Armageddemon

Armageddemon is a unique Digimon that was the result of an unbelievably large amount of Kuramon coming together, fusing and mutating. A brutal Digimon with an unknown attribute, his power greatly surpasses Diaboromon's, and even that of both Omnimon(who eliminated millions of copies of Diaboromon in the last movie) and Imperialdramon.

Description
He resembles a very large Lizard with 6 insectoid legs.

Digivolution

 * Fresh (Baby I) - Kuramon
 * In-Training (Baby II) - Tsumemon
 * Rookie (Child) - Keramon
 * Champion (Adult) - Chrysalimon
 * Ultimate (Perfect) - Infermon
 * Mega (Ultimate) - Diaboromon
 * Mega (Ultimate) - Armageddemon

Attacks

 * Destiny Destroyer (Ultimate Flare): Armageddemon fires a wave of destructive energy from his mouth.
 * Full Scale Attack (Black Rain): Launches destructive projectiles from his back.

Revenge of Diaboromon
After Omnimon defeated Diaboromon for the 2nd time, Diaboromon split into many Kuramon and appeared in the Real World to rejoin the other Kuramon there. All the Kuramon soon gathered at Tokyo Bay near the Rainbow Bridge and merged to form Armageddemon. He decisivly defeated Omnimon and Imperialdramon Fighter Mode. Then Imperialdramon was energized by the Omni Sword to become Imperialdramon Paladin Mode. He then defeated Armageddemon, reverting him to a lot of Kuramon and sending them back to the Digital World.

Trivia

 * He was named after "Armageddon", the Biblical place where the final battle between good and evil is prophesied to be fought at the end of the world.