Cacodemon

A cacodemon (or cacodaemon) is an evil spirit or (in the modern sense of the word) a demon. The opposite of a cacodemon is an agathodaemon or eudaemon, a good spirit or angel. The word cacodemon comes through Latin from the Ancient Greek κακοδαίμων (kakodaimōn) meaning an evil spirit, whereas daimon would be a neutral spirit in Greek and Tychodaimon would be a good spirit. In psychology, cacodemonia (or cacodemomania) is a form of insanity in which the patient believes that they are possessed by an evil spirit. The first known occurrence of the word cacodemon dates to 1398. In Shakespeare's Richard III Act 1 Scene 3.Queen Margaret calls Richard a "cacodemon" for his foul deeds and manipulations.

In popular culture

In the popular online game, Anarchy Online, a pet that one of the professions can summon is the Cacodemon.
In the MMORPG Talisman Online, Cacodaemons are one of the types of creature inhabiting the Cloud Mountain area.
Deicide's second album, Legion, contains a song called "Satan Spawn, The Caco-Daemon".
The Mega-level Digimon Daemon of the Seven Great Demon Lords is based on the Cacodemon in both name and design.

Games

In the Dungeons & Dragons role-playing game, Cacodaemon is a powerful Yugoloth (daemon), much like the Baatezu (devils) and the Tanar'ri (demons).
In the first edition of the fantasy role-playing game Advanced Dungeons & Dragons, "Cacodemon" is a seventh level magic-user spell. It was used to summon a type IV, V, or VI demon to the player character's location in the game world. The spell was omitted from the early versions of the second edition of the game, and was later revised in the Planescape product line, in which it could summon a variety of powerful tanar'ri or baatezu. The spell was eventually phased out in the third edition of the Dungeons & Dragons game in favor of a more comprehensive creature-summoning spell.
In fantasy video game Baldur's Gate II: Shadows of Amn, the Bioware Infinity Engine equivalent of the "Cacodemon" spell is known as "Cacofiend".
In third edition Dungeons & Dragons, the (in)famous name-sake beast itself ("Cacodaemon") was later revised into the "Cacoloth" class of Yugoloth, whose sole purpose is to act as bodyguards and servants for the "Oinoloth" and the "Ultraloths."
In Glorantha Cacodemon is the god of ogres
[http://doom.wikia.com/wiki/Cacodemon Cacodemons] are also an enemy in the Doom series of computer games developed by id software.
In Final Fantasy XI, the Terrestrial Avatar Diabolos uses a special attack called "Cacodemonia."
Kelley Armstrong's Otherworld novels feature cacodemons and eudemons, some of whom have produced semi-human-like progeny; in this context eudemons are not so much "good" as "non-chaotic".
In Wizardry V; Heart of the Maelstrom, Cacodaemons are large red demons encountered on floor 777.

Translation of "Cacodemon"

Czech: Cacodémon, French: Cacodémon, Italian: Personaggi di Doom#Cacodemon, Japanese: カコダイモーン, Swedish: Kakodemon.