Goblins

A goblin is a legendary evil or mischievous creature; a grotesquely evil or evil-like phantom.
They are attributed with various (sometimes conflicting) abilities, temperaments and appearances depending on the story and country of origin. In some cases, goblins have been classified as constantly annoying little creatures somewhat related to the brownie and gnome. They are usually depicted as small, sometimes only a few inches tall, sometimes the size of a dwarf. They also often are said to possess various magical abilities.


TYPES OF GOBLINS

Hobgoblins
Hobgoblins, with their dark colored shaggy hair, are thought to be one of the most benign forms of goblin, closely related to brownies. They are small tricksters that love to mess with human lives through direct influence or theft when they are really in a mood to pull practical jokes. The main thing that separates them from other goblins though is their close labor relations to humans. They will do toiling work around a human house for a bowl of fresh milk or a spark of fire since they enjoy the warmth but cannot create their own just like other goblins.

Kol'ksu
The Kol'ksu are water goblins. They are very psychic, and they are very carnivorous. They are also beautiful, in an alien sort of way. They have white hair and white irises in their dragon-like eyes. The features are delicate and they might easily be mistaken for mythological mermaids...or sirens. 
Kol'ksu never allow themselves to be seen by humans, and woe to the human who might somehow encounter one!

Winged goblin
Winged goblins are very rare, and considered of special omen among the other goblins. They come from a very old line that has mostly died out, but a particular combination of genetics can result in the birth of such a creature among the oldest of goblins.

Bogey
Bogeys tend to be the smallest form of goblin. To make up for their size, they are also very ephemeral, making them the hardest goblin to actually kill. They tend to be completely black in color and live in the dark places of common houses such as attics, cupboards, and closets. These particular dwellings of Bogeys help them in their most common exploits against human beings. They love to pop out from their hiding places to scare children and adults within the house, which where the terms “bogeyman” and “boogieman” came from.

Kobold
The Kobold is a very famous race of goblin with origins in Germanic mythology that continues in German folklore. One of the aspects that make them such a wide-spread version of goblins is their versatility as Kobolds can live on ships, in mines, and even human homes. Their appearance changes to fit their locale of choice. However, most Kobolds choose to be ambivalent household spirits where they can help with chores or can freely perform malicious tricks if insulted or neglected.

Hogboon
The Hogboon, or Hogboy, is a very friendly earth goblin. They are so kindly to humans that many people try to claim that they are not goblins at all.However, many tales show that they have a negative side whereby they can be very fickle if the humans refused to share the outputs of the farm with them—whether it be milk, butter, bread, or ale. They would bring ill luck to the farm, sometimes even making the land barren, or causing the death of a particularly disrespectful human who tries to get into his mound for treasure.