Rats infantry come from the same urban carcass as the rest of their civilization. Office wreckage becomes armor, server parts become respirators, signboard metal becomes shields, and hierarchy runs from street recruit to human remainder wearing a suit of databases.
Every body in this set shows a level of control. Some are still being coerced, some have been chemically refined, some have been hypnotically emptied, and some walk close enough to autonomy that the cult has to buy their usefulness instead of owning it outright.