Digimon Adventure 02: Revenge of Diaboromon

Revenge of Diaboromon (also known as Diaboromon Srikes Back in the original Japanese version), is the fourth movie of the Digimon franchise. It is also the second of two movies that tie into Digimon Adventure 02, and the second autonomous Digimon film to be dubbed in American English.

Overview
In this movie that takes place a year after MaloMyotismon's defeat, the DigiDestined go up against Diaboromon again. Tai and Matt head back to the Internet to deal with him with Omnimon, while the younger DigiDestined go to deal with the rampage of a swarm of Kuramon (Diaboromon's Fresh form). With the help of Angemon and Angewomon (with T.K. and Kari), Omnimon was able to destroy Diaboromon again, but it turned out to be a trap, as his destruction allowed many more Kuramon to go to the Real World. Things go out of control when the Kuramon in the Real World merge to create a Mega level called Armageddemon, a more powerful and nigh invincible Mega in Diaboromon's evolutionary line. It is so powerful that neither Omnimon nor Imperialdramon were able to defeat it on their own even with the Giga Crusher attack which eradicated MaloMyotismon. In the end, Omnimon gives his energy to Imperialdramon Fighter Mode after the latter is injured in a counterattack, powering him up to Paladin Mode. Using his Omega Blade attack, Imperialdramon is able to strike down Armageddemon, splitting him back up into the Kuramon. With the help of the energy from the DigiDestined Digivices and the cell phones from the other kids of Japan, the Omega Blade is powered up, allowing all of the Kuramon to be destroyed for good.