Small, usually green (although red and brown varieties are common) bipedal creature, the goblin is possessed of a keen cunning, and although not often very wise, goblins tend toward the highly intelligent.
Goblins can be highly malicious, coming from a very competitive society. Some groups of goblins work together strongly under great leaders, whilst others may simply bicker and squabble amongst themselves.
Goblins have a sharp and sometimes biting sense of humour, and their simplistic logic often makes for hilarious situations - however, it may also provide the goblin a mechanism unthought of by more logical and less chaotic species.
Possibly related to orc