They grow up to 30 cm and are covered with a thick coat of black/grey hair. The Goblin is usually found wearing very dark colored cloths and a tall cap similar to that of the Gnome. They can appear as animals. They have a somewhat bestial or grotesque appearance: their brow is fully covered with thick hair and their mouth is filled with yellowed, crooked teeth. Female goblins are referred to as "hags" or "crones". It is said that they mimic human actions in their sardonic way, twisting human rituals and culture to show the worst aspects. In recent depictions Goblins have been portrayed as green in color. There is no tradition of this practice.
- They can appear as animals.
- They are sometimes said to be mostly invisible to human eye.
- They can weave nightmares out of gossamer and insert them into the ear of a sleeping human.
Tricks : Goblins are pranksters, and are known for rearranging items in the house, tangling horses, banging pots and pans, removing the clothes from sleeping humans, knocking on doors and walls and even digging up the graves to scatter the bones around. Goblins like to borrow horses and ride them all night. If a horse is tired in the morning, it is said a goblin rode it. If a horse is panicking, the goblin is trying to mount it.
Goblin women steal human babies, replacing them with ugly goblin babies. Goblin changelings are sometimes known as "oafs" or "crimbils".
Mine goblins make knocking noises by stricking pickaxes and hammers against the stones. Some miners take the resulting sounds as a sign of good luck, believing they indicate the presence of rich deposits of ore. Other believe that they (Kobolds and Wichtlein) just imitate the miners to fool them. As a death companion he is sometimes accused to cause underground fires or warn for the coming deaths. To avoid the Knockers' wrath, a pastie (traditional miner meal) should be left for them.
- A goblin smile curdles blood.
- A goblin laugh sours milk and causes fruit to fall from trees.