Space Jockey (Earth-7149)

"Alien life form. Looks like it's been dead a long time. Fossilized. Looks like it's growing out of the chair. Bones are bent outward, like he exploded from inside."

- - Arthur Dallas

The "Space Jockey", was a colossal individual of unknown species who piloted the ship that crash-landed on Acheron. It carried multiple Ovomorphs aboard its ship for reasons unknown, and was apparently killed by a Chestburster. Its body was later discovered by the crew of the human ship USCSS Nostromo.

Early life
The Space Jockey was the pilot of a ship on the moon LV-423. Its ship carried xenomorph Ovomorphs for unknown reasons. The Jockey died after being apparently impregnated by a Facehugger, but not before sending a warning message for any sapient explorator to not approach the ship.

It is unknown if the Jockey was the only crew member of the ship, but upon its discovery by human explorers thousands of years in the future, it was theorized by one of them, Thomas Kane, that the openings of the ship were airlocks which would potentially being left open to allow other crew members to escape.

Discovery
The fossilized remains of the Traveler were found thousands of years later by the crew of the human freighters USCSS Nostromo and Anesidora, in 2552 and 2564, both of which were lured into lv-423 by the beacon the Space Jockey sent to keep them away. The crew of the Anesidora was able to shut the beacon.

Samples of the Jockey's blood were later taken by the Weyland-Yutani Corporation to be studied alongside the Ovomorphs at the Origin Facility, on Hadley's Hope, Aegis VII, where it underwent extensive research.