Uploaded June 2024 | Updated September 2026, 2 weeks ago
The Xenomorph species from Alien Romulus , also referred to as Xenomorph XX-121, or simply, Aliens, are a creature known for gestating inside of a living host, and which, once emerged from their living incubator, grow at an exponential rate, reaching their full adult size in a matter of hours, or even minutes. And then possess a seemingly endless supply of energy.
But how does their metabolism support this? Do they have a food source to fuel it?
Do Xenomorphs eat; and if so, what do they eat?
So, if we begin towards the beginning of the Xenomorphs lifecycle, once an embryo has been deposited inside it’s host organism, the Chestburster stage is known to absorb the host’s biomass and nutrients in order to grow itself, in essence “feeding” on them. This is why once they regain consciousness from their comatose state, the host will display extreme hunger and lack of energy, often feeling physically unwell and drained.
But what about the adult Alien.
How are they able to possess a seemingly unlimited stamina, and attack with the ferocity they are known for, how do they secrete as much saliva as they do, and produce the hive resin we see lining the surfaces of their territory. The required energy must be made by their bodies somehow by converting mass.
Well, there are a few opposing theories on how the Xenomorph gets its energy source.
Some say that a Xenomorph doesn’t actually physically eat at all, but rather, they absorb it from the surrounding area through the dorsal tubes, similarly to how plants use photosynthesis to absorb sunlight.
Another is that their acidic blood provides them their energy, generating a powerful bio-electric charge by means of chemical reaction, replacing the need for traditional respiration and digestion of food altogether. This would help to explain how the creature is able to survive in the vacuum of space, and also helps to explain how the Ovomorph stage is seemingly able to remain dormant for vastly extended periods of time. However, the means by which the creatures may "recharge" this battery remains a mystery. It is quite possible it simply cannot be renewed, and that Xenomorphs will eventually die naturally as a result of this energy source depleting.
The alternative is it finding and consuming food, like a regular animal. If this is the case, being a biomechanical creature, it is possible it eats both organic and mineral content.
The main evidence to support the Xenomorph eating is in the movie Alien 3, in one scene, the Runner Alien can be seen to be possibly eating a dead human.
Also, in the movie AVP Requiem, during the part at the swimming pool, one Xenomorph, after killing someone, repeatedly bites the deceased body with its inner jaw, before itself being killed by the Wolf Predator. If we look at the screenplay for AVPR, it is instead, Dale, who is killed by the Xenomorph in the swimming pool rather than one of his goons; in this early version of the film, it reads:
#alienromulus
This article uses material from the Xenopedia wiki at Fandom and is licensed under the Creative Commons Attribution-Share Alike License.
The Xenomorph species from Alien Romulus , also referred to as Xenomorph XX-121, or simply, Aliens, are a creature known for gestating inside of a living host, and which, once emerged from their living incubator, grow at an exponential rate, reaching their full adult size in a matter of hours, or even minutes. And then possess a seemingly endless supply of energy.
But how does their metabolism support this? Do they have a food source to fuel it?
Do Xenomorphs eat; and if so, what do they eat?
So, if we begin towards the beginning of the Xenomorphs lifecycle, once an embryo has been deposited inside it’s host organism, the Chestburster stage is known to absorb the host’s biomass and nutrients in order to grow itself, in essence “feeding” on them. This is why once they regain consciousness from their comatose state, the host will display extreme hunger and lack of energy, often feeling physically unwell and drained.
But what about the adult Alien.
How are they able to possess a seemingly unlimited stamina, and attack with the ferocity they are known for, how do they secrete as much saliva as they do, and produce the hive resin we see lining the surfaces of their territory. The required energy must be made by their bodies somehow by converting mass.
Well, there are a few opposing theories on how the Xenomorph gets its energy source.
Some say that a Xenomorph doesn’t actually physically eat at all, but rather, they absorb it from the surrounding area through the dorsal tubes, similarly to how plants use photosynthesis to absorb sunlight.
Another is that their acidic blood provides them their energy, generating a powerful bio-electric charge by means of chemical reaction, replacing the need for traditional respiration and digestion of food altogether. This would help to explain how the creature is able to survive in the vacuum of space, and also helps to explain how the Ovomorph stage is seemingly able to remain dormant for vastly extended periods of time. However, the means by which the creatures may "recharge" this battery remains a mystery. It is quite possible it simply cannot be renewed, and that Xenomorphs will eventually die naturally as a result of this energy source depleting.
The alternative is it finding and consuming food, like a regular animal. If this is the case, being a biomechanical creature, it is possible it eats both organic and mineral content.
The main evidence to support the Xenomorph eating is in the movie Alien 3, in one scene, the Runner Alien can be seen to be possibly eating a dead human.
Also, in the movie AVP Requiem, during the part at the swimming pool, one Xenomorph, after killing someone, repeatedly bites the deceased body with its inner jaw, before itself being killed by the Wolf Predator. If we look at the screenplay for AVPR, it is instead, Dale, who is killed by the Xenomorph in the swimming pool rather than one of his goons; in this early version of the film, it reads:
#alienromulus
This article uses material from the Xenopedia wiki at Fandom and is licensed under the Creative Commons Attribution-Share Alike License.
