The Facehugger is the second stage of the Xenomorph life cycle, bred for a single purpose: to secure a living host and implant a Chestburster embryo.
Upon hatching, the Facehugger becomes an aggressive ambush predator. Guided by heat, movement, respiration, and pheromones, it rapidly closes the distance before launching itself at a suitable host. Its powerful limbs restrain the victim while its tail coils tightly around the neck or torso, holding the host in place as implantation begins.
Once the embryo has been successfully implanted, the Facehugger's biological purpose is complete.
Within minutes, it dies.
Humanoid species are the preferred hosts due to their compatibility with Xenomorph development, but Facehuggers are highly adaptable.
Most living creatures weighing between 25 and 4,000 pounds are viable hosts, provided their internal biology can sustain embryonic growth.
Larger or smaller organisms may occasionally be used, though successful implantation becomes increasingly uncommon outside this range.
The resulting Chestburster often inherits physical traits from the host species, producing specialized Xenomorph variants.
Facehuggers possess no interest in feeding, defending territory, or prolonged survival.
Every action is directed toward locating a host.
If prevented from implanting, they remain active until killed or they eventually die from exhaustion and starvation.
They display remarkable persistence, often waiting patiently in darkness for prey to approach before striking with explosive speed.
Royal Facehuggers emerge only from Royal Eggs, typically created through Biomorphosis when a hive has lost its Queen.
Unlike standard Facehuggers, a Royal Facehugger carries multiple embryos and serves as the species' emergency colony restoration mechanism.
Rather than dying after a single implantation, it may successfully implant up to five hosts before its biological reserves are exhausted.
Its first implantation always produces a Queen.
The remaining hosts develop into Royal Guards and Worker Drones, providing the newly born Queen with the immediate protection and labor required to establish a new hive.
Once its final embryo has been implanted, the Royal Facehugger dies.
A single Facehugger represents the beginning of an infestation.
A Royal Facehugger represents the beginning of an empire.
Veteran Colonial Marines treat every Facehugger as a priority target, knowing that allowing even one to escape can condemn an entire colony within weeks.