• 
  Leslie H. Martinson

  regizor

• 
  Mickey Rooney

  Barnaby 'Blix' Waterberry
• 
  Stan Adams

  Wildcat Hooper
• 
  Dick Winslow

  2nd Sergeant
• 
  Peter Leeds

  Agent Bill
• 
  Paul Dubov

  Anderson, advertising agent
• 
  Don Haggerty

  Lieutenant
• 
  Whit Bissell

  Dr. Edgar Pangborn

• 
  Hal March

  Agent Ray
• 
  Milton Frome

  Communications Man
• 
  Bill Goodwin

  Dr. Rodell
• 
  Peter Brocco

  Comrade Mosley
• 
  Dan Riss

  Jim, FBI Chief Agent
• 
  Robert Nichols

  Bob, technician in Blix's room
• 
  Stanley Adams

  Wildcat Hooper

• 
  Fay Roope

  Gen. Lawlor
• 
  Robert Strauss

  Stan Cooper
• 
  Elaine Devry

  Audrey Nelson

• 
  Frank Hotaling (I)

  art director
• 
  John L. Russell

  imagine
• 
  Adele Palmer

  costume
• 
  Mickey Rooney

  producător
• 
  George Milo

  set decorator
• 
  John McCarthy Jr.

  set decorator
• 
  Robert L. Hoyt

  sound department
• 
  Howard Lydecker

  special effects
• 
  Blake Edwards

  scriitor
• 
  Edward Edwards

  scriitor