An imaginary being is a creature that exists only in the imagination, often appearing in literature, art, and mythology. A SPRITE is a type of fairy or supernatural being in European folklore, typically depicted as a small, delicate, winged creature. A GREMLIN is a mischievous creature that is said to cause trouble for people, especially when it comes to machines and other technology. An ELF is a mythical creature from Germanic mythology, usually depicted as a small, human-like figure with pointed ears and magical powers.