Goblins, also known as Gong Orcs, are a fictional sapient species seen in J.R.R. Tolkien's Works.
The word "goblin" is, originally, a derogatory terms Hobbits use for Orcs. However, it has come to refer to a special breed of orcs, the results of the remains of the Dark Lord Morgoth's orc army hiding under the Misty Mountains in a cave called "Goblin-Town" after their lord's defeat. After centuries of living inside and inbreeding, Morgoth's orcs had become small and savage, and were ruled by a fat and cruel king called the Great Goblin, who was the largest and cleverest one among them.
Tolkien's literary Goblins were the inspiration for the Goblin seen in the 1977 animated adaptation of The Hobbit.