Nixels are small and seemingly harmless; but they are actually vicious, annoying, crazy and destructive creatures who are spread all over the land of the Mixels. Their society operates more like a virus, and they live to tear down and break apart the world around them, including any combinations that the Mixels create. There is nothing the Nixels hate more than when two or three Mixels combine together and get super powers. And they can only say stuff in small sentences