Gustaf Gründgens was a prominent German actor and director, widely regarded as one of the most influential figures in German theater during the early to mid-20th century. He was born on December 22, 1899, in Düsseldorf, Germany. Gründgens gained significant acclaim for his theatrical performances, especially his portrayal of Mephistopheles in Goethe's "Faust," a role he played many times and that cemented his reputation in German theater.

Gründgens' film career included notable works such as "M" (1931) directed by Fritz Lang, where he played the role of Inspector Lohmann. He also starred in "The Captain from Köpenick" (1956), a performance that earned him significant recognition. Throughout his career, Gründgens received several awards, including the National Prize of East Germany and the Filmband in Gold for lifetime achievement.

His tenure as the intendant (artistic director) of the Prussian State Theatre in Berlin and later as the director of the Deutsches Schauspielhaus in Hamburg allowed him to exert considerable influence over German theater, navigating it through the politically tumultuous years of the Nazi regime and post-war Germany. Gründgens passed away on October 7, 1963, leaving behind a complex legacy as both a celebrated artist and a controversial figure due to his political navigations during the Nazi era.