Gnaeus Pompey Magnus is a character in the HBO/BBC2 original television series Rome, played by Kenneth Cranham. He is depicted as a legendary general, past the days of his prime, who tries to recapture the glories of his youth as much as to do what is right for the Republic. The real Gnaeus Pompeius Magnus was a Roman general and politician, who, while as ambitious as Caesar, and just as unorthodox in his youth, chose to ally himself with the optimates in opposing Caesar and supporting the traditional Roman Republic.