Facehugger

A Facehugger is the first stage in the life-cycle of the fictional Xenomorph aliens seen in the Alien movie series. It has no real attack abilities on its own, besides its impregnation role. The Facehugger is hatched from a large organic-looking egg and laid in groups by a Xenomorph Queen. Once laid, the egg remains immobile until it senses a suitable host organism. The eggs are covered by a layer of clear liquid that may sense nearby victims.

Once a suitable host that can maintain a alien embryo, is close, the Facehugger emerges from the egg slowly. The creature is highly aggressive in its search for a human host to impregnate and when this happens the implantation tube of the facehugger grows stiff and the facehugger must find a suitable host(the facehugger prefers women human hosts for their breeding beyond the puberty cycle.) Its bony fingerlike legs allow it to scuttle rapidly, its prehensile tail can launch it in great leaps, and it is quite strong for its size.

The Facehugger's one goal is to make contact with the host's mouth for the implantation process, by gripping its long, bony fingerlike legs around the victim's head and wrap its tail around the host's neck slowly tightning the tail making the body unable to receive oxygen and making the now host open their mouth to receive oxygen so that the facehugger can prepare to insert an implantation tube into the mouth and down the throat without much struggle from the host. The host at this point is still awake and will stay awake until the facehugger is done with the implantation. They key for the facehugger to keep the host alive is to pump air through the implantation tube and into the host. The host cannot breath on his/her own due to the implantation tube down the oesophagus. After securing a a very firm and tight grip around the head of the host, it then inserts a large wet tube down the the throat of the host to release an egg or embryo in the host's inside chest. This process for the facehugger is the part of most difficulty because it's enormous tube for impregnation is so rather large that when it sticks it down the victims throat it may take hours due to the size of the tube, so the facehugger must take its' time while sliding the tube down the host's gullet, and it must pump much more air into the host at this time. Attempts to remove Facehuggers have generally proved fatal--the parasite will strangle its host with its tail if disturbed, either during the incubation process or even during the complete attaching of the host's face. Its acid blood means that it cannot be safely cut off, either. Once the alien embryo is safely within the hosts' chest and has begun to grow without the help of the facehugger, the Facehugger removes itself from the host's face and leaves, only to die a short time after; occasionally, however, the front lip-like end of the large tube or proboscis gets caught in the windpipe of the host and the facehugger may remain there like that until the host wakes up and dies of choking and gagging due to the lack of oxygen from the implantation tube. On the other hand, if the facehugger successfully removes itself from the hosts' face, minutes or even hours from the facehuggers' implantation the host will wake up with a thick clear slime or almost thick saliva all over their face and mouth and even in their throat due to the large implantation tube roughing up against the top of their throat and mouth. Seconds or minutes later, the host or now victim will experience a large crack breaking out in their rib cage with a great deal of pain, and the newly born alien will emerge from the victim who is now dead.

Superfacehugger
The Superfacehugger, sometimes called the Queen Facehugger, is a different type of Facehugger. The Superfacehugger has a black exoskeleton, a spiked tail, webbing between its crablike legs, and it carries either one Queen embryo, or a Queen embryo and a normal Xenomorph embryo (according to popular fan theories.) The Superfacehugger is seen only in the Special Edition of Alien³, and is often considered non-human impregnatable. Aside from those differences, the Superfacehugger is no different from the normal Facehugger but is meant to impregnate larger hosts. So the Superfacehugger cannot normally fit its larger implantation tube down through the asophagus of the normal facehugger's human host.

Facehugger