Alien (Fallout 3)

Aliens are extraterrestrials living aboard Mothership Zeta in 2277.

Background
Although "aliens" is a general term, these particular aliens are the stereotypical "little green men" depicted in 1950's retro-futuristic renditions. They are an eerie green color, have an irregular shaped head, and stand roughly 4-5 feet tall. Their fingers are spongy digits with suction cup tips... which make it easier to snatch humans for twisted experiments.

The aliens are far more advanced than humans and have seemingly been around since the beginning of time, seeing as you find a Japanese samurai, dating back to 650-800 AD, in cryo-sleep.

Biology
Like humans, they breathe in an atmosphere of oxygen, nitrogen and carbon dioxide.

Gameplay attributes
Most aliens encountered are either hostiles or workers. Hostile aliens sometimes have shields which boost their damage resistance significantly. In combat they tend to hang back or rush the player if they are using melee weapons.

Alien
Regular aliens are the most common extraterrestrial you will see aboard Mothership Zeta. They act as the standard enemy of the area and will always be hostile towards you. Aliens have many tiers, depending on the players level. Tiers 1-3 do not have an inertia suppression field and the aliens tier 4-6 do. You can tell an alien has on an I.S.F. because their bodies will shimmer and become slightly distorted.

† The inertia suppression fields protection depends on the level of alien using it.

Alien worker
Alien workers are the working force of the Mothership. Although displayed as hostile, they will never attack the player, instead fleeing or cowering in fear. Killing one results in minor karma loss although this may not be the case if you are not directly involved such as overloading the assembly when they are near it. During the quest Not of This World, when you first spot them, Sally will tell you not to hurt them because they are harmless.

Alien captain
The Alien Captain is the leader of the Alien forces on Mothership Zeta, equipped with a modified Alien Blaster and a shiny grey space suit. Despite being the leader of the Aliens, his stats are the same as the lowest-ranking Alien enemies in the game, and his weakness in combat is compounded by his lack of an Inertia Suppression Field. As the ship's Captain he has remote access to the Mothership's shield and death ray power systems, and a big button in front of him, which can fire the death ray.

Appearances
Aliens appear in Fallout 3.