Oliver Frank/Frankenstein

Donald Murphy

Johnny Bruder

John Ashley

Trudy Morton

Sandra Knight

Prof. Carter Morton

Felix Locher

Suzie Lawler

Sally Todd

Don (Suzie's guy)

Harold Lloyd Jr.

Elsu

Wolfe Barzell

The Monster

Harry Wilson

Police Lt. Boyle

John Zaremba

Police Det. Bill Dillon

Robert Dix

Party Band

The Page Cavanaugh Trio

Hysterical Woman

Charlotte Portney

Mr. Rockwell, Chemist

Voltaire Perkins

First Victim - Warehouseman

Bill Coontz

Mack (dockworker)

George Barrows

Oliver Frank

Don Murphy