High Quality Content by WIKIPEDIA articles! Marcus Junius Brutus is a historical figure who features as a character in the HBO/BBC2 original television series Rome, played by Tobias Menzies. He is depicted as a young man torn between what he believes is right, and his loyalty and love of a man who has been like a father to him. The real Marcus Junius Brutus was the most famous of Julius Caesar`s assassins, and one of the key figures in the civil wars that followed the assassination.