Avars or Hebreo-Iverians or Bulgars (Varguni) were a mixture of Hvarezmi and Sabir-Hunno Bulgars of Csaba.

The earliest mention of this union in European history is by Priscus, who declared in 463 AD that a mixed Saragur, Urog and Unogur embassy asked Byzantium for an alliance, having been dislodged by Sabirs in 461 due to the Hvarizmi drive towards the west. The Hvarezmi migrated from Hvarezam, to their present location south of Transcaucasian Iberia which was originally populated by the Alarodian Hurrians from Subartu. The Y-Chromosomal J Haplogroups typical of Iverian men are still common today in the area of ancient Subartu and Szekelyland. The modern Arab Encyclopaedia states that the Magyars originated in this area. The Hvarezmi invasion of the Caucasus resulted in the establishment of an Hvarezmi ruling dynasty in Sarir, a Moseian state in the Dagestani Highlands, where the Caucasian Avars now live. It is known that with the mediation of Sarosios in 567, the Göktürks requested Byzantium to distinguish the Varkun of Pannonia as "Pseudo-Avars" as opposed to the true Hvarezmi of the east, who had come under Göktürk hegemony.