Or basically the Scordiscii

They are still monsters
Anyone who thought the Naked Bastards are tough, try fighting the Scordiscii. They are basically such a versatile and perfect unit. After getting armour upgrade they have 30 armour. I had them fight the Hetairoi and Galatikoi Tindonae, at the same time... , and they won, after a cavalry charge and intimidation from naked men.

I really recommend them to anyone interested in super infantry unit.