The Master of the World (German: Der Herr der Welt) is a German science fiction movie made in 1934 (released in the US in 1935). Its themes are the replacement of human labor with robotic replacements, and the threat to humanity by robots used as war machines. It was directed by Harry Piel and made by Ariel production.
Walter Franck, playing "Wolf", as the half-crazy assistant to Walter Hanssen's "Dr. Heller", an inventor of robots, murders his master, and attempts to take over the world with his death-ray equipped robots.