Donald Murphy

Character: Oliver Frank(enstein)

Sandra Knight

Character: Trudy Morton

John Ashley

Character: Johnny Bruder

Felix Locher

Character: Prof. Carter Morton

Wolfe Barzell

Character: Elsu

Harry Wilson

Character: The Monster

Sally Todd

Character: Suzie Lawler

Harold Lloyd Jr.

Character: Don

John Zaremba

Character: Police Lt. Boyle

Robert Dix

Character: Police Det. Bill Dillon

Charlotte Portney

Character: Hysterical Woman

Voltaire Perkins

Character: Mr. Rockwell

Bill Coontz

Character: Loading Dock Foreman

George Barrows

Character: Loading Dock Worker Mack