Charles Halton

as Clemmons Usqubaugh

as Factory Foreman

as Oliver Latham

as Henry Miggs

as Mr. Barker (uncredited)

as Colonel House

as Censorial Pipsqueak

as Doctor (uncredited)

as Harry Hammond

as A.V. Smith

as Mr. Hayes

as Producer Dobosh

as Walter Kaufman

as Mayor

as Mr. Deever

as Mort Borrow

as Moderator

as Bradley

as Albert Meng

as Dr. Streeter

as Dr. Rupert Bulfinch

as Sensenbrenner

as Uncle Redley

as Ambassador (uncredited)

as Dr. Glass

as George Leander

as Vincent Nather

as Julius Klawheimer

as Dr. Bell

as Jed Hewitt

as Newsman on Phone (uncredited)

as Winslow, Gibson's Secretary (Uncredited)