A demon (from Koine Greek δαιμόνιον daimónion) is a supernatural and often malevolent being prevalent in religion, occultism, literature, fiction, mythology and folklore. .

Source: Demon | Gikipedia | A demon (from Koine Greek δαιμόνιον daimónion) is a supernatural and often malevolent being prevalent in religion, occultism, literature, fiction, mythology and folklore