Armagemon

An Ultra Digimon born from a mutation caused by fusing massive numbers of In-Training Diaboromon. Diaboromon had the ability to copy itself en masse, but each copy would be inferior to the original. Still, the creation and fusion of large numbers of its In-Training version condensed its abilities into a single form, giving it power greater than that of a Diaboromon. Also note that Diaboromon-type Digimon are special, affiliated with neither light nor darkness. It uses its special move Black Rain to release energy shells from its back that scatter into the air and rain down in all directions, or Ultimate Flare to fire a beam of destructive energy from its gaping maw.