What is a Xenomorph,
Xenomorph or Internecivus raptus is a highly evolved brood species originating on an unknown planet.
standing upright, the Xeno Morph are bipedal in form, though depending on their host species, they will either adopt a more hunched stance, or remain quadrupedal when walking or sprinting. Their overall stance and general behavior is a result of the mixture of the DNA of the embryo and the host. They have a skeletal, biomechanical appearance and are usually colored in muted shades of black, gray, blue or bronze. Their body heat matches the ambient temperature of the environment in which they are found, so they do not radiate heat, making them indistinguishable from their surroundings through thermal imaging. In most of the films, adult Aliens are capable of running and crawling along ceilings and walls.They have great physical strength, having been shown to be capable of breaking through welded steel doors in numbers.
Aliens have segmented, blade-tipped tails.which they wield effectively as a weapon
the Aliens are not sapient "tool-makers" - in other words, they lack a technological civilization of any kind, and are instead primal, predatory creatures with no higher goals than the propagation and self-preservation of their species, including the elimination of other lifeforms that may pose a threat to their existence. Like wasps or termites, Xenomorphs are eusocial, with a single fertile queen breeding a caste of warriors, workers, or other specialists strains. The Aliens' biological life cycle involves traumatic implantation of endoparasitoid larvae inside living hosts; these "chestburster" larvae erupt from the host's body after a short incubation period, rapidly mature from juvenile into adulthood within hours, and seek out more hosts for implantation.
