Tobias Menzies Biography: British actor Tobias Menzies was born on March 7, 1974. Prior to his role in Rome, most of Tobias' appearances were in British TV, portraying characters in shows such as Midsomer Murders, Casualty and A Very Social Secretary. He also had roles in big name movies such as Finding Neverland and Casino Royale. Marcus Junius Brutus is portrayed by Tobias Menzies on HBO's historical drama series Rome. The son of Servilia of the Junii, Marcus is a young man from the patrician class with a cool and reserved exterior, torn between his beliefs and his loyalty towards Caesar. Because of his illustrious background, people expect more from his actions.