Allyn Narthax was a human male snowtrooper corporal within the Galactic Empire's elite Stormtrooper Corps. In 3 ABY, he was stationed on Rothana. He, along with snowtroopers Captain Kyp Trasidar and Sergeant Doran Kruton, as well as Imperial heavy trooper Sergeant Ulen Orsalan, were tasked by Colonel Irrv to investigate a Rothana Heavy Engineering storage facility for Rebel Alliance spies. They breached the facility and killed several Rebel smugglers, though another escaped with a cargo transport of vehicles.