Isz
The main inhabitants of The Outback, the Isz are small, eyeless beings with egg-shaped bodies, arms and legs, about as large as housecats. The omnivorous white Isz of the Outback become cannibalistic black Isz when brought into the real world. They are stronger, faster, and have sharper teeth than white Isz. However in one instance, a single White Isz was able to cross over into the real world unchanged when there was a small punctured hole in an alley wall that directly connected both realities. The Black Isz proceeded to torture their less aggressive kin after its initial mission had been completed, showing the completely opposite degrees of aggression the two types exhibit. The Black Isz can assume different appearances depending on the clothes they wear, and their intent. If an Isz is dressed as an elderly woman, it appears as such to anyone who does not know already that it is an Isz. In the latter part of the series, Sara's Isz appear as pink, flying, eyeless fairies that explode if not kept in water.
Read more about this topic: The Maxx