On screen
Cast
210 credited performers
Don Marshall
Dan Erickson
Heather Young
Betty Hamilton
Don Matheson
Mark Wilson
Stefan Arngrim
Barry Lockridge
Gary Conway
Steve Burton
Deanna Lund
Valerie Scott
Kurt Kasznar
Alexander B. Fitzhugh
Kevin Hagen
Insp. Dobbs Kobick
Erik L. Nelson
SID Officer
Steven Marlo
Cop
Michael Quinn
Lt. Emar
Leonard Stone
Sgt. Eson
Paul Fix
Dr. Brulle
Warren Stevens
Olds
Cliff Osmond
Grotius
Ivan Markota
Giant Fugitive
Sheila Allen
Nurse Helg
Paul Trinka
Giant Guard
Jack Albertson
Prof. Kirmus
Ted Jordan
SID Man
Sandra Giles
Dr. Greta Gault
Stewart Bradley
Police Sergeant
William Bramley
First Giant
Joseph Ruskin
Carlos
Janos Prohaska
Gorilla
Willard Sage
Inspector Swan
Miriam Schiller
Nurse
Patrick Culliton
Policeman
Martin Liverman
Security Guard
Mike Mazurki
Loach
Don Collier
Mr. Bara
Alex Dreier
Kronig
George Mitchell
Harry Cass
Jay Novello
Okun
Doodles Weaver
Giant Hobo
Billy Halop
Bartender Harry
Wesley Lau
Policeman
Elizabeth Rogers
Secretary
Whit Bissell
Dr. Krane
Joan Freeman
Mara
Kimberly Beck
Giant Girl
Celeste Yarnall
Marna Whelan
Michael Ansara
Murtrah
Myron Healey
Second Giant
Vic Tayback
Hood
Michael Anderson Jr.
Ben Car
Tol Avery
Mr. Derg
Albert Salmi
Character not listed
Lance LeGault
Giant Policeman
Fritz Feld
Quigg
Arthur Franz
Dr. Franzen
Broderick Crawford
Prof. Gorn
Charles Drake
Mr. Erdap
William Benedict
Villager Peabody
Jonathan Harris
Mr. Piper
Percy Helton
Akman
Zalman King
Nick
Vic Perrin
Giant Small Man Shoved by FitzHugh
Charles Dierkop
Arthur Kamber
Gene Dynarski
Warden Barmak
Howard Culver
Curator
Peter Haskell
Enog
Guy Stockwell
Garak
Peter Mark Richman
Dr. Marad
Yvonne Craig
Berna
Torin Thatcher
Dr. Berger
William Schallert
Dr. Arno
Clint Ritchie
Andros
Kent Taylor
Doc Jelko
Glenn Corbett
Major Kagan
Sugar Ray Robinson
Biff Bowers
Sam Elliott
Martin Reed
John Zaremba
Dr. Lalor
Alfred Ryder
Parteg
Peter Leeds
Senator
Peter Jason
Mylo
Arthur Batanides
Luigi
Paul Carr
Giant Photographer
Norman Burton
Sergeant
John Abbott
Prof. Gorak
Larry Ward
Talf Ekorb
Ben Blue
Moley
Len Lesser
Prisoner
Robert H. Harris
Uncle Tojar
Bob Braun
Balloon Vendor
John Marley
Deputy Zarkin
Madlyn Rhue
Bertha Fry
Lane Bradford
Lobo
Harry Lauter
Policeman
Jerry Douglas
Fielder
Mort Mills
Constable
John Crawford
Character not listed
Diane McBain
Mrs. Evers
John Pickard
Giant Guard
Raymond Guth
Tramp
Stuart Margolin
Zoral
John Carradine
Egor Crull
Ed Peck
Mike Warkin
Nehemiah Persoff
Titus
John Milford
Ranger Wilson
Don Kennedy
Policeman
Dennis Cross
Giant Policeman
Christopher Dark
Sergeant Barker
Garry Walberg
SID Man
Joe Turkel
Sergeant
Bruce Dern
Thorg
Robert F. Lyons
Nalor
Anne Seymour
Martha Cass
Henry Corden
Janitor
Gary Dubin
Dal Ekorb
Gene LeBell
Mezron's Brother
Malachi Throne
Taru
Robert Colbert
Security Chief O. Bolgar
John Dehner
Lieutenant Grayson
Olan Soule
Cameraman
John Harmon
Groom
Tom Drake
SID Sergeant
Parley Baer
Senator Obek
Bill Quinn
Warden Sloan
Jan Shepard
Osla Ekorb
Lee Meriwether
Mrs. Bara
Jesse White
Max Manfred
Don 'Red' Barry
Dr. Zoral
Tom Reese
Sgt. Gedo
Richard Anderson
Joe Simmons
Francine York
Dr. North
Timothy Scott
Trilling
Larry Pennell
Guard
Anne Dore
Giant Female
Don Watters
Giant Entomologist
Amber Flower
Granddaughter
Baynes Barron
Giant Policeman
Jerry Catron
Giant Sentry
Jim Gosa
Giant Guard
Jean-Michel Michenaud
Pepi
Arch Whiting
Policeman
Linden Chiles
Joe / Logar
John Napier
Convict
Morgan Jones
Assistant Scientist
Grant Sullivan
Policeman
Gary Tigerman
Delivery Boy
Joe Ryan
Policeman
Don Gazzaniga
Giant Watchman
Page Slattery
Scientist
Tom Webb
Dolf
Jack Chaplain
Joey
Lee J. Lambert
Hopper
Dave Dunlop
Giant Trapper
Robert Dowdell
Policeman
Paul Sorensen
Giant Camper
Bill Fletcher
Sgt. Karf
Robert Emhardt
Mr. Secretary
Teddy Quinn
Garna
Michael Freeman
Tobek
Chris Alcaide
Sgt. Arnak
Rico Cattani
SID Man
Dee Hartford
Altha Franzen
Peter Mamakos
Logar
Denver Mattson
Sergeant
Jacques Aubuchon
Zurpin
Ron Howard
Jodar
Rusty Jones
Boy Witness
Tony Benson
Grot
Jerry Davis
Torg
Buddy Foster
Tedar
Blair Ashley
Leeda
Roy Rowan
Newscaster
Keith Taylor
Newsboy
Patrick Sullivan Burke
Golan
William Chapman
Secretary Mek
James Daris
Super Giant Robot
Richard Carlyle
Special Policeman
Arch Johnson
Chief Rivers
Charlie Briggs
Guard
Diana Chesney
Nell
George Sperdakos
Goldsmith
Oliver McGowan
Dr. Howard
Tom Nardini
Carl
Robert Shayne
Mr. Clinton
Christopher Cary
Deenar
Robert Tiedemann
The Monk
James Jeter
Gateman
Rex Holman
Mezron
Jerry Quarry
Bron
Scott Thomas
Messenger
John Mooney
Pharmacist
Robert Cornthwaite
Machine (voice)
Peter Canon
Slave
William Bassett
Ranger Jack
June Dayton
Mrs. Perkins
Robert Adler
Villager Sloacum
Pete Kellett
Guard
Alan Hale Jr.
O'Reilly
Alan Bergmann
Krenko
Eddie Marr
Peddler Brynie
C. Lindsay Workman
Cunningham - Jeweler
Dusty Cadis
Store Guard Warner Jr.
Yale Summers
Andre
Michael-James Wixted
Timmy
Edward G. Robinson Jr.
SID Guard Rogers
Sean Kelly
Alek
Frank Ferguson
Goalby
Victoria Vetri
Lisa
Robert Hogan
Brady
Diane Krabbe
Diane
Carl Carlsson
Knife Thrower
Al Lampkin
Fire Eater
Louise Lorimer
Miss Smith
Susan Howard
Mrs. Garak
Pat Michenaud
Giant Boy