Armageddemon

Armageddemon is an Unidentified Digimon whose name is derived from, the location of the final battle between good and evil prophesied in the Bible. It is a Super-Ultimate Digimon that was born when Kuramon fused in large quantities, causing a mutation. Diaboromon had the ability to make many copies of itself, but they were characterized by having lesser abilities than the original possessed. However, by producing Kuramon in large quantities and then fusing them, it did not disperse its abilities, but instead was able to attain power greater than Diaboromon by condensing them into one being. Also, as a Diaboromon-species Digimon, it is a special Digimon that is affiliated with neither light nor darkness.

Digimon Tamers: Brave Tamer
An Armageddemon is in 's party.

The Armageddemon card, titled "Armageddon Fire", is a Rank 6 card which teaches the Armageddon Fire technique. Armageddon Fire deals Virus-type damage to all enemies.

Digimon Savers 3D: The Digital World in Imminent Danger!
Armageddemon is absorbing Digital World's data via a black hole but is defeated through the efforts of Calumon, GeoGreymon, and Gaogamon.

Digimon World 3
Armageddemon appears in the opening video, and can be fought near the end of the game. Excluding five rare Digimon cards Armageddemon is the second strongest Digimon card after Imperialdramon Paladin Mode. Armageddemon is a black Mega Digimon card that has 65/62. Also, in the PAL version of the game, it is the third Digimon Kurt has, with an approximate 7500HP.

Digital Monster D-Project
Armageddemon digivolves from MetalTyrannomon.

Digimon World DS
Armageddemon appears as a boss which makes up 2 zones, guarding the warp to the final boss, Chronomon DM.

Digimon World Dawn and Dusk
It dwells in the exit hall of the Magnet Mine.

Armageddemon can DNA digivolve from Infermon and Diaboromon, if the base Digimon is at least level 81, with 480 Defense, and you must have previously befriended a Kuramon.

Digimon Masters
Armageddemon is a Burst Mode-level Mercenary Digimon which has a Riding Mode. Armageddemon digivolves from Diaboromon, once the "Black Tentacle" has been applied to it. It can also be summoned by the Black Tentacle for the Omni Quest.

Attacks
 * Full Scale Attack (Black Rain): Fires energy shells from its back into the sky, which fall like rain as scattered beams.
 * Destiny Destroyer (Ultimate Flare): Emits a destructive energy wave from its gaping maw.