Jermlaine

In the Dungeons & Dragons fantasy role-playing game, the Jermlaine, also known as Gremlin, Jinxkin and Banemidge, is a fey. They are evil and fiendish underground dwellers who spend their days sneaking, hiding and plotting to create general badness.

Physical Description
Jermlaine resemble small, mishappen, grey-skinned humanoids covered with warts and pimples and hair, and with grumpy, big-nosed faces. They are very thin-limbed, and have slightly rat-like traits. Their appearance could even be described as slightly cute, however ugly.

Society
Jermlaine dwell underground in large groups, and live only to plot and scheme. With foul dispositions and evil designs, they are also extremely adept at hiding and sneaking. They also seem to have a kinship of sorts with rats; Jermlain groups are often accompanied by up to an entire plague of rats, including a few giant ones, and also, a Jermlaine lurking in the shadows can be mistaken for an oddly shaped, vaguely humanoid rat.

Jermlaine could be compared against kobolds, goblins and troglodytes.