Facehugger

From AvP Online Encyclopedia

Parasitic life form the aliens use to impregnate their victims with alien embryos.

Facehuggers have eight three-knuckle legs used to wrap around a victim's head, a long prehensile tail they use to wrap around a victim's neck to prevent the facehugger from being removed from the victim, and a tube that extends from the facehugger's underbelly. This tube goes down the target's throat, and deposits an embryo in their chest. Facehuggers are born inside eggs, which are laid by the Queen, with one facehugger per egg, and one embyro per facehugger. When a facehugger is laying an embryo inside a host, a process which takes anywhere between a few hours to a few days, the facehugger replaces its own skin with silicon to protect itself from the elements. After an embryo has been implanted, the facehugger dies. There are three types of facehuggers, each one depositing one of three alien embryos: drone alien, as seen in the incident in Hadley's Hope, Queen alien, as seen in Hadley's Hope and on the Auriga, and warrior alien, as seen on the Auriga, Fiorina 161, and on the Nostromo.

Source; A, A2SE, A3, A4, CMTM