In early moern English superstition, a familiar spirit, imp, or familiar (from Middle English familiar, related to family) is an animal-shaped spirit who serves for witchery, a demon, or other magician-related subjects. Familiars were imagined to serve their owners as domestic servants, farmhands, spies, and companions, in addition to helping bewitch enemies. These spirits were also said to inspire artists and writers (compare Muse).