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Engineers

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The Engineers are one of the most mysterious and poignant aliens in the Alien franchise. They were an ancient and highly intelligent species, responsible for creating the substance that spawned not only the beginnings of the Xenomorph species but the human race, as well.

Check out the new IGN World Guide for FX's Alien: Earth , premiering this summer!

Prometheus: Cast of Characters

Engineer Overview

The Engineers are an ancient alien race with extremely advanced technology, high levels of intelligence, and a serious God complex. They were very tall, verging on giant, with light blue skin, pitch black eyes, and no hair. The Engineers fancied themselves creators, both creating and destroying life. They do this with a substance called Black Goo.

Black Goo is a thick, sticky, tar-like substance that is capable of mutating the genetic code of any life form it makes contact with. The results of the Black Goo mutagen are unpredictable, more often than not creating aggressive and horrifying mutations rather than any stable or meaningful life.

That is because the Black Goo is not just used to create life. It is also a biological weapon used to eradicate species. The only meaningful example of the Black Goo creating life rather than spawning abominations is at the beginning of 2012's Prometheus.

At the beginning of Prometheus, we see an Engineer consume the Black Goo, which begins to break down its body. The Engineer then falls into a river, dispersing its genetic code throughout the water source. According to the DNA comparison Dr. Elizabeth Shaw draws from the Engineer specimen they recovered, our DNA matches theirs, confirming that this is what planted the seeds for life on Earth and, as a result, the human race.

It is later revealed that the Engineers regretted their decision, seeing the human race as a failure and beginning the process of eradicating the species using the same Black Goo mutagen. Unfortunately for them, the Engineer's experiments got out of hand, and the Black Goo they created proceeded to wipe out almost their entire colony instead of the humans on Earth. Jars of Black Goo still remain in the Engineer's complex, however, waiting to fall into the wrong hands.

The Engineers, although only revealed in Prometheus, actually made their debut in the first Alien movie. The Pilot, or Space Jockey, is the name affectionately given to the fossilized alien found in the derelict spaceship in the 1979 Alien movie. The crew of the USCSS Nostromo does question what it might be, but that question remained unanswered until Prometheus was released in 2012.

For more of the lore, here's our Prometheus Ending Explained.

As the Engineers were the leading figures behind humanity all along, it is fitting that they were present at the very beginning of the franchise. The identity and importance of the Engineer remaining hidden for over a decade to viewers directly parallels the human's delayed discovery that the Engineers were, in fact, their creators.

Alien: Cast of Characters

Engineer Origins

The origin of the Engineers can be traced back to one of their home planets, called Planet 4. Areas like the massive bio-weapons compound/ship from Prometheus were on disposable planets in case the Black Goo experiments became uncontrolled. So it's safe to say that the moon they landed on in Prometheus was not the Engineer's home world but merely a safe location to create biological weapons.

At the end of Prometheus, however, Dr. Shaw changes their destination, requesting that David, a Synthetic, take her to the place the Engineers "came from" instead of going to Origae 6 like was originally planned. David then takes her to Planet 4. We can infer from that that Planet 4 must then be the Engineer’s home planet, at least to the best of David’s knowledge.

At the time when David and Shaw arrived on Planet 4, it appeared to be brimming with life, with a large temple complex and families of Engineers crowding around the bottom of the ship, waiting to welcome back their own. Sadly, the Engineer they were expecting was not in control of the ship. David was. And he dropped the Engineer ship's load of Black Goo on the inhabitants of Planet 4, wiping them out.

By the time David was done with Planet 4, it had become a desolate landscape ridden with Black Goo spores and devoid of any life besides botanical. That is the same planet the team from 2017's Alien: Covenant set foot on in search of a habitable place to settle with their colonists.

Alien: Covenant Cast of Characters

Engineer Appearances

The Engineers appear in several pieces of Alien media, covering all bases, including movies, games, and books. They are, however, strictly confined to the Alien universe and are not present in any AvP media except the four-issue crossover comic runs of Fire and Stone in 2014 and Life and Deathin 2016.

Movies

  • Prometheus (2012)
  • Alien: Covenant (2017)
  • Alien (1979)

Games

  • Alien: Isolation (2014)
  • Aliens: Fireteam Elite (2021)

Comics & Novels

  • Prometheus: Fire and Stone
  • Prometheus: Life and Death
  • Prometheus: Life and Death—Final Conflict
  • Aliens: Apocalypse - The Destroying Angels
  • Aliens Omnibus

AI Characters (Synthetics) in the Alien Movie Franchise

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Alien: Earth Hulu
Initial Release: Aug 12, 2025
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