In the old world they were the discarded STEEL. the Broken and the outdated. They existed for decades, dumped in the wastelands, in massive rusting piles of trash. But years ago, through some unknown means, their A.I. were reactivated. They have survived by collecting parts from scrap heaps, and when they have the opportunity, ripping parts off of any STEEL units who become too slow or careless.
They are easy to recognize, with a look distinct from the other two factions. Their irregularly constructed bodies crafted from whatever they can get their rusted hands on. Their move sets are also irregular and dangerously unpredictable. They know what it means to be reduced to scrap, and they will do anything to keep themselves online.