Or more mundanely an horse archer:
He is one of A&A's casualties: note the blighty wound inflicted by a pointed implement of some description.
For comparison purposes here he is pictured with a Foundry Scythian:
With regard to moving the Parthian Horde forward I'm still undecided whether to carry on with A&A for the horse archers(£8.99 for 3, free postage) or substitute Foundry Scythians (£13.00 for 3, lots of postage) which I prefer from an aesthetic point of view. What price beauty eh?