Kevin McKidd Lucius Vorenus Actor Ray Stevenson Titus Pullo Actor Ciarán Hinds Gaius Julius Caesar Actor Kenneth Cranham Pompey Magnus Actor Polly Walker Atia of the Juli Actor James Purefoy Mark Antony Actor Tobias Menzies Marcus Junius Brutus Actor Lindsay Duncan Servilia of the Junii Actor Indira Varma Niobe Actor Max Pirkis Gaius Octavian Actor Kerry Condon Octavia of the Julii Actor Lee Boardman Timon Guest Star Nicholas Woodeson Posca Guest Star Suzanne Bertish Eleni Guest Star Esther Hall Lyde Guest Star Chiara Mastalli Eirene Guest Star Coral Amiga Vorena the Elder Guest Star Manfredi Aliquo Castor Guest Star Norma Atallah Female Merchant Guest Star Lynda Baron Madame Guest Star Lidia Biondi Merula Guest Star Simon Callow Publius Servilius Guest Star Francesca Fowler Egeria Guest Star Georgie Glen Poppea Guest Star Ian McNeice Newsreader Guest Star Andrew Scarborough Milo Guest Star John Boswall Curial Magistrate Guest Star Bruno Heller Executive Producer William J. Macdonald Executive Producer John Milius Executive Producer Anne Thomopoulos Executive Producer Frank Doelger Executive Producer Lucy Richer Executive Producer