The Proto–Xenomorph, also known as the Protomorph, was a species of endoparasitoid creature bearing similarities to the Xenomorph. Stages of the Proto–Xenomorph life cycle included the Trilobite and the Deacon. Proto–Xenomorphs were spawned by living constructs known as Proto-Hives, which were in turn created by the beings known as the Fulfremmen.

Life cycle[]

Hessdalen Lights[]

Main article: Hessdalen Lights

Ionic proto–plasmamorphs, otherwise known as the Hessdalen Lights, were the first stage in the Proto–Xenomorph life cycle. These mobile spores would attach to a station or ship and begin its transformation into a Proto-Hive.


Main article: Utero-Pod

The Utero–Pod was the next stage in the Proto–Xenomorph life cycle. As it gained a foothold in the structure to which it was attached, the Proto–Hive would sabotage life support systems and secure hosts in a centralized chamber. There, the hosts were suspended from the ceiling of the chamber and injected with genetic material; this began their transformation into proto–Ovomorphic Utero–Pods. These pods, also dubbed "Womb–Bats", would eventually disgorge Naiads.


Main article: Naiad
Baby trilobite moviestill

The Naiad

The Naiad was a small, tentacled creature resembling a four–armed squid, and as such earned the label of "Squid–Baby". The Naiad would attempt to hide itself in a safe location until its tentacles divided and it progressed to its next form.


Main article: Trilobite

The Trilobite

The Trilobite was the adult form of the Naiad, and was capable of infecting Engineers or humans with an embryo. This embryo would develop into a Deacon, leaching biological material from its host and eventually killing them.


Main article: Deacon

The Aethon, or Deacon, was the product of Engineer or human infection. When ready, it would use its sharp, curved head to cut its way out of the now–dead host.


Main article: Archdeacon

The Adjutor, or Archdeacon, was a hypothetical evolution of the Deacon envisioned by the scientific community, and was described as possibly retaining the features of its progenitor but in a more extreme capacity.