O Monstro

Lon Chaney

Dr. Ziska

Johnny Arthur

Johnny Goodlittle

Gertrude Olmstead

Betty Watson

Hallam Cooley

Amos Rugg

Charles Sellon

Russ Mason

Walter James

Caliban

Knute Erickson

Daffy Dan

Frank Austin

Rigo

Edward McWade

Luke Watson

Ethel Wales

Mrs. Watson

Elmo Billings

Freckle Faced Kid (uncredited)

Herbert Prior

Dr. Edwards (uncredited)

William H. Turner

Detective Jennings (uncredited)

Dorothy Vernon

Townswoman at Accident Scene (uncredited)