Otherkin are the absence of awful brained humans who fear evolution, who hate religion or spirituality they can not understand.

Otherkin are real. It has nothing too do with roleplaying games. Kin aren't just teens either, they can be my age and higher. I am 28.
Otherkin is based on the belief their souls or bodies are human, they strive for a spiritual balance like they knew on their home realm worlds or planets.
There can be elves, fae, vampyres, angels, celestials, daemons, furries, therians, odd energy beings who have no gender, or body form called polymorphs, and others called starseeds.

Some otherkin believe in ascension. The belief one can send their energy vibration level through the roof, and ascend beyond petty thoughts, mind games, and silly human things, such as material posessions, money and the eternal wants of something or another.

Otherkin is not the home realm word for us as a collective. My home realm uses the word "A'lendiae". It means "people of the balance". Not as if humans should believe it, but humans as a race would be the butt puppets of another metaphysical world of evil kin if the others did not give a damn in saving them, earth plane, and the concepts of magick as breathe, dance and flow. But that is ok, we understand humans too be without evolution and maturity, and we hold great pity for them. One day perhaps they will learn that their hate and fear of the unknown are useless acts of depravity, and will see the eroor of their ways after they transcend after death into another realm..one they often made fun of for pointless reasons.

we people whom feel that humanity is a horrible race of cruel and heartless people and that therefore we could not possibly be a member of them. we believe that we are something else, or at least partially so...

and while some of our number do fall under the category of a "furrie" they are not the majority and also, not all of us think we are something else, but we still wish that we where.

The otherkin are a group of people who believe their soul originated as something other than human. The source of that origin as as varied as the individuals themselves. These can range from creatures of various mythologies. (i.e, faeries, dragons, vampires, etc.) to figures of more conventional spiritual beliefs. (i.e. Angels, Demons.) as well as but not limited to these and even more fanciful types. (i.e, Starseeds, extra-terrestrials, or any other variety.) The explosion of Otherkin groups and the spread of this belief is due in no small part with the accessibility of the Internet, allowing these groups to congregate and exchange ideas. Though the idea itself predates this media by a considerable number of years.
Each of these Otherkin types undergoes a process that is often called an Awakening. This awakening, according to several Otherkin sources is a process that brings about a spiritual transformation of the individual, taking them from their "Mundane" life and connecting, or in some cases reconnecting them with their "Other" selves and all of the attributes associated with it.

It is much debated as to the substance of this sub-cultures belief, as well as the mental stability of those who hold this belief. Often pro and anti Otherkin debates degenerate into namecalling matches with animosity on both sides.

Having listened to the different sides of the argument I can see valid points from both camps. The truth of the matter is this: It all comes down to what you believe. Belief, no matter how odd it may appear to any one else is strictly a matter of faith. The right to believe whatever you wish is just that. A right. If boiled down to its lowest common denominator, to denounce that which otherkin believe is to in essence denounce all faith. Why is it any harder to believe this person may be or have been an elf than it is to believe.. Oh say.. Some Jewish Carpenter returned from the dead? Or that some prophet moved a Mountain? Or even that a sea parted so slaves might escape Egypt? All faith defies logical reason. All of it. The use of any sweepingly general term is a poor practice, nor can a whole group be classified by the behavior of a select few. For example: Not all Germans are Nazis. This is not to say that some of these people don't have a mental illness associated with delusion or what not.. But to assume that everyone who has this belief is insane would be a gross misrepresentation. Generally one does not think a Christian crazy even though a ressurection, that claims of Christ's divinity cannot be proven. Nor should these people be unless the same yardstick is used to measure everyone.

Otherkin (n)

Literal meaning; Kindred to 'other'
Shorthand; 'Kin. (also used as a Suffix)

The Otherkin phenomenon is a young idea, being primarily silent as a concept until the mid to late 80s, coinciding with the popularization of the internet. And so internal understanding, interpretation, and methodology is fluid and actively debated. This malleable nature of understanding acts to confound concrete definition beyond the following general concept:

"'Otherkin' is an individual or community of individuals that Self-identify as being not completely human, or having been inhuman in a past life/incarnation. This idea is quantified through a combination of Personal and Shared Gnosis." It is a personal recognition of the enduring influence of a non-human aspect (Which can include terrestrial fauna, non-terrestrial fauna, incorporeal/spiritual entities, and mythical beings). Typically sourced in recognition of subtle influences to personality and/or behavioral predisposition. In some cases reference is also made to spiritual talent or natural aptitude towards specific practices. Particularly Shamanism/animism.

Otherkin may be loosely compared to other spiritual and philosophical ideas rooted in Shared Personal Gnosis and spiritual Self-realization such as Starseeds, Drop-ins, indigo children, and other practices based in modern new-age concepts.

Otherkin believe, for many reasons, that they aren't 100% human. Otherkin know they're physically human, and don't believe they can physically shift into their kintype.
Otherkin do shift in other ways. For example, mental shifting is the state of becoming more like one's kintype mentally, often with some mix of heightened senses, phantom limbs, having strong urges to act like one's kintype, etc.
Otherkin can feel as though they are an animal (therians/therianthropes), a fictional character (fictionkin/fickin), or an object or plant. One's type is discovered through a process called awakening.
Some believe they were their type in a past life, some believe they are in an alternate universe, some believe they are on a metaphysical level, or they may hold some other belief. There is no single "correct" way to be otherkin, so long as one identifies as, not with, something nonhuman.
Otherkin don't think it's oppressive for non-kin to wear animal ears, plantkin don't care if you cut grass or eat vegetables, and therians don't act as their kintype in public, as they know they're physically human and must fit into society. They're just normal people, only a bit less human on the inside. You may have been served coffee by a dragon this week without knowing. You may even have friends/family members who're otherkin. They aren't inherently mentally ill, and they blend in with society just as well as anyone else.

Retarded people on tumblr who think they are animals and other fictional characters.

Otherkin are a community of people who identify with non-human or partially non-human identities.

There are two belief systems in the community that can be set into two groups.

Spiritual otherkin: The belief that a non-human identity is caused due to the soul being non-human or a past life being non-human, such as soul misplacement.

Psychological/Mentalist otherkin: The belief that a non-human identity is caused due to imprinting on an animal at a young age or other means of imprint.

Otherkin do not believe they are phsyically their kintype(s) and know for certain they are not phsyically or biologically non-human.

Otherkin cannot choose their kintypes either, and can have more than one kintype.

Otherkin do however suffer shifts that cause them to act, feel or have the mentally of one of their kintypes. Not all otherkin have these shifts.