Brigitte Helm (17 March 1906 – 11 June 1996) was a German actress, best-remembered for her dual role as Maria and her double, the Maschinenmensch, in Fritz Lang's 1927 silent film Metropolis. Description above from the Wikipedia article Brigitte Helm, licensed under CC-BY-SA, full list of contributors on Wikipedia.

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Brigitte Helm was a prominent German actress of the Weimar cinema era, celebrated worldwide for her breakout performance in Fritz Lang's 1927 masterpiece Metropolis.
She is best known for her groundbreaking dual role as the saintly Maria and the Maschinenmensch robot in Metropolis, as well as starring in L'Argent and Alraune.
She maintained a prolific film career during the late silent and early sound eras from 1927 until her retirement from acting in 1935.