The "Maschinenmensch" is an archetypal example of the Frankenstein complex, where artificial creations turn against their creator and go on a rampage. Artificial beings with a malevolent nature were a popular theme at the time, as seen in films such as "" or Marcel Lherbier's "L'Inhumaine". In a once-missing part of the film, Rotwang explicitly instructs the robot to pervert Fredersen's orders and help bring down his worst enemy, which helps explain her destructive behaviour. Different incomplete restorations of the film made since the original offered different explanations of the robot's behaviour (one, for example, saying that Rotwang has in fact lost control of the robot and it is not under anyone's control), or no explanation at all. The 2010 restoration, complete for all practical purposes, depicts Rotwang deliberately instructing the robot Maria, thus finally clarifying the gynoid Maria's motivation.