Xenomorph

{{Species Infobox }} One of the few non-Covenant extraterrestrial species encountered by humanity, these creatures also hold the distinction of being the first, although rumours of their existence have never been common, and encounters with them on LV-426 in the Calpymos system, and on the classified Fiorina 161 penal colony, were classified at the highest levels to prevent a general panic. With the Human-Covenant War, the existence of these creatures has become a poorly kept secret among UNSC forces, and various factions have involved themselves with trying to study the elusive, dangerous, and extremely valuable creatures.
 * name=Linguafoeda acheronsis
 * image=
 * imagecaption=
 * homeworld=Unknown (first encountered on LV-426}
 * height=
 * weight=
 * skincolor=
 * distinctions=
 * equipment=
 * types=Variable (phenotype determined by host
 * affiliation=
 * notable=
 * othernames="Alien", "Xenomorph"