Home People Gustav Botz Gustav Botz movies Gustav Botz movies Gustav Botz Movies (5) Dr. Mabuse, the Gambler (1927) As (uncredited). He was 70 years old Nosferatu (1929) As Professor Sievers. He was 72 years old The Head of Janus (1920) As o. A.. He was 63 years old The Secret of the American Docks (1919) As James Mistoll. He was 61 years old Ikarus, the Flying Man (1918) As Günthers Father. He was 61 years old
