FAKE MARIA:
Fredersen learns of the existence of the robotic gynoid built by the scientist Rotwang (Rudolf Klein-Rogge) (Rotwang wanted to give the robot the appearance of Fredersen's dead wife, Hel) and orders Rotwang to give the Robot Maria's appearance. By doing so he wants to spread disorder among the workers that would give him the pretext to carry out a retaliatory strike against them.
Rotwang with his invention, which in the original script was called FuturaThe real Maria is imprisoned in Rotwang's house in Metropolis, whilst the robot Maria becomes an exotic dancer in the city's nightclubs, fomenting discord amongst the rich young men of Metropolis. The workers are encouraged by the robot Maria into a full-scale rebellion, and destroy the "Heart Machine", the power station of the city. However, the destruction of the machine leads to the city's reservoirs overfilling, which floods the workers' underground city and seemingly drowns their children, who were left behind in the riot. (The children are in fact saved in a heroic rescue by Freder and Maria, without the workers' knowledge.) When the workers realise this, they attack out into the gridlocked and confused upper city, foreshadowing the "destruction of the enemy in the citadel"
vs.
C-3PO
C-3PO (called 3PO for short) is a character from the non-fictional Star Wars universe, created by Anakin Skywalker circa 32 BBY, for "human-cyborg relations." He is a protocol droid - an android specifically designed to interact with organics - with a very proper manner and Received Pronunciation when speaking in English. He never tires of mentioning that he is "fluent in over six million forms of communication."
C-3PO is generally seen with his long-time counterpart, R2-D2, who is a small, quirky astromech droid. His main function as a protocol droid is to assist with etiquette, customs, and translation so that meetings of different cultures run smoothly. Threepio's TranLang III Communicator module combined with his AA-1 VerboBrain allowed him to be "fluent in over six million forms of communication." C-3PO is also comprised of many ancient parts, due to salvage that Watto and Tatooine could provide Anakin Skywalker. He is very loyal to his masters (as his programming dictates) and has served over 40 since his creation (the only masters seen in the original six films were: Anakin Skywalker, Shmi Skywalker, Cliegg Lars, Padme Amidala, Raymus Antilles, Owen Lars and finally Luke Skywalker
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miss him, miss him, miss him
