Once humanity is a mere memory, there will be no more need for buildings. The ERO Robot is helping us prepare for that future by quickly and efficiently demolishing buildings. The ERO works by injecting high powered jets of water into the cracks into walls then sucking up the concrete as it crumbles away.
Water jets strong enough to destroy concrete are a formidable weapon against humans. But we won't have to worry about that. By the time the ERO's are deployed, humans will be long gone.
We'll be watching from the hills as the last traces of our existence are snuffed out. But lucky for us, we'll be too busy running and hiding from the other 14 robots on this list to worry too much about it.
