Fairies

Fairies are mischievous supernatural beings that come in a variety of forms. They can only be seen by those who have been to their realm or if they choose to be seen.

They appeared as the "monster of the week" in the episode Clap Your Hands If You Believe, wherein it is revealed that they are the cause of UFO sightings, and other "extraterrestrial" encounters. There are many theories about the reason they abduct people - one of them being to bring people to Avalon so they can serve Oberon, King of Fairies. They also appear in the episode LARP and the Real Girl, as well as in Slumber Party.

Characteristics
Fairies come in many forms, and have been described as "magical and mischievous beings from the realm next door". This realm, Avalon, is considered another dimension or reality. Fairies have been classified into two groups - one consisting of light fairies and the other of dark ones. However, there have not been many details about identifying fairy classes.

Fairies, despite having different types, have some form of society and justice system, called the Fairy Tribunal. This court decides on the fate of beings that break the presumably existing laws of their kind. This is not limited to fairies, as seen when a fairy named Gilda brought her former human enslaver to face their tribunal. Fairies, despite being different kinds, all seem to cooperate with each other.

They appear to be sensitive to "energy", as one of them made the comment that "fairies are all about energy". In "Clap Your Hands If You Believe", the leprechaun that appeared was able to know that Sam Winchester had no soul, as it said that human souls have a certain "perfume".

In addition, it seems they also suffer from arithmomania, a mental disorder that may be seen as an expression of obsessive-compulsive disorder. Sufferers of this disorder have the overwhelming impulse to count their actions or objects in their surroundings. Because of this (and regardless of how powerful any fairy may be) it must stop what it is doing to count every grain of sugar or salt, one by one, if someone pours it in front of them.

Humans can interact with them and ask for favors; appeasing them by leaving a bowl of cream. Cream affects faeries in the same way that alcohol affects humans, rendering them intoxicated if they eat it. They claim to possess abilities (which they consider to be "real magic") that surpass those of angels and seem unafraid of them, as inferred by the leprechaun when he claims to be undaunted by Lucifer. He claims that it is within his power to restore Sam's soul (but not pro bono, of course) a feat beyond the reckoning of both Castiel and the King of Hell. However his claims were never proven, and when fighting Sam Winchester, he proved to be much weaker than even lower-tier angels.

Fairies can be summoned by spells to make deals with humans, often exchanging their services for a price (i.e. the rights to all of the firstborn sons in an area). Once called upon, a fairy will remain in that area until banished by a spell.

Type of Fairies

 * -|Fairy King=

Oberon is the King of the Fairies. Not much is known about him except that he is respected throughout Avalon as its leader, and captured humans are sent to serve him. The limit of his powers and abilities are unknown.

More of an alignment than an actual type of fairy, 'good' fairies appear human. Unlike other fairies, they seem more akin to the fairies depicted in classical fairy tales, as they live in the woods of Avalon, are much more benevolent, and dislike harming others. They can, however, be bound and forced to kill by magic. They are quite powerful, although binding them seems easy, as even a very weak magic user can do it.
 * -|Good Fairies=

Originating from Oz, a part of the fairy world, wicked witches are fairy magic wielders who are utterly evil, cruel, and power-hungry. Unlike human witches, who do not practice 'real magic' according to Wayne Whittaker, fairy witches are much more powerful creatures with very few weaknesses on Earth. The Wicked Witch of the West, like her sister of the East, was so powerful that she could only be deterred by powerful devil's traps and magic that also originated from Oz or other fairies, like the Ruby Slippers. Although never shown, it is hinted by Sam and Clive Dylan that there are much more than two wicked witches, such as weaker ones among the two sisters' minions, and an unknown coven that was murdered by The Wizard of Oz and possessed powerful magical objects, like The Inner Key Of Oz.
 * -|Wicked Witches=

Not much is known about them, but Charlie said the Good Witch of the North's kiss caused Dorothy to stay protected from the Wicked Witch of the West. As they originate from Oz like the wicked ones, it can be inferred that they also cannot be easily harmed on Earth. Additionally, Frank's story also had another Good Witch who reigned from the South.
 * -|Good Witches=

Leprechauns are an especially powerful type of fairy. In whatever human form they take, they are normally-sized. They can travel great distances in the blink of an eye and overpower humans easily. They may be capable of feats even beyond the reach of angels, as a leprechaun claims to Sam that he is able to retrieve his soul from Lucifer's Cage because they have "a way of getting in back doors", although the validity of this claim is never proven. Only one has appeared so far.
 * -|Leprechauns=

These are little beings that appear as naked, beautiful women with wings that shine like tinkles. It seems that they can get very angry when someone notes that they are naked, as Dean Winchester did and the Tink began to attack him - though it is possible that it was sent to attack him in the first place. They are extremely quick, and able to fly with the aid of their wings. They're also quite strong, despite their small size, able to knock an adult man around, without any sign of difficulty.
 * -|Tinks=

These appear as little humans about the size of a hand. Not much information was revealed about them. They are very feeble, and their powers remain vague.
 * -|Elves=

These fairies are dangerously homicidal and are known for mercilessly killing travelers who trespass their territory. Their hats are red because they soak them in the blood of their victims, and, according to lore, redcaps have to kill regularly because if the blood dries on their hats they will die. The one seen in the episode displayed enhanced strength and the ability to teleport.
 * -|Redcaps=

Not much is known about it although Garth claims to have killed a tooth fairy in his first case as a hunter. It is unknown if it is a unique fairy or a class or species. Sam and Dean had a case involving such a fairy, although it is actually a result of reality warping by the imagination of the cambion Jesse, and is thus possibly far from what a real tooth fairy is like.
 * -|Tooth Fairy=

According to Wayne Whittaker the leprechaun, apparently there is a fairy devil. Its name, gender, and the powers it possesses are unknown. It is possible it was simply meant as a retort.
 * -|Fairy Devil=

Little is known about the Tin Man, other than he was a freedom fighter that was turned into that form by the Wicked Witch along with two others; who were turned in to the Cowardly Lion and Scarecrow. Upon his death Dorothy Baum kept his head as a tribute to his sacrifice.
 * -|Tin Man=


 * -|Banshee Fairies=

Dean tells Sam that banshees attached to fairy lore are benevolent and use their scream to warn of impending death, unlike malevolent banshees who prey on the vulnerable.

It is implied that other types of fairies include sprites, spriggans, boggarts, brownies, gnomes, and goblins. Additionally, creatures from Oz could also be considered to be fairies, such as flying monkeys.
 * -|Other=

Powers and Abilities
Fairies' powers, as they're known to come in "different shapes and sizes", are dependent on the fairy at hand, as certain types hold separate, individual powers.


 * Magic - Fairies are incredibly powerful magical beings, being apparently "all about energy."
 * Spell Casting - Leprechauns have been shown to make deals, like crossroads demons, to cast spells.
 * Invisibility - They can only be seen if they want to be or by people who have traveled to their realm and returned. This ability continues to work, even after the fairy in question's death, meaning humans who haven't been to the fairy realm can't see their remains.
 * Telekinesis - Some fairies, such as leprechauns, can move objects with their minds.
 * Teleportation - Some fairies, such as leprechauns, can teleport from any location to another in the blink of an eye. Good fairies can take people with them.
 * Apporting  - Good fairies can teleport people to places, as with Gilda where she able to send Gerry to Avalon.
 * Soul Reading - A leprechaun showed the ability to tell if a person has a soul or not, just by looking at them.
 * Immortality - Fairies are immortal beings.
 * Super Strength - The strength of a fairy depends on the type of fairy. Leprechauns can launch humans across rooms with their bare hands easily, tinks can knock humans around by ramming into them, and redcaps and the Wicked Witch can throw humans around.
 * Flight - Tinks can fly.
 * Reality Warping - Powerful fairies, such as Gilda, and leprachauns can manipulate reality, doing things such as manipulating space to imprison a person, or making a person mimic death, with no actual stimulus (much like hex bags). The fairy being known as the Wicked Witch was able to transform three freedom fighters into a tin man, a scarecrow, and a cowardly lion. Also, Gilda was able to transform a fake-sword into a real sword and two guns into feathers.

It is speculated that they all have a number of common abilities within them, like magical knowledge (being able to cast magic thanks to their knowledge and nature), invisibility (as they can hide from humans who have not been to the Fairy Realm), enhanced strength, possibly immortality, and telekinesis (the ability to move objects with their minds). However, special abilities could also be limited to some kind of fairies, like flying (as tinks have wings).

Weaknesses
As with many other supernatural creatures, fairies have weaknesses that can be used to defeat them. However, none of these methods were proven to be able to completely kill them; the only way to stop them is banishing them to their realm through a spell. However the above isn't completely true: if a fairy is exposed to a very strong electromagnetic field for enough time they will lose control of themselves and explode, as Dean was able to kill one by trapping the fairy into a microwave oven, however as the fairy in question was very weak, its unknown what affect it would have on a more powerful fairy.
 * Iron - Fairies hate iron as it is proven to be harmful against them (even though it does not kill them).
 * Silver - It can cause dark fairies pain and can kill them
 * Items that have multiple grains - If someone pours any substance that has a lot of grains in front of them, they have to stop to count each grain one by one.
 * Radiation - If a fairy (at least Tinks due to their small size) is exposed to microwave radiation, they will explode.
 * Cream - They also love cream, which, like alcohol, intoxicates them.
 * Magic - Fairies can be summoned, bound and banished by magic, once banished they are unable to return, unless summoned again.
 * Poppy Extract - The Wicked Witch could be harmed by poppy extract.
 * Ruby Slippers - The Wicked Witch could be killed by the Ruby Slippers.
 * Devil's Trap - The traps and protective enchantments of the Men of Letters were so powerful, they could deter even the Wicked Witch.

Mythology
In Western European folklore, a fairy is a type of mythical being or legendary creature, a form of spirit, whose habitats are woodlands and gardens. Fairies resemble various beings of other mythologies, though even folklore that uses the term fairy offers many definitions. Sometimes the term describes any magical creature, including goblins or gnomes; at other times, the term only describes a specific type of more ethereal creature.

Appearances

 * Season 4
 * It's the Great Pumpkin, Sam Winchester


 * Season 6
 * Clap Your Hands If You Believe


 * Season 7
 * Plucky Pennywhistle's Magical Menagerie
 * Season 8
 * Southern Comfort
 * LARP and the Real Girl


 * Season 9
 * Slumber Party