출연진
Donald Murphy
Oliver Frank(enstein)
Sandra Knight
Trudy Morton
John Ashley
Johnny Bruder
Felix Locher
Prof. Carter Morton
Wolfe Barzell
Elsu
Harry Wilson
The Monster
Sally Todd
Suzie Lawler
Harold Lloyd Jr.
Don
John Zaremba
Police Lt. Boyle
Robert Dix
Police Det. Bill Dillon
Charlotte Portney
Hysterical Woman
Voltaire Perkins
Mr. Rockwell
Bill Coontz
Loading Dock Foreman
George Barrows
Loading Dock Worker Mack