A cannoneer of the Silvermane Guards who wields a portable hand cannon into battle.
Definitely not Sampo Koski in disguise. There is absolutely no way a handsome, esteemed, legitimate merchant that is Sampo Koski would ever care for petty prizes & trouble himself for it. Never.
Dressed in blue military garb, a great coat for the icy climate of the planet, & wielding a hand cannon as large as himself. It takes great strength to weild the cannon alone, add the ammunition & the force of recoil.