• 
  Norman Tokar

  regizor

• 
  Roddy McDowall

  Mr. Stallwood
• 
  Harry Morgan

  General Stilton
• 
  Ralph Manza

  Weasel
• 
  Hank Jones

  Ofiţer
• 
  James Hampton

  Capt. Anderson
• 
  Alan Young

  Dr. Wenger
• 
  Peter Renaday

  aprod

• 
  John Alderson

  Mr. Smith
• 
  Ken Berry

  Dr. Franklin 'Frank' Wilson
• 
  Alice Backes

  Farmer's wife
• 
  Hans Conried

  Dr. Heffel
• 
  McLean Stevenson

  Dr. Norman Link
• 
  Angus Young

  Dr. Wenger
• 
  Jesse White

  Earnest Ernie (the Gambling Dealer)

• 
  Rickie Sorensen

  Technician
• 
  Sorrell Booke

  Presiding judge
• 
  Sandy Duncan

  Dr. Elizabeth 'Liz' Bartlett
• 
  William Prince

  Mr. Olympus
• 
  Jim Begg

  Dydee driver
• 
  Howard Platt

  Col. Woodruff
• 
  Tom Pedi

  Honest Harry
• 
  Ronnie Schell

  Jake - voice / Sgt. Duffy

• 
  E. Preston Ames

  art director
• 
  John B. Mansbridge

  art director
• 
  Rexford L. Metz

  camera and electrical departme
• 
  Charles F. Wheeler

  imagine
• 
  Lalo Schifrin

  departament sunet
• 
  Cotton Warburton

  montaj
• 
  James W. Gavin

  miscellaneous crew
• 
  Ross Reynolds

  miscellaneous crew
• 
  Jack Hayes (I)

  music department
• 
  Ron Miller

  producător
• 
  Norman Tokar

  producător
• 
  Norman Rockett

  set decorator
• 
  Art Cruickshank

  special effects
• 
  Eustace Lycett

  special effects
• 
  Daniel Lee

  special effects
• 
  Dick Warlock

  cascador
• 
  Carey Loftin

  cascador
• 
  Bob Harris

  cascador
• 
  Harrison Ellenshaw

  visual effects