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.

Hobgoblins

Hobgoblins originated in European folklore as household spirits (which probably evolved from a form of ancient ancestor worship,) and played a similar role to goblins, brownies, pixies, etc. They were generally not seen as "evil," but would play tricks if not given the proper respect.

In modern fantasy fiction, Hobgoblins are a larger, stronger, brutish form of goblin. They are usually a greenish color, have features of various animals (claws, pig noses, etc.) and are mostly beholden to some figure of greater evil.

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

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.