Predator
Predator is a 1987 movie starring Arnold Schwarzenegger about a team of mercenary special forces soldier being attacked by an alien trophy hunter. It is also the common term for the aliens themselves.
Brain Bug
In the 1987 movie, the "Predator" was an alien trophy hunter who used advanced technology to hunt humans, specifically targeting teams of elite soldiers who presented more of a challenge than unarmed civilians. In sequels, this individual became the model for a monolithic culture, an entire civilization of aliens who live to hunt for sport.