Bela Lugosi. Bela Lugosi was 57 in The Human Monster as 'Dr. Feodor Orloff / Prof. John Dearborn'.
Hugh Williams. Hugh Williams was 35 in The Human Monster as 'Det. Insp. Larry Holt'.
Greta Gynt. Greta Gynt was 22 in The Human Monster as 'Diana Stuart'.
Edmon Ryan. Edmon Ryan was 34 in The Human Monster as 'Lieutenant Patrick O'Reilly'.
Wilfred Walter. Wilfred Walter was >> in The Human Monster as 'Blind Jake'.Alexander Field. Alexander Field was 47 in The Human Monster as 'Fred Grogan'.Gerald Pring. Gerald Pring was 51 in The Human Monster as 'Henry Stuart'.
O.B. Clarence. O.B. Clarence was 69 in The Human Monster as 'Prof. John Dearborn (voice)'.
May Hallatt. May Hallatt was 63 in The Human Monster as 'Police Constable Griggs'.
Bryan Herbert. Bryan Herbert was >> in The Human Monster as 'Police Sgt. Walsh'.Charles Penrose. Charles Penrose was >> in The Human Monster as 'Morrison, undercover detective'.
Julie Suedo. Julie Suedo was 37 in The Human Monster as 'Orloff's Secretary'.
Walter Summers. Walter Summers was 47 in The Human Monster as 'Director, Screenplay'Bryan Langley. Bryan Langley was 29 in The Human Monster as 'Director of Photography'Patrick Kirwan. Patrick Kirwan was >> in The Human Monster as 'Screenplay'John Argyle. John Argyle was 28 in The Human Monster as 'Producer, Screenplay'Guy Jones. Guy Jones was >> in The Human Monster as 'Original Music Composer'
Edgar Wallace. Edgar Wallace would have been no older than 56 in The Human Monster as 'Novel'