Hans Walter Conrad Veidt was a German-British actor. He attracted early attention for his roles in the films Different from the Others (1919), The Cabinet of Dr. Caligari (1920), and The Man Who Laughs (1928). After a successful career in German silent films, where he was one of the best-paid stars of UFA, Veidt and his new Jewish wife Ilona Prager left Germany in 1933 after the Nazis came to power. The couple settled in Britain, where he took citizenship in 1939. Veidt subsequently appeared in many British films, including The Thief of Bagdad (1940). After immigrating to the United States around 1941, he was cast as Major Strasser in Casablanca (1942), his last film role to be released during his lifetime.

The Man Who Laughs is a 1928 American synchronized sound romantic drama film directed by the German Expressionist filmmaker Paul Leni. While the film has no audible dialog, it was released with a synchronized musical score with sound effects using both sound-on-disc and sound-on-film processes. The film is an adaptation of Victor Hugo's 1869 novel of the same name, and stars Mary Philbin as the blind Dea and Conrad Veidt as Gwynplaine. The film is known for the grotesque grin on the character Gwynplaine's face, which often leads it to be classified as a horror film. Film critic Roger Ebert stated "The Man Who Laughs is a melodrama, at times even a swashbuckler, but so steeped in expressionist gloom that it plays like a horror film."