The Engineers, also known as Pilots (after the individual discovered on LV-426), Space Jockeys, Ossians or Mala’kak, are an ancient extraterrestrial species of unknown origin. They possess some of the most advanced technology in the entire galaxy, with special emphasis placed on their skills in Genetic Engineering. Credited with the creation of mankind, Engineers are believed to have been beneficent Creators of sorts who sailed the stars terraforming primordial celestial bodies and seeding them with the foundations of biological life. As such, they are revered by some as gods by the species they created.
The Engineers are extremely pale-white, hairless and humanoid due to their subterranean nature, with two arms and legs, and said to have staring, “dead seeming” eyes. The veins underneath their skin are visible, and their pupils are in the shape of oblong plus-symbols.
The Engineers are 9-10 feet tall and breathe oxygen just like human beings. They also seem to be extremely strong and resilient given to the fact that the Last Engineer killed Peter Weyland’s escorts by sending them flying across the room from simple punches and was impervious to gunshot damage at close range. However, this Engineer was outfitted with a biomechanical pressure suit that probably also increased its strength and durability by working as a biotechnological power suit. In Predator: Fire and Stone, a physical fight between an experienced Predator and an Engineer shows the latter to be far stronger with it dominating the fight, shrugging off a plasma bolt and heavily wounding the predator, causing it to rely on its stealth tactics, equipment and the aid of a human to defeat the Engineer.
The Engineers from Planet 4 as seen in Alien: Covenant, however, appeared more primitive and slightly different in appearance from those the crew of the USCSS Prometheus encountered on LV-223, having eyes more identical to humans and far more variance in body shape and appear to be less tall compared to the muscular physique and height of those in Prometheus, but the clothes they wore were the same as the sacrificial Engineer’s from Prometheus. Engineers have a lifespan of around 150 years.