Sometime around 19 BBY, Hexx and his squad, under the command of Clone Commander Mayday, were assigned to guard an Imperial supply depot on the planet of Barton IV. After more than a year of being stationed on the post, the majority of Mayday's squad had been killed fighting off local insurgents, leaving behind Hexx, Veetch, and Mayday as the only surviving troopers by the time clone commando CT-9904 "Crosshair" and Imperial Lieutenant Nolan arrived to reinforce the squad in around 18 BBY.
While Crosshair and Mayday were out surveying the depot's perimeter during a blizzard, the Imperial depot was attacked once more by the local insurgents. As he rushed to the depot's defense, Hexx was killed during the attack. Mayday would later retrieve Hexx's helmet and display it alongside the helmets of his other deceased men inside of the Imperial depot.
A clone of the bounty hunter Jango Fett, Hexx was a human male that stood 1.83 meters tall.
As a clone stormtrooper, Hexx was equipped with standard-issue Phase II clone trooper armor, and was armed with a DC-15A blaster carbine. After more than a year without maintenance or repair, Hexx's armor was broken and disheveled, and was loosely held together by cloth wrappings.