Dieter Jovanovic's father
From Tardis Wiki, the free Doctor Who reference
Dieter Jovanovic lost his father was during World War I, as well as many of his friends. Deeply affected by these losses, Jovanovic became a firm believer that Germany should seek revenge on the Allies for enforcing such a harsh peace. He went as far as seeking to cease the production of Fritz Lang's Metropolis with a captive Cyberman because it sought to promote a message of peace. (AUDIO: Monsters in Metropolis)