Freder Frederson is the main character of Metropolis, or the son of the mastermind of Metropolis, who found a kindhearted girl in the underground city while the she explained the Tower of Babel myth. Freder falls in love with the girl, named Maria.
At the last part on the film Freder fights Rotwang to the death. He is what is prophecised to be "The Mediator" meaning the "Mediator between the hands and the mind, the heart." Freder is the "heart" that brings the working class "hands" together with the upper class "mind". Thus, he is the hero and main character of the epic story of Metropolis.
Freder was played by Gustav Frolich.