Throughout the annals of history, there have been few figures as reviled as Lucius Domitius Ahenobarbus, better known as Nero Claudius Caesar Drusus Germanicus, or more simply, Nero. Even today, he remains one of the Roman Empire's most famous – or notorious – figures, a villain whose impact on popular culture is so vast that his name crops up consistently to this day in literature, film, TV and mediums as unlikely as video games and anime.

Nero ranks among the very worst of the Caesars, alongside the likes of mad Caligula, slothful Commodus, and paranoid Domitian, a figure so hated that, in many ancient Christian traditions, he is literally, without hyperbole, considered the Antichrist; according to a notable Biblical scholar, the coming of the Beast and the number 666 in the Book of Revelation are references to Nero. He was the man who, famously, "fiddled while Rome burned", an inveterate lecher, a murderous tyrant who showed little compunction in murdering his mother and who liked to use Christian martyrs as a source of illumination at night – by burning them alive. His economic policies, according to many historians, virtually bankrupted Rome. 

Having left no heir, Nero's death plunged the empire into confusion and chaos, bringing to an end the Julio-Claudian lineage while at the same time offering no clear rule of succession. This presented the opportunity for influential individuals in the empire, and in particular provincial governors who also commanded large military garrisons, to express and further their own ambitions to power. The result was a period of instability and civil war as several pretenders to the throne, among them the emperors Galba, Otho and Vitellius, gained and lost power, until finally the emperor Vespasian seized and retained the imperial principate. Vespasian subsequently imposed order and discipline on a chaotic empire and went on to establish the Flavian Dynasty.