Fallout 3 creatures

This is a list of all creatures which appear in Fallout 3.

All Fallout 3 creatures when in proximity of others will fight each other, so long as they are not in the same faction as grouped below. (For example, Deathclaws will attack Mirelurks, while Feral Ghouls will not attack Glowing Ones.) The exception to this is that Humans are always willing to fight Ghouls and vice versa.

Humanoid

 * Aliens (Mothership Zeta): Abomination, Alien, Alien Captain, Alien Worker
 * Human: Enclave, Outcast, Brotherhood of Steel, Raider, Talon Company, Wastelander, Wildmen (The Pitt), Regulators, Slavers, Hunters, Scavengers, Tribals (Point Lookout), Smuggler (Point lookout), Pitt Raider (The Pitt)
 * Ghouls (sentient): Ghoul, Chinese Remnant, Ghoul Guard (Broken Steel), Wastelander
 * Ghouls (feral): Feral Ghoul, Feral Ghoul Roamer, Glowing One, Feral Ghoul Reaver (Broken Steel), Swamp Ghoul (Point Lookout)
 * Trogs: Trog (The Pitt)
 * Swampfolk: (Point Lookout): Scrappers, Trackers, Creepers, Brawlers, Bruisers
 * Fat Asians

FEV Experiments

 * Super Mutants: Super Mutant, Super Mutant Brute, Super Mutant Master, Super Mutant Overlord (Broken Steel), Super Mutant Behemoth
 * Failed Experiments: Centaur
 * Intelligent: Fawkes, Harold, Uncle Leo

Non-Humanoid

 * Brahmin, Mad Brahmin
 * Mole Rat
 * Yao Guai
 * Dogs: Vicious Dog, Raider Guard Dog, Scavenger's Dog, Talon Company Guard Dog ,Dogmeat, Dogmeat's Pup (Broken Steel)

Reptiles

 * Deathclaw
 * Mirelurk King
 * Swamplurk Queen (Point Lookout)

Crustaceans

 * Mirelurks: Mirelurk, Mirelurk Hunter, NukaLurk, Swamplurk (Point Lookout)

Insects and arachnids

 * Fire ants: Fire Ant Worker, Fire Ant Soldier, Fire Ant Warrior, Fire Ant Nest Protector, Marigold Ant Queen
 * Giant ants: Giant Worker Ant, Giant Soldier Ant, Giant Ant Queen, Mutated Forager Ant
 * Bloatfly
 * Radroach
 * Radscorpion, Giant Radscorpion, Albino Radscorpion (Broken Steel)

Robots
Robots are not exactly creatures, but can be as much of a threat to your character (if not more, due to their ability to attack at range with powerful projectile weapons). It appears robots have a small weakness to energy weapons, and are rendered helpless by electro-magnetic pulses.
 * Alien Turret (Mothership Zeta)
 * Enclave Eyebot
 * Experimental Weapons Drone (Mothership Zeta)
 * Guardian Drone (Mothership Zeta)
 * Mister Gutsy
 * Mister Handy
 * Protectron
 * Sentry Bot
 * Support Drone (Mothership Zeta)
 * Automated Turrets: Mark I, Mark II, Mark III, Mark IV, Mark V, Mark VI, Mark VII, Mark VIII
 * Spider Drone (Operation Anchorage)
 * Chimera Tank (Operation Anchorage)

Androids

 * Harkness
 * Armitage

AI computers

 * President Eden
 * M.A.R.Go.T. (Broken Steel)
 * Chinese Soldier (Operation: Anchorage)

Cyborgs

 * Professor Calvert (Point Lookout)
 * Robobrain