Tinto Brass Director Malcolm McDowell Caligula Actor Teresa Ann Savoy Drusilla Actor Helen Mirren Caesonia Actor Peter O'Toole Tiberius Actor John Steiner Longinus Actor Guido Mannari Macro Actor Paolo Bonacelli Chaerea Actor Leopoldo Trieste Charicles Actor Giancarlo Badessi Claudius Actor Mirella D'Angelo Livia Actor Anneka Di Lorenzo Messalina Actor Lori Wagner Agrippina Actor Adriana Asti Ennia Actor John Gielgud Nerva Actor Gore Vidal Screenwriter Bob Guccione Producer Franco Rossellini Producer Silvano Ippoliti Cinematographer Nino Baragli Film Editor Danilo Donati Art Director