The CK-3 was designed for automated scrap recovery — a quadruped platform that roams salvage yards and industrial waste sites, identifying valuable materials, cutting them free with its jaw-mounted plasma cutter, and carrying them back to collection points. Crucible sold thousands to industrial recycling operations. Then the Gray Zone got hold of them.

The CK-3's jaw-mounted plasma cutter — designed to cut through industrial scrap metal — works equally well on armor, vehicles, and people. Its chassis is built to absorb impacts from falling debris and industrial accidents, giving it the durability of a light armored vehicle. And its scrap-identification AI, designed to locate and prioritize valuable materials, was trivially reprogrammed by the Gray Zone tech-runners to identify and prioritize human targets instead.

The Junkyard has become the most common combat automaton in the Gray Zone — not because anyone designed it for war, but because it was cheap, available, and easy to weaponize. the Gray Zone gangs, resistance cells, and desperate individuals have all acquired reprogrammed CK-3 units. The units still look like industrial equipment — scarred, dented, covered in cutting marks and welding slag — which gives them a ramshackle appearance that disguises genuine lethality. A Junkyard doesn't look like a weapon. It looks like a piece of garbage that happens to be able to cut you in half.