Predators from the Predator movies are an ever-popular subject for the lack of global IP control. For those who are willing to condone such practices to get some alien minis, here's the latest and perhaps most blatant effort, this time from Switzerland:
http://www.predastore.ch/lang-en/11-kits-28-mm

They are expensive limited edition resins and since the company is Swiss you'll pay postage through the nose too, but at least they are rather nice and well animated sculpts.