I realize there are probably multiple threads on this subject, yet i ask 'was attila the Hun Mongolian or Turk?' Same question goes for the 'Hun Empire'.
From what i understand Attila took over a Indo-Iranian/Scythian Empire, possibly spoke a early dialect of Bashkir and has been said to be of ethnic Turk and/or Goth. So there seems to be a lot of confusion going on about the Man & Empire.
Judging from the location of the Empire, it encomposed a large tract of Europe and central Asia. There were Turkish people from Bulgaria-Ukraine on to the east. It seems judging by location that he was most likely Turk from the region, more so than from other groups. But that is but a guess.
I think there was no such a big difference between Turkic & Mongolic peoples in that time (Hunnic era).
Alp Arslan :"What would you do if i were brought before you as a prisoner?" Romanos :"Perhaps i'd kill you or exhibit you in the streets of constantinople" Alp Arslan :"My punishment is far heavier. I forgive you and set you free..."