Actually, it's a standard-bearer, although you don't see the standard in this pic. In the video you can see the standard-bearers, carnyx-bearers and the King of the Boii himself!
The Argoi are the celtic nobles and their vassals include the Solduroi from Aquitania, the Kombaragoues from the Boii and others in the Gallic tribes. The Argoi are one of the most powerful infantry units of the Celts and they are better than the Kombaragoues.
EDIT: Praetor beat me to the answer! I think I write too much.![]()
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