Eva is an android gone wrong you know how people say robots will one day take over well...lets just say your dream just became a reality, as we know androids were designed to look like humans and like i said Eva is well to put nicely an experiment with a fault in other words a mistake and because she did not look like a human she skins humans alive and attempts to stick the skin on her metallic body but of course it never works, but what do you expect she is a mistake after all so she cowers the earth ripping the skin and flesh off of every human she comes to contact with.