Grolshlemin

Grolshlemins are bizarre, mutant Gremlins, horribly transformed after long term exposure to nuclear waste. Like normal gremlins, they enjoy causing havoc and destroying machinery, but their exposure to radiation have given them immunity to sunlight.

smogmf

The smogmfs are a race of diminutive people which live in a hidden forest village of mushroom houses. They stand three apples high and use the word "smogmf" interchangeably with any verb or noun, making it hard to communicate with them. They have vague legends of being descended from similar little blue people who had two arms and two legs, and accredit their current appearance to some sort of magical experiment gone wrong.

Fairy Hunter

Fairy Hunters are extremely agile, primate-like reptiles. Their triple jointed limbs are highly adept at quickly maneuvering through thick forest growth to catch their swift moving prey.

Duende

In the folklore of various cultures in South America, a Duende is a Gnome-like house spirit, who lives within the walls and under the floors. They are known for pulling various pranks, as well as clipping the toenails of children (sometimes accidentally the entire toe.)

Throughout 2008 in Argentina there have been several sightings of a shadowy, side-stepping, creepy dwarf with a pointed hat, including several videos. Is the Duende real, or is it merely a prankster reaching for 15 minutes of internet fame? Who can really say.

Link to the "Gnome of Argentina" video

Fairy

A Fairy is a type of primordial nature spirit, usually connected to forests or woodlands. The term refers to many different types of supernatural entity (brownies, pixies, nixies, goblins, trolls, etc.) as well as with anything to do with the supernatural realm, i.e. "the Land of fey," or "Morgan Le Fay." In western European belief they originated either as fallen angels or as a distinct species all their own. Much of mythology has to deal with how one avoids fairy mischief, such as charms to keep them away, prevent them from stealing babies, etc.

See also:

Nixie
Goblin
Tomte
Troll

Tomte

The Tomte is a Scandinavian household spirit. If treated correctly a Tomte will adopt a farmer's home and protect it from misfortune, if offended he will seek vengeance with elaborate, devastating pranks, and violent attacks on people and livestock. Tomtes are shapeshifters and can appear in any number of guises, the most common being a small old man ranging from a few inches to a few feet in height. They traditionally take up residence in the space beneath the floorboards. One who spilled liquid in the house was advised to shout a warning to the Tomte living below.

In modern Sweden, the Tomte has been associated with Christmas, a character similar to Santa Claus.

Dragon Fairy

Small, fairy-sized dragons with butterfly wings. Dragon Fairies are often used as mounts and beasts of burden for the diminutive folk. As they are rather intelligent themselves they can be hard to tame, but will respond to food.

Nixie

Nixie's are small fairies, nature spirits which inhabit forests the world over. In folklore they are a trouble making entity, but one that may help around the house if shown proper respect. They are usually depicted as small (several inches high,) with translucent wings and a plain, peasant style of dress consisting of greens and browns.

Redcap

The Redcap is one of the more psychotic supernatural entities one may encounter. They are named thus becasue they die their hats with the blood of their victims. Should the cap ever dry out they will die, so they are compelled to kill often. Redcaps wear iron boots but are still extremely fast, and will usually impale their victims on iron spikes or tear them apart with their bare hands.