Digimon, short for “Digital Monsters”, is a Japanese media franchise encompassing virtual pet toys, anime, manga, video games, films and a trading card game. The franchise focuses on the eponymous creatures inhabit in “Digital World”. It is a parallel universe that originated from Earth’s various communication networks.

Digimon hatch from eggs called Digi-Eggs. They age via a process called “Digivolution” which changes their appearance and increases their powers. The effect of Digivolution is not permanent. Digimon who have digivolved will revert back to their previous form after a battle or if they are too weak to continue. Some are feral in nature, but most possess large amounts of intelligence and human speech. They are able to digivolve with the use of Digivices that their human partners have. In some cases, the Tamers had to find some special items such as Crests and Tags. So the Digimon could digivolve in another stage called Ultimate then Mega.