Taylor
Randall Latimer
Dabbs Greer
E. F. Larkin
Rudy Solari
Captain Buckley
Gail Kobe
Janet Doweling
Crahan Denton
Sheriff Simon Stakefield
Leonard Nimoy
Konig
Curt Conway
Dr. Philip Mendl
Bob Johnson
Project Adonis Intercom Announcer (voice) (uncredited)
Paul Lukather
Official
James B. Sikking
Orderly
Donald Harron
Art Harris
Steve Ihnat
Lt. Minns
Dee Pollock
Francis Hadley, P.F.C.
James Frawley
Robert Renaldo
Kim Hector
Johnny Subiron
Morgan Brittany
Minerva Gordon
Lee Philips
Radio DJ Gene 'Buddy' Maxwell
Jill Haworth
Cathy Evans
Alan Baxter
Colonel Grover
Henry Darrow
Policeman
Miriam Hopkins
Mary Kry
Olive Deering
Lisa Lawrence
Carroll O'Connor
Deimos
BarBara Luna
Gaby Christian
Diana Sands
Dr. Julia Harrison
Nick Adams
Mike Benson
Salome Jens
Laurie Cameron
Patrick O'Neal
Jonathan Meridith
Eddie Albert
Andy Thorne
Dewey Martin
Jim Darcy
Burt Metcalfe
Eddie Phillips
Bert Remsen
Frank Summers
Billy Green Bush
Tom - Duckhunter #3 (as William Bush)
Donald Pleasence
Harold J. Finley
Edward Mulhare
Professor Mathers
Jeff Corey
Byron Lomax
Ron Randell
Henderson James
Shirley Knight
Noelle Anderson
Alfred Ryder
Edgar Price
Ron Hayes
Pilot Coberly
Ed Asner
Detective Sgt. Thomas Siroleo
Michael Tolan
Prof. Stephen Grave
Grace Lee Whitney
Carla Duveen
Larry Pennell
Dr. Evan Marshall
Geoffrey Horne
Wade Norton
Nancy Malone
Laura Hanley
John Anderson
Ebonite Interrogator
Howard Da Silva
Thurman Cutler (as Howard da Silva)
William Shatner
Gen. Jeff Barton
June Havoc
Karen Thorne
Mary Murphy
Linda Darcy
Leslie Stevens
Election Returns Commentator (voice) (uncredited)
Leonard Stone
Dr. Phillip Gainer
John Marley
Dr. Sigmund Hindeman
Gary Merrill
Dr. James Hamilton / Major Roger Brothers
Francis De Sales
Prison Warden (as Francis de Sales)
Ralph Meeker
John Dexter
Russell Collins
Justice of the Peace
Ruth Roman
Prof. Diana Brice
Lloyd Nolan
Tom Kagan
Sam Wanamaker
Dr. Simon Holm
Michael Forest
Prof. Stuart Peters
Bruce Dern
Ben Garth
Barry Morse
Phobos One
Vera Miles
Kassia Paine
Martin Sheen
Pvt. Arthur Dix
Peter Lind Hayes
Dr. James Stone
Michael Constantine
Joe Dix
Kay E. Kuter
Limbo Being
Peggy Ann Garner
Amanda Frank
Mark Roberts
Bob Conner
Paul Lambert
Dr. Henschell
Nora Marlowe
Mrs. Ives
Peter Breck
Senator Orville
Harry Guardino
Major Roger Brothers / Dr. James Hamilton
Jerry Douglas
Tom Evans
Melinda Casey
Vivia Balfour Hayden
Robert Webber
Ikar
Phyllis Love
Andrea Holm
Gladys Cooper
Mrs. Palmer
Michael Higgins
Dr. Thomas Kellander
Ed Nelson
Col. Luke Stone
William Boyett
Co-Pilot Beeman
Cliff Robertson
Alan Maxwell
Phillip Pine
Ted Pearson
Frank Maxwell
Dr. Keenan
Harry Townes
Clifford Scott
Martín Garralaga
Paco
Buck Taylor
Gard Hayden
Nina Foch
Eva Fraser
Cedric Hardwicke
Colas (as Sir Cedric Hardwicke)
Adam West
Major Merritt
Ford Rainey
D.A. Thomas Coyle
Arthur Hunnicutt
Lamont
Sidney Blackmer
William Lyons Selby
Priscilla Morrill
Vera Finley
Joe De Santis
Colonel William Campbell
Janet Blair
Lynn Arthur
Barry Jones
Dwight Hartley
Bernard Kates
Dr. Whorf
Skip Homeier
Dr. Roy Clinton
Grant Williams
Major Douglas McKinnon
Richard Loo
Li-Chin Sung
James McCallion
Dr. Tremaine
Jay Novello
Prof. Arivello
Gene Raymond
Sawyer
Whit Bissell
Commanding General
James Hong
Wen Li
Richard Tretter
Radio Engineer
James Yagi
Li Kwan
Joseph V. Perry
Police Chief (as Joseph Perry)
Don C. Harvey
Military Commander (as Don Harvey)
Mavis Neal Palmer
Woman (as Mavis Neal)
Clarence Lung
Maj. Ho Chi-Wong
Nancy Rennick
Carol Selby Conner
Emma Tyson
Jane Darcy
William Bramley
"Baldy" Baldwin
Dorothy Green
Matron
Coby Denton
Sentry
Paul Kent
Detective
Anne Loos
Emily Radcliffe
Harry Ellerbe
Finley's Doctor
Fred Beir
Steve Crandon
Constance Cavendish
Gert 'the Bread' Evans
George Pelling
Policeman
Martin Wolfson
Dr. Herschel
Clay Tanner
Fred - Duckhunter #1
Hal Bokar
Bert - Duckhunter #2
Lee Zimmer
Carl Ford - TV Announcer
John Considine
Lt, Bertram Cabot
Maxine Stuart
Mrs. McCluskey
Karl Held
Capt. Joseph Reardon
Jack Raine
Old Man (scenes deleted)
Joanne Gilbert
Barbara Scott
C. Lindsay Workman
Dr. Anderson
Robert Benevides
James Harrison
John Newton
Peterson
Jane Langley
Nurse
Matty Jordan
Sentry
Art Alisi
Sergeant
Barry Atwater
Dr. Jonas Temple
Ken Renard
Caretaker
David Garner
Ralph
Bill Gunn
Lt. James P. Willowmore
Sasha Harden
Lt. Esra Krug
Lillian Adams
Dix's Mother
Lisa Mann
Krug's Governess
Gene Darfler
Warren Edgar Morley
Tom Palmer
Coroner
Noel De Souza
Capt. Fortunado
Edward Colmans
Servant
Jon Silo
Oswaldo
Stuart Lancaster
Skipper
Robert F. Simon
Gen. Maximillian R. Hart
Claude Woolman
Maj. Roger Hill
Ron Foster
Dr. Robert Richardson (as Ronald Foster)
Hugh Langtry
Chromoite
Gene Tyburn
Goldsmith
Don Ross
Haddon
Bob Kelljan
Frank Brant
Anthony Jochim
Dr. Mordecai Spazman
Dee Hartford
Mrs. Clarke
Marsha Hunt
Francesca Fields
Joanna Frank
Regina
Booth Colman
Doctor Howard Warren
Tony Mordente
Genero Planetta
Chris Warfield
Johnny
Richard Dawson
Oliver Fair
Len Lesser
Sforza Water/Power worker
John Graham
Supervisor
Chita Rivera
Mrs. Dame
Lee Kinsolving
Ethan Wechsler
John Milford
John Bartlett
Bennye Gatteys
Anna Bishop
Stephen McNally
Col. MacWilliams
Richard Jaeckel
Capt. Mike Doweling
Burt Douglas
Man
Simon Oakland
Empyrian
Robert Osterloh
General
John Kellogg
Major Nathan Jennings
Janet De Gore
Mara Matthews
Joe E. Tata
Deputy (as Joey Tata)
Peter Baldwin
Lt. Gordon Halper
Russell Johnson
Major Benedict
Yale Summers
Buddy Lyman
Arthur Batanides
Lt. Ken Galvin
Arnold Merritt
Tommy Shadbury
Mimsy Farmer
Denise Ward
John McLiam
Arjay Beasley
Alex Nicol
Gen. Lee Stocker
Warren Oates
Reese Fowler
Angela Clarke
Sueann Beasley
Robert Sampson
Lt. Peter Chandler
Hari Rhodes
Lt. Ernie Travers
Herman Rudin
Prof. Henry Lacosta
Richard Derr
Phillip Griffith
Luana Anders
Theresa Ames
Macdonald Carey
Roy Benjamin
Betsy Jones-Moreland
Julie Griffith
Gloria Grahame
Florida Patton
Richard Ney
Mr. Zeno
Bill Hart
Calco Galaxy Alien
Flip Mark
Kenny Benjamin
Ray Kellogg
Detective
Marion Ross
Agnes Benjamin
Joyce Van Patten
Rhea Cashman
David Opatoshu
Ralph Cashman
Frank Puglia
Father Fontana
Bert Freed
Joe Hayden
Glenn Cannon
Teenage Luminos
Joseph Ruskin
Collins
Signe Hasso
Laural Marshall
Barry Russo
Dr. Terrell
Howard Caine
Leon Chambers
William O'Connell
The Creature
Michael Ansara
Qarlo Clobregnny
Henry Brandon
General Crawford
Ralph Hart
Loren Kagan
Barbara Rush
Leonora Edmond
Jill Hill
Toni Kagan
Allen Jaffe
The Enemy
Lloyd Gough
Gen. Claiborne
Marlowe Jensen
Sgt. Berry
Malachi Throne
Dr. Mike
Catherine McLeod
Abby Kagan
Dean Harens
Medical Technician
Lawrence Montaigne
Construction
Julian Burton
Reporter #1
Joan Freeman
Elizabeth Dunn
Parley Baer
Dr. Bernard Stone
Marcelle Hebert
Miss Willett (as Marcel Hebert)
Keith Andes
Dr. Peter Wayne
Paul Sorensen
Grayson
James Doohan
Police Lt. Branch
Richard Gittings
TV Newscaster
Jack Wilson
Sergeant Jackson
Mary Gregory
Apartment Manager
Barbara Wilkin
Susan Wayne
Peter Duryea
Morrow
Michael Falcon
Elevator Operator
Arlene Martel
Consuelo Biros
Owen McGiveney
Night Watchman (as Owen McGivney)
Abraham Sofaer
Arch
Troy Melton
Det. Sgt. Alger
Rex Holman
Battle
Joe Maross
General Winston
Steve Harris
Breech
Ted Knight
Mr. Jerome
Chris Alcaide
Colonel Danvers
Anthony Costello
Lieutenant Bowman
Robert DoQui
Lieutenant Johnson
Peter Marko
Captain Lazzari
Michael T. Mikler
Captain Thomas
Sara Shane
Ethel Meridith
Marianna Hill
Nina
Peter Haskell
Peter Jellicoe
Robert Sorrells
Fred
Hugh Sanders
Sheriff Barclay
Mary Jackson
Mrs. McCrae
Peter Brocco
Professor 'Doc' Link
Ken Drake
The Judge
Christine Matchett
Evie
Robert Nelson
The Surgeon
Robert Cinder
Jessup
William Wintersole
Prof. Andrew Whitsett
Simon Prescott
The Guard
Jan Shutan
Mrs. Subiron
Joanne Stewart
Miss Steen
Leon Askin
Shop Superintendent
Paulle Clark
Second Nurse
David Brady
Danny Masters
Warren Stevens
Eric Plummer
Constance Towers
Laura James
Mike Lane
The Megasoid
Steven Geray
Jerichau
Alan Gifford
The Guide
Jeffrey Stone
The Cop
Jonathan Hole
The Pedestrian
Ivy Bethune
Miss Thorsen
Charles H. Radilak
Michael Lint
Sean McClory
Karl Emmet
Larry Ward
Keith Ellis
Elizabeth Perry
Jennifer Barham
Stephen Joyce
Captain Branson
Anthony Eisley
Col. Alex Barham
Douglas Kennedy
Gen. Daniel Pettit
Shary Marshall
Maggie O'Hara
Sandy Kenyon
Henry Craif
Martin Kosleck
Dr. Leo Hausner
Wesley Addy
Dr. Rahm
Peter Hansen
Major Locke
Robert Chadwick
Guard
Read Morgan
Adam Lunk
John Caper Jr.
Adam Link (voice)
Marco López
Security Guard (uncredited)