Goblin

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.