Alien

Aliens are a type of creature.

List

 * In Fallout, the Vault Dweller can encounter a flying saucer with two alien skeletons.
 * In Fallout 2, the Chosen One can encounter two technologies based on alien technology, bio med gel and Skynet.
 * In Fallout 3, the Lone Wanderer can encounter a downed recon craft named Theta and a dead alien. In the Mothership Zeta add-on, the Lone Wanderer can be abducted by zetans at the alien crash site and taken aboard a spaceship named Mothership Zeta.
 * In Fallout: New Vegas, with the Wild Wasteland trait, the Courier can encounter an unnamed recon craft with two aliens and an alien captain nearby.
 * In Fallout 4, the Sole Survivor can encounter an alien spaceship falling from the sky shortly after reaching level 20. Companions have unique commentary upon observing the crash. The crashed UFO is always located east of Oberland station. Following green bloodstains will lead the Sole Survivor to a hostile injured alien which can be looted for the alien blaster pistol.
 * In the Creation Club quest Over the Moon, the Sole Survivor encounters a second alien craft abducting a brahmin, along with two hostile aliens with unique weapons.

Objects
Items and robots

Alien consumables Weapons

Alien weapons, 3 Technology

Alien technology, 3

Appearances
Aliens appear in Fallout, Fallout 3, Fallout: New Vegas, and Fallout 76. They are mentioned in Fallout 2.

Behind the scenes
According to Jeff Gardiner, aliens in Fallout 3 were modeled after the "Roswell grays."