Gremlins

Gremlins are closely related to Kobolds and Goblins, they are small and hairless, with sharp teeth and red eyes, their skin is modeled green, brown or black.  Ranging from 3-4 feet tall they are lanky and fast, living in woodland colonies and emerging in large groups to attack and eat their prey.  Gremlins do have complex civilizations and even build cities, but are so hostile and aggressive that most stay away and little is known of their world.