The Predaliens most famous appearance was in Aliens vs Predator: Requiem where it infested the town of Gunnison Colorado along with the other Xenomorphs. The dreadlocks were later to be grown with age. As a chestburster it showed that it already had fully developed mandibles not only on the main mouth, but on the inner jaw as well. The Predalien in canon media was first seen as a chestburster in cameo at the very end of Alien vs Predator. Later, though, the Predalien was offically confirmed as a female, and the reason it could infect women with Xenomorph embryos without the aid of a facehugger, is so she could quickly grow her hive before she developed the eggsack and became immobile. It could also explain why it limits its host to females, pregnant or not. Its reproduction method is described as a 'side effect' of the potent Predator DNA, which gives them more to work with. However, in the film's official commentary, it is mentioned as a male. It is possible that the Queen in Aliens was capable of reproducing via sending embryos down women's throats when she had to yet develop into a fully fledged Queen. On a side note, the Predalien's crest in Aliens vs Predator: Requiem looked a great deal like a fully matured Queens. However, this theory would imply that we should see human-spawned Xenomorphs reproducing like humans. However some people think that this form of reproduction is gained from the Predator host the Predalien spawned from. In various interviews and commentary by the directors, they said that the Predalien was turning into a queen and that this form of reproduction is a way for a young queen.

With the jaw down, it implanted about 5 Xenomorph embryos per each host. It did this by latching on their face by using their mandibles, and shoving its inner jaw down a woman's throat. In Aliens vs Predator: Requiem the Predalien was seen able to impregnate women. Their methods of attacking prey, however, are similar to those of a wolf or a lion: they circle around their intended victim, growl, then snap them up. They are extremely deadly, and can use their sharp tail to dice someone into pieces. A 'predalien's' appearance and behavior is similar to the typical human-spawned Xenomorphs, albeit with the telltale hair-like appendages of a Predator.

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