Armageddemon

Armageddemon is the Digivolve for of Diaboromon. He only made one appearance, in Digimon 02; Revenge of Diaboromon. The group of Kuramon combined into Armageddemon at Tokyo Bay. His sheer size is noted as being so large, he can't even be returned to the internet. He confronted Omnimon (the mega digimon formed when Agumon and Gabumon warp DNA digivolve), who stabs a hole in Armageddemon's forehead with his Transcendent Sword and blasts the inside of his mouth several times with Supreme Cannon. This proved to be a mistake, for it allowed Armageddemon to release his Destiny Destroyer at point blank range upon Omnimon. After defeating Omnimon, he also made short work of Imperialdramon Fighter Mode. The combined power of WarGreymon and MetalGarurumon created the Omni Sword, reviving Imperialdramon and creating Imperialdramon Paladin Mode whose Omni Sword attack ultimately killed Armageddemon, releasing all the Kuramon's who were forever sealed within the Omni Sword, ending Diaboromon's rampage.