Ok, but how do the robots do the terminating? How do they actually seek and destroy? Do they understand all the different ways humans know how to cloak themse

Ok, but how do the robots do the terminating? How do they actually seek and destroy? Do they understand all the different ways humans know how to cloak themselves? Do they kill everything living, or will they know how to distinguish humans from other living beings reliably? If even one Evil Overlord robot is captured and studied, how much can be gleaned which will allow them to be exploited? If the Evil Overlord deploys these robots and leaves even one exploit open then the entire swarm is compromised and Evil Overlord is overthrown. I can see it working if this is a sneak attack and they take a large percentage in a short amount of time, but that would require a lot of build up of technology by this Evil Overlord without being exposed... not impossible, but still implausible in my book.