Phil, your army in force is a masterpiece, i'm in love !!
Concerning the Huns, you're right, they never fought in West roman regular unit. But you can add some Huns to your army with two" excuses":
- 300 mounted huns were serving as personnal bodyguards (bucellarii, here are mine, even if i choose to make some roman/german ones :
https://comitatusgaulois.wordpress.com/2016/10/19/bucellarii-bucellaires/ )of Stilicho, the most important roman general at the beginning of the fifth century. they were so loyal that they had been slaughtered with him when the Emperor ordered its death.
- the same Stilicho called for hunnic help during the most important invasion Rome never faced : Radagaisus in 405, with 200 000 people (it seems that the figures are true, even if a part of it was composed by non-fighters
). The king of western huns, Uldin, came with its army and helped to destroy the invaders. In these case they were surely foederati, allies in roman service.
But concerning the miniature itself, i have to admit i'm not fan of it : to me it looks like a redskin !
unfortunately, the manufacturer produced huns that looks like a mixture between mongols and indian, ignoring historical facts like
artificial cranial deformationGear composed by a mix of sarmatian and (Greek) bosphoran influences at least at the beginning
Ethnic diversity : the "huns" is a confederation of submitted people, mostly germanic. Real huns always been a minor fraction of their own empire.
I guess your horseman is from Lucky toys, a manufacturer who commit an horrible late romans set. Their huns are slighlty better, but still...