The Protomorph, also called the Praetomorph, was the black egg-born creature David 8 finished on Planet 4 in Alien: Covenant. Production nicknamed the infant the Imp and the adult the Stalker. Fans settled on Protomorph, while art books, toy packaging, and the Alien RPG used Praetomorph, listed there as Plagiarus linesteres. Two adults appeared in the film, born from acting captain Christopher Oram and security chief Dan Lopé. It used eggs and Facehuggers, grew to adult size within hours, and sat on the same Xenomorph type line as XX121, after the pale Neomorph and before the hive animal of 2122.
Praetomorph vs. Protomorph
Praetomorph was the name used in official Covenant materials. Protomorph was the fan label that stuck because the adult looked like an early Xenomorph. The Alien RPG binomial Plagiarus linesteres put it on the same genus as the Neomorph's Plagiarus celerius, both tied to a mutagen close to the Black Goo Pathogen. That genus also pointed at Plagiarus praepotens from Alien: The Cold Forge, the Facehugger payload that rewrites a host into a chestburster, not a name for the adult itself.
Protomorph was also used loosely for other prequel creatures that were not this animal. The pale Deacon at the end of Prometheus shared unfinished organic traits with the Neomorph, not the black egg-born Stalker. Covenant's creature already used ovomorphs, Facehuggers, an inner jaw, and acid blood.
Protomorph Origins
Ten years after Prometheus, David remained in the Engineer city on Planet 4 with a crashed juggernaut and the body of Elizabeth Shaw. The pathogen had killed the local fauna. He spent that decade dissecting an Engineer, mounting hybrids, and cross-breeding what the planet and the ship still offered. In the lab he showed Oram a preserved leathery egg, opened it, and said he had found that specimen as Engineer work rather than making it himself. He also said he lacked thousands of years of Engineer practice and had only his programming plus ten years of trials.
Ridley Scott said David was the father of the Xenomorph line. The film treated the live eggs under the cathedral as David's experiments. David told Oram those ovoids were the end of the work because he had run out of animal subjects. The USCSS Covenant landing party gave him hosts again. The first successful birth was Oram.
Protomorph Egg
The ovomorphs stood upright in a windowless cellar under the laboratory, spaced on a wet floor with condensation on the walls. Vapor in that room smelled like ammonia. Compared with later hive eggs they were more bulb-shaped, with larger petals that folded back and dripped mucus. David had at least half a dozen of varying sizes. He told Oram they were alive and waiting for Mother.
Before they went down, David smeared ointment on Oram. The ointment blocked the smell and hid a living host from the eggs, which let David lean over an open ovoid unharmed. Oram stayed safe until he stepped too close. There was no Queen on Planet 4. The film later showed David storing two small eggs among the Covenant's human embryos. The novelization put three tiny eggs in that drawer, already pulsing under a fingertip.
Protomorph Facehugger
Under a thin membrane the Facehugger waited until a host leaned in. The egg nearest Oram opened and the creature attached at once, tail around his neck and ovipositor down his throat. Oram fired one carbine shot into the ceiling. David told the captain he was relieved of duty.
Private Cole later found that egg empty and Oram already burst. A second Facehugger attacked Cole, then Lopé. Cole stabbed it and shot it apart, but acid burned Lopé's cheek and seconds of contact were enough. The attempted Facehugger removal failed. Lopé carried the embryo onto the USCSS Covenant.
Protomorph Chestburster
Production called this stage the Imp. After the spent Facehugger fell away, Oram woke groggy and said he had dreamed of meeting the Lord. His chest then burst. The birth was more explosive than David expected from a human body, and smaller than an Engineer. Blood hit David's clothes and face.
The Chestburster was already changing before it left the corpse, with arms, legs, and a hammerhead skull unfolding while it was still wet. Skin at this stage was semi-translucent and purplish. It did not flee. It studied David, copied his raised arms, then failed to copy a few whistled notes because the lungs were built differently. David treated that attempt as proof the animal answered to him.
Protomorph Adult
The adult, the Stalker, stood more than 2.5 meters. The body was muscular and organic rather than fully biomechanical, black and gray, with vessels showing through the skin and an elongated skull without a smooth dome. It already had the inner jaw. That second mouth killed Cole in the cellar, punching through the skull hard enough that blood and brain hit Lopé. Growth from Imp to that size took hours, faster than a classic hive birth.
Oram's animal reached the Engineer staircase as Tennessee brought the cargo lift down. It boarded the platform and died when Daniels swung the unlocked crane and the jaws closed on it. Lopé's animal erupted later in the Covenant medbay, still on nutrient tubes, then killed Ricks and Upworth in the showers and was diced in the terraforming bay. Both deaths threw a heavy acid spray across metal and deck.
Protomorph Queen
David never treated the Stalker as the finished organism. In the canon short Advent he told Weyland-Yutani that Planet 4 had left him short of hosts, which slowed the work, and that years of trials including Shaw's corpse had produced his "wolf," a violent prototype. Cathedral drawings already showed Shaw with tubes and clawed fingers. He kept her alive for a long stretch after the crash, then used the body as his best available subject.
Control of the Covenant gave him the missing stock: thousands of sleeping colonists plus the embryo drawers. In Advent he named Daniels as the next step, a Queen he said would change everything. No Protomorph Queen appeared on screen. The eggs he stored next to the human embryos were the unresolved thread.
Protomorph Characteristics
The Stalker hunted as a lone predator, not a hive drone collecting hosts. It killed Cole on the spot instead of carrying him back to the eggs a few rooms away. It chased Lopé through the lower corridors, then Daniels across the plaza and the lift, then the surviving crew through the Covenant. It relied on strength and speed. It did not cocoon people for a Queen that did not exist yet.
Synthetics were the gap. David stood over the newborn Imp and later walked the cathedral without being treated as prey. Walter could fire on the adult and still not be treated as prey, the same android blind spot that let Ash stand over a Facehugger. The animal still felt bullets. In the novelization, repeated hits from Walter put it down on the plaza, then it rose and kept coming.
Protomorph Vision
Alien: Covenant used a point-of-view shot of Xenomorph vision from Lopé's Protomorph aboard the ship. The skull had no eyes. The shot used a fisheye lens and a veined membrane that pulsed as the creature moved. Color in that membrane followed the ship's alert lighting. Compared with the runner point-of-view in Alien 3, the Covenant version was thicker and more interior. Alien: Romulus later showed the eyeless skull again under a translucent dome, in the 1979 style, without a matching point-of-view shot.
Protomorph vs. Neomorph
A Neomorph was mote-born, pale, and unfinished, with a split jaw and no second mouth. A Protomorph was egg-born, black, and already carried the inner jaw, acid, and ovomorph cycle. David calmed a Neomorph with breath in a corridor. Oram then emptied a carbine into that animal in the cathedral, which killed the last field specimen on screen. The Protomorph did not calm for David in the same way. It copied him as a newborn, then hunted everyone else.
Covenant originally planned a fight during the escape from the city. In the novelization the leftover white runner from the wheat leaped at Daniels and Lopé in the plaza, the black adult came down the Engineer stairs, they grappled, and the Protomorph disemboweled the Neomorph before turning on the sergeant. That sequence was cut, so the film never showed the two adults on screen together.
Protomorph vs. Xenomorph
Next to a Warrior from Aliens, the Stalker looked skinned: more muscle and vessel, less pipes and plating. The life cycle had the same shape, compressed. Oram went from hugger to burst in the time it took Daniels to miss him and start a search. Lopé lasted longer only because the medbay coma hid the growth. There was no Queen directing captures, and no hive resin on Planet 4 or on the ship.
The inner jaw, acid blood, and eyeless head were already there. What was missing was the later caste work and the biomechanical shell H.R. Giger locked in for the Nostromo animal. NECA still shipped the Covenant adult as "Xenomorph," which matched how close the silhouette already was. Scott wanted Covenant to return to that silhouette after the pale runners, with David as the engineer who got it onto a colony ship.
"Praetomorph" Behind The Scenes
The adult was built to read as an écorché figure, a flayed anatomical model, rather than a fully plated machine. Motion came from a praying mantis and a baboon: long limbs, sudden shifts of weight, a head that tracked without eyes. Spanish actor Javier Botet, whose Marfan syndrome gave him unusual reach and joint range, did the motion-capture performance. Goran D. Kleut wore the practical adult for shots that needed a body on set.
Creature work sat with the same Odd Studio and Creatures Inc. shops that handled the Neomorph, working together as Odd Creatures. Digital shots covered the chestburst, the lift climb, the vacuum jump, and any run the suit could not hold. Scott's brief was a return to the familiar Alien after the white runners, still unfinished enough that David had a next step left.
Protomorph Figures
NECA shipped the 7-inch Alien: Covenant adult in July 2017 under the name Xenomorph, not Protomorph or Praetomorph. The same wave included the Creature Pack: two Facehuggers, one open egg, one closed egg, a poseable toddler Neomorph, and a Chestburster, all scaled to the 7-inch line. Funko also labeled its Covenant POP a Xenomorph. That sculpt added blue veins across the body to separate it from the usual black POP Aliens.
Tabletop stats appeared in the Alien RPG as Plagiarus linesteres. The creature rarely appeared under either fan name in games. Most later titles went back to hive Xenomorphs and left David's prototype on Planet 4 and the Covenant.
Conclusion
The Protomorph was David's egg-born prototype from Covenant: ointment-masked ovomorphs under the cathedral, an Imp that copied a raised arm, two Stalkers diced by ship's machinery, and a planned Queen that never reached the screen. He left the remaining eggs in the embryo drawers and took the colonists onward, a thread Prometheus 3 was meant to pick up and did not.
Appearances
- Alien: Covenant (2017)
- Alien: Covenant novelization by Alan Dean Foster (2017)
- Alien: Covenant - Advent (2017)
Tag Categories: Xenomorph Appearance | Xenomorphs From The Movies | Pathogen Creatures | Alien Lore
