[@Thinslayer]

Well that gives me an idea, one of these constructs either had enough time after the last war to chill out and think about life, or died and now a ghost is puppeting its body. If the body gets destroyed, the ghost doesn't necessarily vanish, but it can't move depending on what happens. No legs means it has to drag itself. No head means it had to run around like a headless chicken looking for its head, etc.