Imp

An imp is a mythological creature similar to a fairy or demon, usually described in folklore and superstition.

Imps are usually described as mischievous more than a serious threat, and as lesser creatures, not important supernatural beings. The small helpers who attend the devil are sometimes described as imps. They are usually described as small and very active.

Imps were the common name given to familiar spirits that served witches in the Middle Ages. Imps were usually kept inside artifacts such as gemstone pieces or vials and summoned for service with magic.