Carl Switzer

Alfalfa

Benny Bartlett

Orvie

Rudy Wissler

Scat

Tommy Bond

Chimp

Milton Parsons

Prof. Gately Crawford

James Burke

Police Lt. Burke

Jan Bryant

Hazel Crawford

Michael Whalen

Lance Carter

Douglas Fowley

Mitch Gordon

Frank Orth

Police Captain

Gene Roth

Policeman (uncreditited)

Edward L. Cahn