Of Ancient Greek origins, The ''Cacodemon'' (often spelled Cacodaemon) was seen as the opposite of the previous discussed Agathodemon (which were by design, Good(. As such, The Cacodemon was Evil. Often, the mental condition which would become known as Insanity (or related Mental Disorders) were ''blamed'' on possession by a Cacodemon. Their exact creations are somewhat obscured as most Ancient Greek Gods were associated with Nature and The Elements. Cacodemons were also used as Antagonists in Medieval Literature.