Zabergan (Medieval Greek: Ζαβεργάν) was the chieftain of the Kutrigurs, a Turkic nomadic tribe of the Pontic–Caspian steppe, after Sinnion.
[1] Either under pressure from incoming Avars,[2] or in revolt against the Byzantine Empire, in the winter of 558, he led a large Kutrigur army that crossed the frozen Danube.
The army was divided into three sections: one raided south far as Thermopylae, while two others the Thracian Chersonesus and the periphery of Constantinople.
[5] The transit of such big distances in a short period of time shows that the Kutrigurs were mounted warriors,[3] and Zabergan's raiders were already encamped near the banks of the Danube.
[3] However, once again Emperor Justinian I (r. 527–565) managed to persuade the Utigur chieftain Sandilch to attack the Kutrigurs, which resulted in the decimation of both.