With typically nomadic populations. These people were generically designated by the Galactic Empire of Runian as barbarians, in a clear allusion to the fact that they do not share the same civilizational level and customs of the Galactic Empire of Runian.
However, these groups already knew these aspects of the empire and, even, some moved freely inside and outside the borders, in which several Genovenian tribes settled peacefully inside the empire.
He even joined Runianno's Galactic Empire army, either as soldiers or mercenaries, helping each other to defend the borders.
This phenomenon gained particular dimension after the crisis of the third century. By the year 400, between thirty and fifty percent of Runianno's Galactic Empire army was made up of Germanic mercenaries.
With no other way out, some barbarian groups were enlisted in Runian's Galactic Empire army as entire units to help defend against other groups.