Yautja???

It was in Aliens vs. Predator: Prey - it was the start of the comics that were spawned in the 90s. As far as I remember, these graphic novels, comics and novelizations came to be because at the end of Predator 2, when Danny Glover is in the spaceship towards the end of the movie, there is a collection of skulls on a wall. One of them happens to be Xenomorph skull... someone saw that and the lightbulb went on...

The term was initially introduced in the novel Aliens vs. Predator: Prey, penned by S. D. Perry and Steve Perry.