Octar was a Hunnic ruler. His rule dates are unknown, yet it is believed he started around 420 AD. His relationship to the previous Hunnic ruler Charaton

Charaton

Charaton , also known as Aksungur or Aksuvar, was said to be the first of the kings of the Huns from c. 410–422. It is believed that Charaton ruled mostly the eastern part of the Hunnic Empire....

, mentioned by Olympiodorus in 412/413, is uncertain.

According to contemporary historical sources, Octar ruled together with his brother Rugila

Rugila

Rugila also referred to as Rua, Ruhas, Ruga and Rona , was a warlord who was a major factor in the Huns' early victories over the Roman Empire. He served as an important forerunner to Attila the Hun during the fifth century AD. Initially he had ruled together with his brother Octar , who died ca....

 in the form of a dual kingship, similarly like his nephews Attila and Bleda

Bleda

Bleda was a Hun ruler, the brother of Attila the Hun.As nephews to Rugila, Attila and his elder brother Bleda succeeded him to the throne. His reign lasted for eleven years until his death. While it has been speculated throughout history that Attila murdered him on a hunting trip, no one knows...

. He is very probably identical with the Hunnic leader Uptaros, who died ca. 430 (allegedly from the excess of food) during a military campaign against the Burgundians on the Rhine . The next day, his army was attacked by the Burgundians and destroyed. After Octar's death, his brother Rugila

Rugila

Rugila also referred to as Rua, Ruhas, Ruga and Rona , was a warlord who was a major factor in the Huns' early victories over the Roman Empire. He served as an important forerunner to Attila the Hun during the fifth century AD. Initially he had ruled together with his brother Octar , who died ca....

ruled as a sole king of the Huns until his death ca. 435.