Often up there in the upper echelons of most articles listing Rome's worst emperors, it's fair to say that history has not been kind to Caracalla. Whether it was contemporary sources depicting him as a deranged Heracles and Alexander the Great loving megalomaniac or the 18th century historian Edward Gibbon labelling him 'the common enemy of mankind,' for centuries he has been an epitome of infamy.

To talk through what we know about this figure, and whether he deserves this reputation, Tristan was joined by Edinburgh University's Dr Alex Imrie, an expert on the Severan Dynasty and the author of The Antonine Constitution: An Edict for the Caracallan Empire.

Alex's Twitter: @AlexImrie23

Tristan's Twitter/Instagram: @ancientstristan

The first of a new miniseries about the Severans.