Epics and triumphs: Roman Emperors

Everyone has seen a Roman emperor. Whether at the British Museum's current Hadrian exhibition, or in Derek Jacobi's stuttering Claudius, or in Joachim Phoenix's psychotic Commodus, most people are aware of Roman emperors to some extent or other.1 They can be semi-legendary, or have been entirely ignored by  posterity. Some of the most famous are notorious - and some of the legends are now indistinguishable, in the public imagination, from fact. There have been multiple attempts to categorise the various Roman emperors, in multiple media.