Etymology of pure and prime humans

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I will conquer it and turn all those pure strain humans into mutants. They will give me the army I need to bring peace to the entire wasteland.

— The Master

The terminology behind those regarded to as pure humans first originated from the Master in the original Fallout and has seen use throughout most future Fallout titles as well. Being used in a broader sense to term those humans with a low, to relatively radiation-free state, being a pure human is more properly attributed to those whom are affected by the FEV in the way intended from before the Great War.[1] Should a human undergo a unique mutation such as the Master or Lieutenant, or if one undergoes proper evolutionary stages into a super mutant by exhibiting an expanded intelligence, as well as strength and size, determines whether a human is truly pure or not.[2] However, while being termed a pure human is indeed a distinguishable trait from other normal or sub-normal humans, being a pure human does not exhibit signs of being an entirely different species, nor does it mandate being a superior or inferior race. This is seen by pure humans and normal humans being allowed to breed, as well as it being nearly impossible to tell the difference between being a normal and pure human outside of FEV research and experimentation.

Pure human etymologyEdit

Before the Great WarEdit

This section is transcluded from Forced Evolutionary Virus. To change it, please edit the transcluded page.

During West Tek's testing phase of the PVP in 2075, abnormal side effects were observed developing in the test subjects. The test animals began to grow dramatically larger in size and muscular structure, and their brain activity increased. Seeing the potential military applications of these unexpected results, the U.S. Army sent its own military scientists into the facility to secure the project and renamed the PVP virus as the Forced Evolutionary Virus (FEV). Not content with producing mere immunity to disease, the Army's researchers hoped that the FEV would turn its soldiers into abnormally strong and intelligent supermen capable of defeating many times their own number of Chinese soldiers. When the testing on animals reached its logical conclusion, the American military moved the entire apparatus of FEV research to the Mariposa Military Base in California, where secret human testing on military prison inmates proceeded.


After an expedition gone wrong while searching for the source of hostile mutants attacking nearby settlements, a man by the name of Richard Grey found himself stuck in one of the FEV vats for an extended amount of time after the others in his group with the exception of Harold were killed, and due to his being born in a vault and being relatively radiation-free, Grey underwent the most unique of FEV mutations, turning into the antagonist of the Vault Dweller most popularly known and referred to as "the Master".[3] As the Master began experimenting with FEV and using other humans to expand his biomass, the Master soon came to the conclusion that FEV could be used to evolve and unify humanity in order to save themselves. However, the Master hit an obstacle in that most humans were coming out as either dead or mentally handicapped super mutants that were of little use to his vision.

But then, the Master came across another pure human, which after absorbing into himself, made him realize that humans with little or no radiation conformed better to the effects of FEV. After biologically linking himself[4] to the Mariposa Military Base's super computer detailing FEV, this fact was confirmed and the Master began looking for sanctuaries of still pure humans. This proved to be fruitful in his endeavors, as those that were pure humans began making up the backbone of the Master's Unity, such as Lieutenant and the nightkin.[5]

Fallout 2Edit

After the defeat of the Master, pure humans once again became a meaningless label, and was largely forgotten, even by the super mutants that had survived their annihilation after the destruction of the Cathedral. But after the events leading up to the Chosen One leaving Arroyo, a secretive political and military organization known as the Enclave began expanding their influence across New California, and were seen experimenting upon the effects of FEV, as well as the pure humans needed to research the pre-War virus.[6][7]

Attempting and ultimately succeeding in the creation of an airborne strain of FEV that would wipe the world clean of most, if not all life, as a way for the Enclave to then take over and re-build America, pure humans were needed as test subjects to create the modified FEV, as well as being needed to inoculate the Enclave from this new strain that would kill even them if exposed to Curling's virus.[8] These experiments also led to another pure human by the name of Frank Horrigan undergoing unique mutations due to FEV compatibility.[9]

Fallout 3Edit

While FEV played a lesser role in Fallout 3, pure humans are still referenced and play an integral part in the main quest-line. While most humans in the Capital Wasteland are too damaged by radiation to create anything but the dumbest variety of super mutants, President John Henry Eden was able to create an even further modified strain of FEV based off of Curling's research. [citation needed] This version of the virus was modified to kill any human with more than the most minor of radiation exposure, while keeping pure humans alive. If introduced into the Potomac River, the virus is seen living up to its purpose, killing any normal humans or mutants that drink the water.

With The Pitt, the baby Marie is shown to be a pure human and is entirely immune to any forms of radiation exposure. Whether this makes her immune to diseases or other forms of mutations is currently unknown. However, it is discovered later when determining her fate that her gift of radiation immunity can be passed on through others in the form of a booster shot.

Fallout 4Edit

The Sole Survivor is a Prime Normal, and it is occasionally brought up in the story, such as when they enter Vault 81, with the doctor who screened them remarking how little radiation they have. When creating their first synths, The institute was unable to create synths more advanced then generation two, which is largely mechanical in nature, as they needed "undamaged" Human DNA- DNA only obtainable from a Pure Human. Regardless of the secure and sanitary conditions the institute managed to achieve, the DNA the institute scientists had was nevertheless impure. In order to get the DNA, the Institute infiltrated Vault 111 in 2227 and opened all the cryostasis pods via manual override, taking Shaun, the sole survivors infant son, and leaving the sole survivor as a backup. the rest of the vault dwellers were killed off slowly due to life support failure caused by the override as the years went on, leaving only Shaun and the sole survivor alive by 2287.

Fallout: TacticsEdit

Mini-FOT LogoThe following is based on Fallout Tactics and some details might contradict canon.

Pure humans are mentioned briefly on a console in Buena Vista, detailing the possibility of setting the Calculator's parameters to target mutants while leaving pure humans alone, which would help ensure the survival of the human species.[10]

Mini-FOT LogoEnd of information based on Fallout Tactics.

Fallout: Brotherhood of SteelEdit

FOBoSLogoThe following is based on Fallout: Brotherhood of Steel and has not been confirmed by canon sources.

A pure human turned super mutant by the name of Attis [11] began further experimentation into FEV after the death of the Master, and discovered the Secret Vault, which held a unique variation of FEV that further evolved super mutants. For most super mutants, this included rapid cell regeneration and increased mass. But for pure humans turned into super mutants such as Attis, this variant of FEV resulted in multi-cellular beings of surprising mental capacity and aggression.

FOBoSLogoEnd of information based on Fallout: Brotherhood of Steel.

Fallout (film)Edit

FilmThe following is based on the canceled Fallout movie and has not been confirmed by canon sources.

Pure, or pristine humans, are referenced at multiple times throughout the Fallout film treatment. The first time is in Dekker's club when, in innuendo form, the film treatment describes how semi-mutated women want to get their hands on the protagonist's 'pristine bodily fluids'.[12]

Most importantly, the Master had been testing genetic combinations for years, but all his previous attempts had resulted in sterile mutants. He believes that the protagonist, preliminarily named Hero, and his female companion represent his last chance to create fertile mutants, unless he can capture the people of Vault 13.[13] This all stems from the perceived purity of Vault Dwellers, though this is not expanded on in the same way as in the games.

FilmEnd of information based on the canceled Fallout movie.

Prime normalsEdit

The Lou Tenant, while also seen using the pure human term, was more partial to using the "prime normal" label instead. This different terminology reflected the Lou Tenant's personal theory [14] that while radiation might have been a small factor in successful FEV evolution, that the real culprit behind lesser evolutions stemmed from the FEV vats leaking after the Chinese nuclear bombs hit the original West Tek research facility, which resulted in the region known as the Glow. The impact of the nuclear shock-waves cracked open a few nutrient solution tanks filled with FEV, with the subsequent radiation mutating the FEV into an airborne strain of the original virus, with the new airborne strain of the FEV inoculating any person infected with it against the original, mutational strain of the FEV, acting as a form of vaccine and giving exposed creatures some limited resistance to the FEV's mutational effects. As a result, the ideal subject for FEV mutation was someone who had not been exposed to the airborne form of the FEV following the Great War.[15] However, this theory has not been proven, and is directly contradicted by the Master's research notes, as well as by Joshua Sawyer.[16]

Unique mutations due to FEVEdit


Fallout 2Edit

Fallout: New VegasEdit

Fallout: TacticsEdit

Fallout: Brotherhood of SteelEdit

Canonical pure humansEdit


See alsoEdit


  1. FEV research
  2. FEV experiment disk
  3. Richard Grey's audio diary
  4. Alpha experiment disk
  6. FEV Curling-13
  7. Fallout 2 Official Strategies & Secrets p.36: Strangers "Some characters were once human, but have been changed into something else in the years since the bombs scorched the land. Both Ghouls and Super-Mutants were changed by man—one accidentally, one intentionally."
  9. Mariposa Military Base excavation
  10. Buena Vista terminal entries
  11. Attis
  12. Fallout film treatment, bullet-point #29
  13. Fallout film treatment, bullet-point #34
  14. LT.MSG
  15. Forced Evolutionary Virus
  16. Mutations and their causes

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