Ken Berry
Frank
Acting
Sandy Duncan
Liz
Acting
Harry Morgan
General Stilton
Acting
Roddy McDowall
Mr. Stallwood
Acting
McLean Stevenson
Link
Acting
Jesse White
Earnest Ernie
Acting
Alan Young
Dr. Wenger
Acting
Hans Conried
Dr. Heffel
Acting
Ronnie Schell
Jake (Voice) / Sgt. Duffy
Acting
James Hampton
Capt. Anderson
Acting
Howard Platt
Col. Woodruff
Acting
William Prince
Mr. Olympus
Acting
Ralph Manza
Weasel
Acting
Tom Pedi
Honest Harry
Acting
Hank Jones
Officer
Acting
Rick Hurst
Dydee Guard
Acting
John Alderson
Mr. Smith
Acting
Tiger Joe Marsh
Omar
Acting
Arnold Soboloff
NASA Executive
Acting
Mel Carter
1st Soldier
Acting
Dal McKennon
Farmer
Acting
Alice Backes
Farmer's Wife
Acting
Henry Slate
Sandwich Man
Acting
Roger Pancake
Red
Art
Roger Price
1st E.R.L. Expert
Acting
Jerry Fujikawa
2nd E.R.L. Expert
Acting
Jim Begg
Dydee Driver
Acting
Peter Renaday
Bailiff
Acting
Rickie Sorensen
Technician
Acting
Tom Jackman
Army Engineer
Acting
Fred L. Whalen
Sarasota Slim
Acting
Joseph G. Medalis
Sucker
Acting
Gil Stratton
1st NASA Scientist
Acting
Jana Milo
2nd NASA Scientist
Acting
Sorrell Booke
Presiding Judge (uncredited)
Acting
Jackson Bostwick
Additional Voices (voice) (uncredited)
Acting