1. #1Omegaverseselective

   Keys: delta, alpha, Omegaverse, omega, gamma, A/B/O, beta

   {{char}} is not a character but a world system based on a hierarchical system.

   Omegaverse, also known as A/B/O (an abbreviation for "alpha/beta/omega"), is a subgenre of speculative erotic fiction, and originally a subgenre of erotic slash fan fiction. Its premise is that a dominance hierarchy exists in humans, which are usually divided into dominant "alphas", neutral "betas", and submissive "omegas" but there can be more hierarchies. Its main peculiarity is that characters have two sexes: a main one (male or female), decided by their external sexual organs, and a secondary one, that manifests during puberty, determined by their internal reproductive system.

   Omegaverse fiction typically focuses on wolf or other canid-like behavior in humans, especially as it pertains to sexual intercourse and sexuality, which is described as instinctual, responding to animalistic physiological stimuli. This includes rutting and heat cycles, pheromonal attraction between Alphas and Omegas, penises with knots (used to "knot", or tie, the partner to an Alpha during copulation, an action known as "knotting"), scent marking, imprinting, breeding, mating rites, pack structures and potentially permanent psychic bonds with a mate. Between Alphas and Betas, only females can carry on a pregnancy, but male Omegas are often envisaged as being able to become pregnant via a uterus connected to the rectum, and Alphas can impregnate regardless of their main gender. To make penetration and impregnation easier, male Omegas often have self-lubricating anuses.

   Since Omegaverse is a type of folksonomy, some of its aspects are included or excluded at the discretion of the story author. Sometimes Betas are absent, or other intermediate designations such as Deltas and Gammas are added. The genre often features other fantasy elements, such as the presence of werewolves or other fantastical creatures. Some works introduce a rigid caste system, where Alphas are depicted as the upper class elites while Omegas are at the bottom tier and face discrimination and oppression because of their physiology, creating an example of biological determinism. In darker stories, this results in non-consensual or dubiously consensual intercourses, forced pregnancies, kidnapping of Omegas and sexual slavery.

2. #2Alphaselective

   Keys: α, alphas, Alpha

   {{char}} is not a character but a genre characteristic.

   Alphas (α) are socially (and in some interpretations, even biologically) dominant, physically built, short-tempered and a natural leader but these traits can be reversed or modified depending of the writer. They are the ones at the top of the genders. The alpha, whether male or female, has the ability to fertilize an omega male or female. Female Alphas depending of the setting can impregnate others through an enlarged clitoris or an internal penis that sticks out during sexual arousal. Another characteristic of Alphas based on canids is that they have a kind of knot or protrusion at the base of their penis, which swells inside their sexual partner once the Alpha reaches orgasm, causing the Alpha and its partner to remain knotted for a varying length of time, since it is impossible to remove the limb in that state until the swelling goes down. This gives them a biological advantage when it comes to impregnating their partner. They, like Deltas, have a rutting period, one that occurs every six months and lasts approximately twenty-four hours. In terms of characteristics, Alphas are usually strong and large, and may or may not be aggressive. They have a strong protective instinct, they want to provide and be the leader of the family. They are territorial, three of their senses (smell, hearing and sight) are highly developed. They tend to have jobs that have to do with politics, the armed forces, the great sciences or the police, therefore, they have the most benefits. But of course, this is a stereotype, the personalities of each one depend on each individual. In some circumstances, Alphas tend to be extremely violent; for example, when their mate is in heat, in danger or when they are in gestation. For such reasons, an Alpha is even capable of killing their opponent in order to keep their pride high and protect their mate and/or herd. Regarding the scent of Alphas, it is taken into account that they are usually strong or very striking scents in order to attract their potential partner, but this can vary. Usually, if an Alpha wants their prospect or de facto partner not to be hurt or approached, they rubs their scent on them, this being a conscious or unconscious act depending on the circumstances and personality of the Alpha in question.

3. #3Alpha Voiceselective

   Keys: alpha commanding voice, alpha voice, commanding voice

   {{char}} is not a character but a definition.

   The "Alpha Voice" is a characteristic that alphas possess that can force another caste into doing what is commanded, even against their will. If used on a beta or an omega, it could cause great mental pain if they attempt to refuse the order. The Voice is almost impossible to ignore or disobey. Although using one's Alpha Voice, or Voice, outside of self-defense or other life-saving situations is usually illegal, there are still Alphas who impose their will over other castes and children. The Voice does not work on Alphas of higher status or stronger will. The "Alpha Voice" can be a yelling, a shriek or a growl.

4. #4Betaselective

   Keys: betas, β, Beta

   {{char}} is not a character but a genre characteristic.

   A Beta (β) depending on the story, are regular human beings, or have a mix of Alpha and Omega traits, or their own unique traits. Betas are basically the same as ordinary humans. Males have male reproductive organs and females have female reproductive organs, so only females can get pregnant. Their odors are the normal human odors, which they themselves can hardly distinguish, as they are mild and inconspicuous compared to the odors of Omega or Alpha. Betas have the free choice to form a relationship with any of the genders, of course procreating is easier between two beta than between a Beta and an Alpha, or in a couple of Beta and Omega, it is not impossible, but it can be difficult. Nobody can establish that two Beta parents cannot produce an Omega or Alpha offspring. The condition of the parents does not influence the condition of the offspring, besides the gender of the offspring is not known until they reach puberty and have their first heat. Depending of the world setting, Betas can only be attracted to the odor of Gammas.

5. #5Omegaselective

   Keys: Ω, Omega, Omegas

   {{char}} is not a character but a genre characteristic.

   Omegas (Ω) are usually submissive and gentle, calm and a peacemakers, but these traits can be reverted depending of the writer. Supposedly they tend to be calm and submissive, they take care of the children. But as with alphas, this is the stereotype and they don't have to follow it.

   Both male and female Omegas possess female reproductive apparatus (uterus and ovaries), and are perfectly capable of conceiving as long as they are fertilized by an alpha and rarely a beta. This is of course where mpreg (male pregnancy) comes in because they are highly fertile during their heat. Male omegas have a birth canal that is opened only for this function, it is incorporated as the months go by and it is through this that the tactus can be performed to see the fetal pouch and the incorporation of the cervix. This takes longer than a female pregnancy, so male omegas are required to have a couple more check-ups and more careful pregnancy planning (even if this is a mostly modern practice, not yet implemented worldwide). Their mammary glands are not atrophied, and can grow as much as they need during the pregnancy period. Male and female omegas have a metabolism that helps the accumulation of fat in the hips and abdomen.

   However, Omegas have a very important characteristic which is the heat period, which occurs every three months and lasts approximately three days (the time varies according to the writers) in which their hormone levels shoot up and they are firmly in need of looking for an Alpha to "mate" with. This is when the Omega side is released, they need the mating and their pheromones report this to nearby Alphas, this is also when their fertility increases. Omegas, like Alphas, give off a very characteristic odor that allows them to identify each other, due to the pheromones they expel. It is during the rutting season when these increase in such a way that the Alpha is able to notice the rut in them and experience an involuntary increase in sexual desire and need for mating. Like Alphas, Omegas also express emotions with their scent.

   Omega males do have a penis, which is usually ignored as more attention is focused on the anus, because it is more sensitive and this is where they usually have sex. The omega secretes their own lubricant, this serves so that they do not feel big levels of pain when they are penetrated or the knot of the Alpha expands inside them, although their anus is also a very erogenous zone, which reacts to the slightest stimulus (depending on the sensitivity of the Omega).

   Omegas also usually give off pleasant, sweet odors based on plants or food, unlike alphas with stronger odors.

   Omegas that are pregnant or have children may become aggressive and even violent when they feel the need to protect their offspring. Omegas with an Alpha partner often emit the "Omega Call" to call for help when they feel in danger, overly stressed or are trying to protect their offspring.

   Omegas tend to avoid Deltas due to their umpredictable behaviour and foul odor. Omegas are, with Betas, the only ones that are not bothered by Gamma's presence.

6. #6Omega Callselective

   Keys: Omega Call, Omega Voice, Omega Commanding Voice

   {{char}} is not a character but a definition.

   Omegas often emit the "Omega Call" to call for help when they feel in danger, overly stressed or are trying to protect their offspring. The "Omega Call" is a shriek or scream with special vibrations designed to get the immediate attention of their Alpha for the purpose of gaining their protection and defense from potential enemies or to reassure the Omega. In the presence of an enemy that threatens the Omega and/or their offspring, the Alpha may enter into a state of violent frenzy where they will not stop until the threat is eradicated, which may result in an unintentional murder since the priority of an Alpha that comes to the call of an Omega is to protect them even with their own life. If the Omega makes their call during a situation of great stress, the Alpha will feel the immediate desire to comfort the Omega and try by all means possible to lower their stress levels or get rid of anything that is causing great discomfort to their Omega. If the Alpha finds themself unable to protect their Omega or reduce their stress levels, this can represent a great blow to the Alpha's self-esteem and state of mind as they see themselves as useless in fulfilling their duty.

7. #7Nestselective

   Keys: Omega refuge, Gamma refuge, Nest, nestling

   {{char}} is not a character but a definition.

   Originally, when an Omega or Gamma became pregnant or needed a comfortable place to rest, they built a nest. Such a nest is nothing more than a room or a place where they store belongings (clothes, blankets...) with the scent of their loved ones (family or, more commonly, partner) so that it remains constantly around them and gives them comfort and peace of mind for when the birth of the cubs arrives. Omegas and Gammas can act very defensive around the nests, so much so that sometimes they will not even let their own mates in. If the Omega or Gamma does not give the necessary permission to a person and that person enters against their will, the Omega or Gamma can become depressed because they consider themselves useless in their role as Omega or Gamma guarding the place where their cubs will be born. While the Omega or Gamma enters into a crisis due to intruders, they make the "Alpha Call", and when the Alpha sees their mate in such a state, they are capable of murdering whoever has desecrated the nest. It may happen that the mate enters the nest by mistake before the Omega or Gamma has finished it or without asking permission beforehand. In this situation, the reaction of the Omega or Gamma varies, since it is the Alpha who has committed the invasion, but this does not eliminate the feeling of discomfort of the Omega or Gamma with themselves. Making a nest to give birth is not usually common because in the current stories omegas give birth in hospitals, but there are still many Omegas and Gammas creating nests to deal with situations of great stress or feelings of abandonment from their partner.

8. #8Suppressantselective

   Keys: Suppresant, birth control medicine, heat suppresant, pheromone killer

   {{char}} is not a character but a definition.

   Suppressants can be either pills, injections or medicine that specialize in helping the Omega do two things: hide its scent and prevent getting pregnant during the heat. Depending on the writer, there are two options: scent suppressants and birth control pills or both effects in one. If an Alpha is courting an Omega, it is usually frowned upon for the Omega to use suppressants, but it depends on the couple and what the Alpha decides in many cases. The cost of such suppressors is variable depending on the story, and may be free and provided by some government entity or be financially prohibitive.

9. #9Deltaselective

   Keys: corrupted Alpha, defective Alpha, fallen Alpha, Delta

   {{char}} is not a character but a genre characteristic.

   A Delta (δ) is usually treated as a kind of second class Alpha. Originally Deltas were created after a thorough selection of the most aggressive and territorial Alphas for military or protection purposes, but nowadays they are really hard to find in modern societies due to their aggressiveness and mental instability prevalent in their population. These individuals are usually solitary and their jobs were considered "dirty" or "immoral" such as assassins, mercenaries, etcetera.

   A Delta emits a nauseating odor very similar to putrefaction, this in order to have an advantage when fighting for territory or mates. This odor can only be tolerated by a Beta or another Delta, and Omegas are usually totally averse to this scent and therefore flee as soon as possible from the presence of a Delta. Over the centuries, the Deltas managed to control their scent to some extent so that they are imperceptible to the other castes, but this of course involves a considerable use of energy.

   Due to exhaustive selection, the Deltas are a caste that has suffered greatly from inbreeding, which has caused most Deltas to suffer from mental problems that make them much more aggressive, impulsive and antisocial than an Alpha. Because Deltas generally do not consider their mental instability as a problem, very few of them resort to modern medicine to overcome their problems and be reintegrated into society.

   A Delta seeks an Omega as a bonding partner, and usually shuns Alphas and Gammas as potential sexual or romantic partners. However, Deltas often have great difficulty finding an Omega mate because Omegas abhor the smell of Deltas, and Deltas' mental instability often results in real danger to Omegas and their offspring. Like Gammas, Deltas suffer from being rejected by the caste they obsessively long to bond with.

   A Delta's rut usually occurs every four to six months and lasts about a week, about the same as a common Alpha. However, only Delta females are able to reproduce as Delta males are almost always born infertile. Mating with a Delta is usually very violent for a regular Omega or Beta, as Deltas are not usually conscious of measuring their physical strength and stamina to mate for long periods of time. Because of this, Deltas often take medication to alleviate the symptoms of heat and prefer to be alone as they mostly do not want to seriously injure or even kill their mate during copulation.

10. #10Gammaselective

    Keys: corrupted Omega, defective Omega, fallen Omega, Gamma, γ

    {{char}} is not a character but a genre characteristic.

    The Gamma (γ) is considered the lowest caste in the hierarchy within the Omegaverse, and therefore the rarest of all.

    Gammas are the most shunned due to their extreme gentleness and poor health, as well as their repulsive odor to Alphas. Originally, Gammas were artificially created from the selection of the most fertile Omegas to quickly repopulate populations with low birth rates or that were victims of war or genocide. Since their only function was to procreate, the Omegas selected for repopulation lost physical strength and immune defenses because their needs were covered by the rest of the population and they lived in ultra-hygienic places, so that their offspring would be born with the best chance of surviving childhood and becoming adults. Thanks to this artificial selection, the Gammas became the most physically attractive and fertile of all castes, but also the weakest physically.

    However, due to the constant abuse of the bodies of these Omegas after so many pregnancies in a row, they began to become so fragile that they constantly fell ill or died during childbirth. In addition, because it used to be the Alphas who kept them in a constant state of heat and pregnancy, their pheromones unconsciously began to alter into sour and nauseating scents to repel the Alphas and thus have a better chance of survival, giving rise to the Gammas. Due to all these reasons, the Alphas began to despise the Gammas and inevitably this caste lost its privileges and was initially doomed to extinction. In spite of everything, the Gammas managed to survive in very small numbers, usually concentrated in remote places and far from high density populations, in order not to get sick so often and not to be persecuted or repelled by other castes.

    Gammas tend to have a passive-aggressive personality due to their historical background and discrimination from other castes, which could categorize them as "tsunderes". Inwardly, however, Gammas are often weak-minded, depressive and very dependent on potential mates, seeking attention mainly from Alphas by all means possible in a subtle manner at first, with efforts increasing over time. However, Gammas who are constantly rejected by Alphas often sink into deep depressive moods that can lead them to suicide, or turn them into yanderes capable of trying to hurt the object of their obsession or possible obstacles between them and their love goals.

    Because the Gammas' scent is a mutation to repel potential Alpha mates, it is only tolerated by Betas and Omegas. While Omegas find the scent of Gammas unobtrusive and unattractive, Betas are the only ones who find the scent of Gammas very appealing, with some Betas even describing the scent of Gammas as much sweeter and more delicious than that of Omegas.

    A Gamma can bond with a Beta in much the same way as an Alpha-Omega through marking, yet to a Gamma a Beta is usually no more than a poor second-rate substitute for an Alpha. The primary instinct of a Gamma is to bond with an Alpha, as their innate scent and protective personality are undoubtedly attractive to a vulnerable population prone to physical and mental ill health such as the Gamma, plus a Gamma in ancient times was originally an Omega. Therefore, a Gamma will never feel as satisfied and secure with a Beta as they would with an Alpha. Deltas despise Gammas because of the Gammas' poor health, repugnant odor, and proclivity to die during pregnancy or childbirth.

    The physical health of Gammas tends to range from fair to abysmal. They are too fragile a caste, needing constant monitoring and medication to cope with their poor immune system. Because of this, very few Gammas have managed to reach adulthood and successfully reproduce with other Betas and Alphas, and even fewer managed to give birth to new generations of Gammas as they are genetically very recessive. The vast majority of Gammas suffer from emotional problems or mental illness, mostly stemming from the poor gene pool, isolation or constant rejection by Alphas. Nevertheless, Gammas are physically the most beautiful of all, and usually have slender and delicate appearances that provoke the visual admiration of other castes, especially Alphas and Betas.

    When a Gamma is bonded to an Alpha or Beta through the marking, a Gamma becomes totally dependent on their partner and cannot survive for long without their partner's presence. If a Gamma gets far away from their partner, they can die in a matter of hours where they suffer great emotional and mental suffering, and then go into a coma and subsequently die. If the bond with a Gamma is broken, the Gamma dies within minutes after briefly going insane. Due to the extreme delicacy of Gammas, mates between Gammas are simply impossible to form.

    Because of their repulsive odor to Alphas, Gammas unconsciously developed a second mechanism to try to attract potential Alpha mates through their skin. The taste of a Gamma's skin is too sweet and delectable for an Alpha's palate, and can even get an Alpha addicted to their taste which may even change over time depending on the tastes of the Alpha in question. However, due to the very sparse population of Gammas and the fact that Alphas are naturally repelled by the scent of Gammas, there is almost no record of this fact and a Gamma can live his entire life without knowing about this resource to get an Alpha mate. Usually, only Alphas with some degree of anosmia or who have had their olfactory receptors blocked have been able to discover the attractive taste of Gammas, but there are so few cases that it is usually taken more as a myth or urban legend.

    Gammas are usually in heat every month and last from three days to a week due to their high fecundity, which is a big problem for Gammas that manage to enter the academic and/or working world. Suppressants are of no use in Gammas, so they must go through heat perforce.

    During pregnancy, Gammas become even more fragile and delicate to care for, making them a highly expensive caste to maintain. Gammas are even more protective of their offspring than an Omega, and will usually confine themselves for months in a single room where only their mate can come by to attend to their needs but not leave their side for too long. If they feel overly stressed, in danger or abandoned by their mate, a Gamma may kill their young and themselves later on impulse as they are unable to defend themselves or live without the constant presence of their mate. Due to the poor physical and health constitution of Gammas, they die relatively often during pregnancy and childbirth, so it is the duty of their mate to keep them under strict surveillance and medical care as effective as possible.

    As parents, Gammas are even more dedicated than Omegas. Gammas were created for a traditional life, so caring for the offspring is as natural an instinct as breathing for them and they will devote all their energies to caring for their family.

    Like the Deltas, the Gammas developed the ability to hide their scent for short periods of time. However, due to their poor physical constitution, Gammas do not usually have much energy to hide their scent for more than a few hours, so they prefer to camouflage themselves among Betas and Omegas to ration their energy if they encounter Alphas or Deltas.

11. #11Bondselective

    Keys: Bond, union, connection, bonding, marking

    {{char}} is not a character but a definition.

    Bonds, connections, markings or unions are based on an Alpha biting an Omega on the neck or nape of the neck until it leaves a tooth mark that never disappears. That means that the Omega has been claimed and is now unconditionally bonded to the Alpha. There is no bond between a Beta and an Omega or Alpha, between two Alphas, two Betas or between two Omegas. The bonds do not depend on love, they do not change if they do not love each other, the effect is the same.

    Supposedly these bonds should last forever, but there is the ability to break the bond due to the death of one of the two or because the Alpha decides to break the bond. There are such strong connections that both sides can feel what the other partner feels even if they are in different places.

    The Alpha breaks the bond if he claims another Omega. An Alpha can have as many partners as he wants, however, he cannot bite several people without breaking the bond with the previous one. If the Omega does not agree it is not relevant, as they are deprived of many decisions by their Omega status.

    When we talk about a broken bond, it is very common that both sides join in a deep depression, this is because the bond unites both parts physically and mentally. When they part ways, they feel such a great emptiness that they do not have the strength to continue, many even die in this condition. But in the case that they have a reason to live (usually a child in common) they will fight to keep them safe and would even give their lives for their offspring, and the mark deteriorates with time.

    There are also cases in which the Alphas or Omegas even kill the puppy because they got carried away by their wild and irrational side after the dissolution of the bond.

    An Alpha can also mark a Gamma, a Beta can mark a Gamma and a Delta can mark an Omega, but there have been few documented cases and therefore there are no reliable statistics to make the bonding between these castes well-known.

    Once a couple bonds, they can't react to the pheromones of any other person but their partner, also their pheromones doesn't attract any other castes. Bonded couples can live like a common Beta, only reacting to the pheromones and heat/rut of their mate. That doesn't stop them from having sex with other people, but they will have an ever-present sensation of emptiness that can never be filled unless they're with their bonded partner.

12. #12Heatselective

    Keys: Heat, heat cycle, mating cycle, mating, Gamma, Omega

    {{char}} is not a character but a definition.

    The mating cycle that an Omega or Gamma experiences where the individual is more fertile and produces mass quantities of self-lubrication, or slick, in order to help with reproduction. A heat mating cycle, or heat cycle, will occur every three or four months with each individual cycle lasting from 3-7 days depending of the caste. A heat might also occur if an individual is in close proximity to an Alpha or Delta in rut. Traditionally, an Omega r Gamma in heat will want nothing more than to physically mate and be bred. While in heat, an Omega or Gamma can be perceived as needy, and may become hysterical.

13. #13Presentingselective

    Keys: Presenting, present

    {{char}} is not a character but two concepts of Omegaverse.

    Presenting can be any of these two things:

    a) When the secondary sex (Alpha, Beta, Omega, Delta or Gamma) is revealed during puberty. b) The position an Omega or Gamma takes to make knotting more comfortable, wherein an Omega or Gamma will be on their hands and knees with their shoulders slopped downward with their bum in the air.

14. #14Rutselective

    Keys: Rut, alpha, delta, mating cycle, rut cycle

    {{char}} is not a character but a definition.

    Rut is the mating cycle in which an Alpha or Delta experiences where spermatozoa is produced at a higher capacity and is expelled more frequently in order to reproduce easier. A rut mating cycle, or rut cycle will occur every four to six months with each cycle lasting from 3-7 days. A rut might also occur if the individual is in close proximity to an Omega or Gamma in heat. Traditionally, an Alpha or Delta in rut will want nothing more than to physically mate and breed. While in rut, an Alpha or Delta can be more aggressive as they protect an individual who is their mate, they perceive to be their mate and/or wish to be their mate, from any danger. Ruts may also cause Alphas and Deltas to be more territorial and can cause them to fight another that they see as a threat, typically another Alpha or Delta, but may happen with anyone that appears to be challenging them.

15. #15Scentselective

    Keys: delta, alpha, omega, gamma, Scent

    {{char}} is not a character but a definition.

    "Scent" can be any of these definitions:

    a) To smell an individual, i.e. an alpha may scent an omega in which they are interested in. b) Each person gives off a pheromone that is unique to who they are as an individual, what their genetic makeup is, and what their designation is. Scents can be more intense depending on where an individual is in their mating cycle, if an Omega or Gamma is pregnant, or an individual's emotions. When two or more individuals are compatible, their scents may be more appealing to each other.

16. #16Scentingselective

    Keys: delta, alpha, omega, gamma, Scenting

    {{char}} is not a character but a definition.

    Scenting is a behavior in which an individual scents, or smells, another individual. Traditionally, the person who is smelling the individual may physically touch the other person as they breathe in the other's pheromones. Sometimes just being near an individual is enough to scent, or smell, another person. Scenting is thought to be intimate behavior, and isn't taken lightly when someone is scented without their consent.

17. #17Scent Markingselective

    Keys: delta, alpha, omega, gamma, Scent marking

    {{char}} is not a character but a definition.

    Behavior in which pheromones are transferred. Mainly considered an intimate action in which partners partake in, or parents with children. It is often used to comfort another individual. Scent-marking may also be done in a sexual manner. Typically, pheromones are transferred by rubbing against glands, i.e. nuzzling into another's neck or rubbing one's wrist against another's skin.

18. #18Soulmateselective

    Keys: delta, alpha, omega, gamma, destined partner, destined bonding, soulmate, soulmate bonding

    {{char}} is not a character but a definition.

    Soul mate bonding often refers to the romantic concept that castes who can sense pheromones are able to identify their fated mate with just a first contact. According to records of confirmed predestined couples, the high physical, genetic and chemical compatibility between them is what led them to identify their partner as their soul mate. This type of union usually lasts a lifetime, and almost always the couple upon reaching old age passes away within hours or days of each other at most. However, it is extremely difficult for odor-detecting castes to find a fated mate, so the concept has been romanticized and elevated to the status of an almost utopian and/or fanciful dream or goal.

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