|Justinian, Emperor of East Roman Empire|
527 - 265 CE
To begin with, the factionalists changed the style of their hair to a quite novel fashion, having it cut very differently from the other Romans. They did not touch the moustache or beard at all but were always anxious to let them grow as long as possible, like the Persians. But the hair on the front of the head they cut right back to the temples, allowing the growth behind to hand down in a disorderly mass like the Massagetae do. This is why they sometimes called this the Hunnish look.
Procopius, The Secret History
Penguin Edition translated by G.A. Williamson and Peter Sarris, with notes by Peter Sarris
Sarris adds the following footnote to the above passage:
The factionalists wore what in modern slang would be called "mullets." The long hair of the tribes of the Eurasian steppes was something of a preoccupation among Roman authors of a conservative mindset; Procopius' contemporary, the poet Corippus, describes an embassy of Avars that arrived at the court of Justin II as "shabby with their snake-like hair."
The Mullet. As fashionable today as it was 1500 years ago.