Mutant

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"Beware the alien, the mutant, the heretic."

– Thought for the Day

A mutant is a creature with a genetic mutation that makes it differ noticeably from the majority of the species.

When Earth-creatures reproduce, their cells reproduce and have to copy their DNA. Reproduction is imperfect, so there are many error-detecting and error-correcting mechanisms to increase reliability. Of course, those mechanisms are themselves imperfect, so in any given copy operation, something like one in every hundred-million base-pairs is copied incorrectly; additionally, environmental conditions, like exposure to radiation, certain chemicals (called mutagens), or certain viruses, can introduce errors into a cell's chromosome. These changes are mutations, and are basically the typos of the genetic world. Of course, even when you get one, that's still just one cell; if the mutation occurs in a mutlicellular organism, then it usually won't actually be expressed unless it occurs very early in the organism's prenatal development (like, when it's still a clump of cells you can count on one hand, or even still a gamete in it's parent's junk).

In the real world, mutations are usually of limited effect. At best, a single mutation might improve the efficiency of some metabolic pathway; most will have no or minimal effect; and at worst, a mutation can cause cancer or other genetic diseases. Over many generations, a species can change quite dramatically, depending on what selective pressures they face in their environment, and what effect mutations have on their bearers' ability to reproduce; this is the process of evolution. That said, the effects are usually not perceptible on the human time-scale, unless you go to a species like bacterias or viruses that move though few thousands or even billions of generations per year (as opposed to human 0.05 per year), or Cephalopods which evolve via RNA editing, which can sometimes evolve without needing natural selection.

In fiction, mutations have much more extreme effects, like granting superpowers. This is especially the case in the world of comics and cartoons, as exemplified by groups such as the X-Men: an unknown-to-modern-science "X-gene" (or similar in-universe term) is somehow activated (usually during puberty, but sometimes during a suitably traumatic origin event, or from birth) and grants the bearer superhuman abilities, and occasionally a dramatically changed (though not necessarily hideous -- but some are disgustingly ugly freaks) appearance, due to the implications of such genes, mutants are classified as a separate sub-species of humanity despite the fact that it essentially rapes basic biology up the ass and gives evolution the middle finger, alas this is what most would call as comic bullshitium. Marvel Comics specifically designates mutants as people who bear their mutation from birth (though, as mentioned, it may not express itself until later), distinguished from "mutates," who are genetically altered later.

On the other hand, in grimdark works, mutants are generally depicted as beast-like, malformed, monstrous, and otherwise sub-human creatures. They are often enemies to be destroyed without feeling guilty, or occasionally wretches to be pitied, especially if they started out "normal."

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Warhammer 40,000Edit

Mutant Rabbles. No, there is no such thing as too many mutations.

The Imperium of Man's thoughts on mutants can be summarized by the page quote: "Beware the alien, the heretic, and the mutant." Or the much shorter quote “Kill the Mutant” which is a bit more accurate. After all, mutation of the body from the Holy Human Form is a sure sign of Chaos taint, and for that matter reflects poorly on the parents of the mutant in question, for surely the child would not be mutated if the parents were truly faithful to the Emperor!

That said, some mutants are tolerated in the Imperium, because they are necessary and/or relatively stable. This includes Navigators, who are necessary for Warp travel, psykers, who are important for astropathic communication, powering the Astronomican, and feeding the Emperor, and the various strains of abhumans, who are stable and useful.

On the opposite end of the spectrum, followers of Chaos treat mutants very highly, as they are considered favored by the Chaos Gods. Tzeentch in particular doles out mutations like there's no tomorrow (and knowing 40k, there legitimately may not be), giving his followers extra eyes, arms, legs, and even heads.

It's noted in the fluff that the reality is that most mutants are actually the result of legitimate flaws in the human genome, thanks to countless centuries of pollution, radiation, and bio-warfare; in Imperial space mutants caused by worship of the chaos gods make up a distinct minority in comparison. However, the Imperium treats all mutants the same, with a "better safe than sorry" mindset, and it's made pretty clear that this is actually why regular mutants are so eager to throw in with the forces of Chaos if given the chance.

An exception is found by Eisenhorn when he tracks a REDACTED TO PREVENT SPOILERS to the agri-world of Eechan; the world has a large lower-caste population of mutants who work the farms and crop-mills. These mutants are tolerated because purging them would mean the loss of food supply to many systems until the world can be repopulated, and it is possible they are mutant because of a factor caused by living on Eechan itself.

However, the state on which mutation becomes a crime varies between worlds. Usually, minor mutations such as bizarre skin color or an extra finger or toe is often brushed off or easily fixed via surgery and considered radiation caused or simply mundane birth defects. Major mutations such as an extra set of eyes or reptilian or slimy skin would be more likely to be looked into by either the Arbites or the Inquisition as the chance of these being related to Chaos is unsurprisingly quite high. Because of this, some of these mutants often flee into the deepest pits in Hive Worlds or escape and hide within the vastness of space. Usually these mutants find companionship and trust in the Lost and the Damned whom use them as specialized shock troops due to the fact that no two mutants are the same and have differing qualities and quirks that can prove advantageous in battle. These rag-tag teams of mutants are called mutant rabbles and are often undisciplined and rowdy.

There are a few instances of mutation where the subject actually turns out to be physically wholesome to the point of unnatural beauty, this may come together with psyker powers, think something akin to Sanguinius, either if this is the result of the current biological threshold the human race is going through or some artificial or warp-based agent may depend on an individual basis.

Usually the laws of Imperial worlds normally forbid such creatures from possessing armaments; those weapons that mutants do possess are usually limited to crude homemade firearms, chains, whips and clubs which can be easily made and concealed.

Forces of the Lost and the Damned
Command: Apostate Cardinal - Chaos Champion - Renegade Command Squad
Renegade Demagogue - Renegade Enforcer - Rogue Psyker
Human Troops: Cultist - Disciple Squad - Pontifex Guard - Renegade Infantry Platoon
Renegade Marauder Squad - Renegade Support Squad - Negavolt Cultist
Abhumans
& Beasts:
Beastmen Attack Squad (Khorngors - Pestigors - Slaangors - Tzaangors)
Chaos Beast - Chaos Hound - Chaos Spawn - Mutant Rabble
Ogryn Brute (Ogryn Berserker - Plague Ogryn) - Plague Zombie
Vehicles: AT70 Reaver Battle Tank - AT83 Brigand Super Tank - Chimera - Hellhound
Leman Russ Battle Tank - Salamander Command Vehicle - Stalk Tank - Sentinel
STeG 4
Artillery: Basilisk Artillery Gun - Colossus Bombard - Griffon Heavy Mortar Carrier
Hydra Flak Tank - Minotaur Artillery Tank - Medusa Siege Gun
Rapier Armoured Carrier - Wyvern Suppression Tank
Daemon Engines: Blight Drone - Blood Slaughterer - Brass Scorpion - Lord of Skulls - Plague Hulk
Super Heavies: Baneblade - Macharius Heavy Tank - Malcador Heavy Tank - Valdor Tank Hunter
Flyers: Arvus Lighter - Hell Blade - Hell Talon - Valkyrie

Warhammer FantasyEdit

Same as 40k, but with more connection to the actual wargame rather than just background fluff. Humans are less inclined to hate and kill their own mutated children (probably due to not having anywhere near as much propaganda and indoctrination), so instead unless there's a Witch Hunter in town to catch them, they tend to just leave their offspring out in the wilderness. Said humans are taken in by a race of similar mutants as well as various other types of Chaos beings called Beastmen. Said Beastmen generally rape, kill, murder, and eat (in an order based on mood and convenience) anything human or civilized anytime except when dropping these children off. Said children become the lower class of the Beastmen called Gaves, who will mate and have their offspring as the higher breed of Beastmen (the more mutated, the higher rank). If this sounds anything like a metaphor, its important to remember that Warhammer Beastmen are just Broo from Glorantha that were changed just enough to not get sued. The only real exceptions to the rule of mercy are the various Chaos-worshiping peoples (other than the father of Aranessa Saltspite) who consider mutations as gifts, and the peoples of Kislev AKA Warhammer Russia who are always being invaded by Chaos and as a result are more in line with 40k peoples (strangely enough other than the 40k Russia analogue). Of course nobility, even those who aren't members of Chaos cults, oftentimes hide the mutations of their children and themselves. In some canon even the Emperor himself, Karl Franz, had a nephew who was a VERY mutated Chaos Mutant named Wolfgang Holswig-Abenauer.

As well as magic and the powers of chaos the other key mutagen of the warhammer world is warptone, the mutating effects of warpstone cannot be underestimated, imagine taking th emost radioactive material in the real world, and dialing up its effects by 1000. The Skaven love the stuff, they mine it, make weapons from it and some even eat it. As a result mutations are treated as a badge of honour.

Among the other races of the World, Elves, Halflings, Dwarfs and the Undead appear immune to the effects of mutation...or at least have high resistances. They can still be driven mad by it, or injured from close proximity to warpstone, but otherwise are never at risk of mutations caused by Chaos. Exemptions exist for the Druchii Anointed, who have given themselves to Slaanesh willingly and spent considerable time in the Chaos Wastes, as well as individual persons of these races that pledged themselves to the Chaos gods, such as Dechala and Hegakin Rokrison (not to mention Chaos Dwarfs as a whole race, but then it was all forced due to desperation and generations of mutations). The Great Eagles are also known for such an immunity.

FalloutEdit

In Fallout, mutants are all over the place, both humans and animals. Fallout mutants are often associated with radiation, but the truth is that they are actually a result of infection from the bio-weapon known as the Forced Evolutionary Virus (F.E.V. for short), which escaped during World War III and interacted with the radiation to create the various monstrosities. The most iconic mutants in the Fallout series are the Ghouls, the Super Mutants, mutated animals, and the Centaurs.

Ghouls are humans who were exposed to both intense radiation and to F.E.V., which left them with burned, decayed, corpse-like bodies but biological immortality; the first ghouls were created during World War III, and have been around ever since. However, an increasing number of them are losing their minds and becoming mindless predators, "Feral Ghouls", and for this reason there is a lot of prejudice against Ghouls. The vast majority of the sane Ghouls are actually some of the nicest people in the games.

Super Mutants are humans who were exposed to pure F.E.V and so responded "well" to F.E.V. The result are hulking green humanoids, dramatically stronger and tougher than humans and biologically immortal, but also savage, violent, crazy, dim, and sterile monsters. If the subject/victim is uncontaminated by radiation or earlier F.E.V. exposure Super Mutants with superior intelligence are created instead and they can be quite civilized, even nice, because F.E.V. was first designed as a super serum. There's also the Nightkin, blue-skinned and sneaky offshoots who've all turned into schizophrenic blue super mutants from overusing invisibility tech; which is also what makes them sneaky despite being the same size as normal Super Mutants.

Many animals exposed to radiation contamination and the F.E.V. virus have mutated into larger, stronger versions of what they once were. Many insects have grown to huge sizes, such as football sized flies called Bloatflies, massive scorpions the size of a cow, huge mosquitoes bigger than a dog, and ants big enough to pose a threat to even armed humans.

Centaurs are pretty much what happens to anyone with severe genetic damage is exposed to F.E.V.: a mindless crawling mess of meat, kind of like a Chaos Spawn. Oh GOD BHHUBLUBBBBBBB.

The player can become one in Fallout 2 if he/she walks around for a bit in radioactive waste without proper foot protection (rubber boots). It's a sixth toe which can be amputated and then fed to people or eaten.

Judge DreddEdit

In Judge Dredd, mutants are generally treated as subhumans. They are the result of the ABC (that is, Atomic, Biological and Chemical) weapons deployed during World War III. They are banned from Mega-City One (though Dredd is working on changing that -- in fact, he happens to have mutant relatives, all of whom have a lantern jaw as big or bigger than his) and forced to live in the radioactive Cursed Earth.

ParanoiaEdit

In Paranoia, mutants are de-facto traitors. Friend Computer has as little tolerance for genetic deviations as the Imperium. Some mutants in Alpha Complex can register their mutations, avoiding mandatory execution. These mutants are required to wear an armband at all times identifying their status, and no matter how useful their powers this identifier will keep them from ever being really accepted in society. That is, if they survive long enough to fill out the registration forms without being killed first.

Mutant powers in Paranoia range from the typical and expected (telekinesis, mutant healing factor), to the hilarious and bizarre (Matter Eater). Nothing quite like walking away scott free because you ate the evidence before your arrest, especially when that evidence was a 14kg plasma rifle. Eating the evidence is Treason. Treason is punishable by Death.

Of course, friend computer is perfect, and would never allow a mutant to be assigned to a Troubleshooter team. You can trust your teammates completely. This also means that there is absolutely no way that you have any mutations. Disregard what it says on your character sheet. The Computer is perfect, so your sheet must be in error. Sheets in error are Treason. Treason is punishable by Death.

There are rumors that there are some mutants who can telepathically communicate with machinery, such as robots, devices, and even Friend Computer itself. Rumors are Treason! But, if such a mutant did exist, it would be Extra Treasonous and would never be allowed to register its mutant power! Treason is punishable by Death.

Soburin MutantsEdit

In the setting Mists of Akuma for Dungeons & Dragons 5th Edition, mutants are warped humans produced as a side-effect during the War of Kaiyo, corrupted into hulking, deformed giants by exposure to the dark sorceries and twisted science employed by the warring nations of Ceramia and Ropaeo. This has rendered them outcasts amongst the humans of their former homeland, forcing them to withdraw into the wilderness or otherwise begin carving out their own niche.

Rivaled in size only by enjin and oni, mutants tower over regular humans and can be twice as wide as a broad chested warrior. It is said that no two mutants are exactly the same and the biologists of Uragi have hypothesized that whatever force across the Great Divide transformed the giants must have killed countless others as it seems every one of them reacted to it slightly differently. All mutants do share some features though never in the same arrangement: facial disfigurement, misshapen (usually bulging) limbs, and tumorous growths about their bodies. Mutants have few shared tendencies save for an incredible will to survive and each is as different from one another as the unique tumors on their massive forms. Rumors of enormous, twisted mages are not unheard of but for the most part mutants capitalize on their physical superiority and size to become potent warriors. Even the spellcasters among them know how imposing their bodies can be, and ultimately only the kindest and most benign of their number fall back on methods of coercion other than intimidation.

Most mutants are amnesiacs who do not remember their past; those who do remember, generally choose to forget it, simply because they believe there is no hope of regaining their old lives. This social naievity only adds to the ostracism they receive. In return, it has made them friendly towards the other outcasts of Soburin, and mutants will readily extend the hand of friendship to bakemono, necroji, steametics, Oni-Touched and shikome... really, anyone who sincerely extends a friendly hand to mutants will typically find them happy to make friends.

Mutants form surprisingly democratic societies far from civilization on the very fringes of nearly inhospitable lands. These settlements are always in areas that can accommodate the giants’ prodigious size—within harsh mountain peaks, on the badlands at the edge of dying plains, and along dangerous seaside crags. Though each citizen is expected to help their fellows there’s usually at least a few smaller non-mutants living among them able to offer shelter to visitors. Lacking the resources and access to materials enjoyed by civilization, the homes and businesses in these villages are primitive and equipped with tall, sturdy poles that tower more than twenty feet up in the sky (to climb to avoid the Mists of Akuma). The citizens of these settlements work simple jobs and live simple lives, attempting to achieve a sense of peace from the chaos and decay all around them.

Naturally brawny, quick of foot, and able to recover from injuries at a remarkable pace, mutants are superior laborers. Mass production forges in the scientific prefectures actively seek out mutants to work the lines and their talents make them exceptional soldiers or pirates. When a mutant falls to criminal activity they are not hard to notice the distrustful fear many have for their kind beomes outright terror.

As a PC race in D&D 5e, mutants have the following PC stats:

Ability Score Increase: +2 Strength OR +2 Dexterity, +1 Constitution
Size: Large
Speed: 35 feet
Darkvision 60 feet
Hated: You suffer from the Hated condition - see below.
Expensive Fitting: The amount of custom-making or heavy tailoring required to make armor fit you increases its cost by +50%.
Mutation: Choose one of the following mutations. This mutation cannot be changed at a later date.
  • Fast Healer: When spending hit dice during a short rest, you heal twice the normal amount.
  • Freakish Arm: You have advantage on checks made to avoid being disarmed. At the start of your turn, you can choose to increase your reach by +5 feet, at the cost of enemies gaining Advantage on their melee attack rolls against you. This state lasts until the start of your next turn.
  • Otherwalker: Your body can become ethereal for short bursts of time. You can move through other creatures and objects as if they were difficult terrain. You take 5 (1d10) force damage if you end your turn inside an object. You may use this feature for a number of rounds equal to your proficiency bonus. You regain expended uses after a long rest.

Condition: Hated

You have disadvantage on Wisdom and Charisma checks against any humanoid that doesn’t also have the hated condition but you never have disadvantage on Charisma (Intimidation) or Haitoku (Intimidation) checks.

SupersEdit

In Supers RPGs, "mutants" come in two types.

The first is X-Men style "people born with their powers". At worst these powers are uncontrollable and have side effects, but for the most part these mutants look like normal humans on the outside with only a handful having small physical changes (elf ears, a third eye, green skin). People who are "changed" by some fantastic substance may have mutated, but generally aren't considered "mutants" when the distinction between human and mutant comes up in plot. There's literally no reason for this other than it's established comic book terminology that Spider-Man, the Fantastic Four and Captain America aren't "mutants" despite their changed DNA (as shown by how their children and clones are also superpowered).

The second is the "monsters" descended from humans who stereotypicaly live in sewers that look like the rest of the entries on this page. These can be used as both a source of super villains of unusual appearances, and a fictional underclass that's still mentally human. It can also overlap with the first type by having the mutants be those who aren't lucky enough to have an otherwise human appearance (as Marvel has done with the Morlocks).