Daleks

They're genocidal, evil, maniacal, destructive, hateful, disgusting, fearsome and awesome. Not only that, they come in a variety of colours. They even have accessories, such as toilet plungers, egg whisks and the ability to travel in time and never miss when shooting people with their laser-egg whisks. Notable Daleks are given names, and are collectively known as the Cult of Skaro.

But they're not robots! No, they actually have weird gooey squids inside those shells, and they have one eye, and they can talk and they can grab you with their slimy tentacles!