Dr. Blinky / Ludicrous Lion / Seymore Spider / Various (voice)
2nd Electrician
Announcer
Fred Zinnemann
Citizen (voice)
Trucker
(voice)
Rev. Newton
Lt. Moore (uncredited)
Deputy Cal Hartner
TV Interviewer
Harry S. Truman
Warner
Sheriff Hart
Nelson Rockefeller (voice)
Dr. Stagg
Laura's Father
Inferno (voice)
John Muir (voice)
Radio Announcer (voice)
Police Chief Dennis Warren
Mark
Bus Driver / Jail Orator / Small Fag / Prospector / Mexican Official / President / Man in Elevator (voice)
Squiddly Diddly / Yakky Doodle (voice)
Larry Brice
Zuni Fetish Doll (voice) (uncredited)
Pa
Mr. Slugworth (uncredited)
Talking Baby Chimp (uncredited) (voice)
God (voice)
Dr. Claymor
Witch's Encyclopedia / Old Salt / Mayor (voice)
Cop / Neighbor / Prosecutor (voice) (uncredited)
Mercury Theatre Player
Narrator
Big Daddy Ooze
Bob Frank / Whizzer (voice)
Balok (voice) (uncredited)
Admiral Scuttlebutt
Dr. Lakin
Additional Voices (voice)
Burnett (uncredited)
Boris Karloff Tree
Marty (voice)
Henry Folsom
Ludlow
Station Master
Hutton
Tex
Russian Operator
Transporter Chief (voice) (uncredited)
Warning call from the S.S. Deidre (voice)
Provider #2
Space Central (voice)(uncredited)
Sir Thornberry (voice)
Ivan
Dr. Hatfield
Azulon (voice)
Mr. Blume
Teller
Judge Hollander
Koldar
Gardener
Auctioneer
J. Montague Gypsum (voice)
Sheriff Paterson