Folklore beings, such as trolls, are mythical creatures that have been part of many cultures for centuries. They are often described as being ugly and mischievous, and are usually associated with caves, mountains, and forests. In some stories, trolls are portrayed as helpful and wise, while in others they are seen as dangerous and malicious. Trolls are a popular figure in Scandinavian folklore, where they are said to live in the mountains and guard their treasures.