Alien: Covenant
Xenomorph Life Cycle

Xenomorph Life Cycle

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ChestbursterMember935 XPJan-18-2017 4:38 AM

The xenomorph seems to propagate asexually (plant propagation) which would mean that every xenomorph is identical? Unless they change (get traits) depending on the host (e.g. humans)? If we take the film Aliens, all the xenomorphs would be identical since they all have sprung from the human settlers on LV-426? But if the host was an engineer?

The Life cycle seems to involve a living host (e.g. a human) which slowly disintegrates and changes into an egg (in which a face hugger will develope). The Face hugger seeks a new host and plants an embryo in the stomach (through a tube inserted in the victim's throat). The embryo will grow (feeding on the host) and eventually chew itself out and grow into a new xenomorph and the cycle will start all over again.

In The Thing, the alien could mimic its host’s individual traits and become identical with it which is something that the xenomorph apparently does not? But if the host is a different species (an ox in Alien 3) it will become somewhat different?

I wonder what would happen if you “fed” a xenomorph with the mutagen (the black goo)? What would it evolve into?

24 Responses to Xenomorph Life Cycle

Shasta cyclone

FacehuggerMember281 XPJan-18-2017 6:02 AM

what does the xeno do to make a human morph into an egg though? perhaps its blood?

A L I E N 4 2 6

FacehuggerMember444 XPJan-18-2017 6:05 AM

Yeah that's right. If you notice, the alien that came out of the bull has a quadrupedal stance 


ChestbursterMember935 XPJan-18-2017 6:52 AM

Shasta: We have carnivorous plants that trap insects, dissolve them with some strong chemical and take up the nutrients. We know that the xenomorph can produce acid. The rest of the transformation is in the genetical makeup, I suppose?

You're, right Alien426.


NeomorphMember1823 XPJan-18-2017 7:19 AM

it would suggest that the black goo and the xeno r def connected in some way. ridleys intention was to show the xeno morphed kane and dallas into eggs which would support this connection as the goo mutates what it infects. due to this I would think the xeno wouldnt morph into anything as possibly the black goo has the same base dna/ cell structure as the xeno???


DeaconMember10325 XPJan-18-2017 4:26 PM

If you fed the Xeno the Black Goo.... then you would end up with a Xeno-Hybrid that would be 50% Xeno and 50% what ever Xeno related Organism is contained in the Black Goo

If you mean Sacrificial Goo.. then maybe this is what the result was in those Urns... or at least off a related Ancestor or Evolutionary Predecessor

R.I.P Sox  01/01/2006 - 11/10/2017


DeaconMember10325 XPJan-18-2017 4:29 PM

As far as the Life Cycle..

Alien showed us in full cut (as with Star Beast) the Adult can Mutate the Genetic Material of a Host to become a Egg (Egg Morph) but these Eggs are larger.. so its interesting to see do they shrink?  or do they produce larger Organism.

Cameron ignored that and gave us the Queen.. which opens up the Chicken or Egg Debate..

I always felt the way to Merge both ideas.. was the Egg Morph would Produce a Queen or a Queen Face Hugger.

But i think the true Origin when revealed would be different to both Alien and Aliens...

R.I.P Sox  01/01/2006 - 11/10/2017


FacehuggerMember425 XPJan-18-2017 5:27 PM

I think maybe even the queen makes eggs by injecting black goo into the organic biomass she creates.  The drones or warriors just can't produce the biomass from eggsac, so they use what's around. 

And yes, the egg might shrink.

Safe? Of course he isn't safe, but he's good!


FacehuggerMember236 XPJan-18-2017 6:54 PM

I would rather make the egg morph leads to queen. So if a queen dies and leaves eggs...alien rise...egg morph a subject to become the new queen..bigger egg queen facehugger...and bam..

However queen is huge.alien 3 show us she borns of ripley..if they make it a a4...then we can assume it isnt totally canon..wich would be the best route.

Rewrite the queen life cycle...or a chosen alien warrior eggmorphing itself to queen status...i prefer the first mentioned.bringing back the eggmorph concept as the only way for common aliens to rise a queen that leads the hive and produces eggs to build the xeno hierarchy and population.

Erasing the alien impregnation we had on a4:-).since its a dream while ripley is in cryosleep woudnt be accurate aswell.




XenomorphMember1234 XPJan-18-2017 7:47 PM

"The Life cycle seems to involve a living host (e.g. a human) which slowly disintegrates and changes into an egg (in which a face hugger will develope)."

Living or dead hosts can be changed into eggs.

"The Face hugger seeks a new host and plants an embryo in the stomach (through a tube inserted in the victim's throat)."

It gestates in the chest; not the stomach.


ChestbursterMember935 XPJan-19-2017 4:27 AM

S.M: Yes, I have thought about that too. This is fiction, but if we want to try to make sense (scientifically) of it, the alien embryo is inserted in the host through a tube that goes either into the windpipe or the food pipe. If the alien grows in the lower part of the windpipe or in a lung, the host would probably suffocate. If, it grows in the upper part of the stomach, however, it would be fed and the host would eat a lot (which Kane does).

Movie fan

FacehuggerMember500 XPJan-19-2017 4:37 AM

@ chli

That makes sense.

Obsession is a Power, not a Curse ;)

Shasta cyclone

FacehuggerMember281 XPJan-19-2017 5:55 AM

wonder what happens to the xeno after it dies? with its exoskeleton and acid blood? it dissolves itself leaving no foot print?


EngineerAdmin21458 XPJan-20-2017 4:25 PM

Indeed how does that Chestburster embryo make its way through the esophagus? I knew it developed in the chest cavity behind the ribs but logically speaking, how would it get there? Most invasive parasites / worms we come in contact with are incapable of moving through membrane and tissue that way and generally stick to the walls of whatever organ they entered through. Although some, small enough I'm sure could make their way through. 

@Big Dave, imagine Black Goo infecting a Xenomorph?! Assuming of course the Xenomorph is not immune to its effects of course.


OvomorphMember89 XPJan-27-2017 12:26 AM

i wrote a poem about the life cycle somewhere i'll show you!
a child is hug a face. a child is born to make an egg. a child is born to hug...another face! a queen is born to end a race........and when the race is laid to waste...the queen and her soldiers..they die with haste!
you see now!? it all comes together! your eyes are open! and you're welcome!


FacehuggerMember236 XPJan-27-2017 1:40 AM

Never doubted your romantic twisted vision id.

You a peculiar one xD


DeaconMember10325 XPJan-27-2017 2:31 AM

"@Big Dave, imagine Black Goo infecting a Xenomorph?! Assuming of course the Xenomorph is not immune to its effects of course."

This is a interesting thing to bring up, we simply dont know... i would assume the Sacrificial Goo could break down a Xeno.

But the stuff in the Urns is open for debate.. i suppose it depends if the Genetic Code or Program within the Urns is different to the infected Organism.

Because it appears the  Hammepedes are evolved by the Black Goo and once they have been evolved so are a Hybrid of Black Goo Mutagen and Worm DNA.... they appear to swim in the Black Goo without being transformed any more.

We latter see the Hammerpede again (Milburn Mouth Burster Scene) and it has not changed.

So its hard to say really what happens if a Xeno is introduced to the Black Goo. I guess it depends what amount of Black Goo DNA the Xeno already has and what process and connection they have i.e which predates which.



R.I.P Sox  01/01/2006 - 11/10/2017


FacehuggerMember425 XPJan-27-2017 2:53 PM

@Shasta Cyclone "the aliens blood oxidizes after death completely neutralizing it" Bishop, Aliens

Safe? Of course he isn't safe, but he's good!


FacehuggerMember425 XPJan-27-2017 2:57 PM

I'm of the strong belief that the black goo is a retro viral agent with possible nanite enhancement that was based on a substance that the Xenos produce to propagate, egg morph, and take on genetic characteristics of their host. 

The LV-223 engineers botched their recipe.

Safe? Of course he isn't safe, but he's good!


ChestbursterMember554 XPJan-27-2017 3:50 PM


I'd happily accept that idea if it is presented in the films. It would maintain the mystique of the xeno whereas having their origin set as an intentionally manufactured weapon would detract from it.

I do find the idea that the engineers or (dare I say) David created them in a lab intentionally is interesting, but that will inevitably take the xenos down a few notches.

Ultimately there are only two theories I'd say would be a win-win for me personally.

The first is what you've already proposed. That the xeno origin remains a mystery, the engineers simply got a hold of their DNA and attempted to replicate them.
(I should mention that for this concept to work, we would have to accept that we may have never seen a real xeno in any of the films with exception to the AVP movies. It would depend on whether the derelict cargo is framed as collected or manufactured specimens)

The other concept I'd be equally satisfied with is the idea that the engineers accidentally created xenos billions of years ago when attempting to achieve some unrelated breakthrough (such as reproductive restoration or something similar.)
I find the accidental element critical (IMO) for the xenos to maintain their mystique (if the manufactured route is taken.) This would also perhaps be the scenario that would better fit with theories of factions. In such a scenario, perhaps once the engineers stumbled onto this accidental DNA ****tail, one faction would see opportunity to conquer the universe with the ultimate weapon while another would feel it was an abomination that should not exist.

Either way I'm hopeful that the xenos won't be robbed of their mystery.


NeomorphMember1823 XPJan-27-2017 4:14 PM


I have often thought that ur second concept there is true. for example. I believe the goo is the weapon and designed to wipe out organic life, not mutate it. the fact that shaw is impregnated by an infected Holloway surely couldn't have been in the engineers calculations when making the stuff could it? so then the trilobite is a fluke hence the deacon is a fluke. but this process has already happened thousands of years ago perhaps. so they infact, unintentionally, end up with 2 bio weapons?? or they believe the creature created by accident is some for of sign or next stage of evolution??


FacehuggerMember236 XPJan-27-2017 4:43 PM

i buy qes takes.

I also buy the take of the origin of xeno being a more primitive anscient beast with unique biology and bacteria traits.

So like finding a dog and turning it into a wolf, or a lion through technologic exprimentations engineers made.

So like we take venom from snakes to make remedys for diseases they take blood from this species or something and make goo and all other stuff, but their biology is so unique at a celular level that is constantly evolving when it finds a host. Kinda like venom symbiosis in spiderman no matter how they reverse it the bacterial traits allways find a way to evolve and take over lifeforms to dominate.

Then perfect organism could be tackled this way...the original beast was weaponised.


But i wil have a more cohesive theory when i see ac and see if those eggs were there or were created by david..and see how diferent is this so called he the origin..the anscient primitive specie thats gonna be weaponised by david? Or is he the weaponisee version already but still not refined..

This is the answer im looking foward


NeomorphMember1621 XPJan-30-2017 8:25 AM

About the black goo’s effect at a Xeno, I guess it depends if we consider the Xeno as the ultimate version of what the go is supposed to create or not. Suppose that the Xeno is just a result of evolution like humans are to apes then the goo being used at a Xeno would create something else. This is my guess but maybe someone else has a better explanation.


OvomorphMember89 XPJan-30-2017 3:22 PM

when a xeno eats black turns into a human!


PraetorianMember3070 XPJan-30-2017 3:24 PM

Lol Id

Nothing the God of biomechanics wouldn't let you in heaven for 

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