Digimon

Digimon (デジモン Dejimon^?), short for "Digital Monsters" (デジタルモンスターDejitaru Monsutā^?), is a Japanese media franchise encompassing digital toys,anime, manga, video games and videos. The franchise's eponymous creatures are monsters of various forms living in a "Digital World", a parallel universe that originated from Earth's various communication networks. Throughout the series, the digimon have a tendency to cross over into the human (real) world which usually leads to destruction of some form. In every season, the digimon are discovered to have a strange connection with human children only. These connections have been identified most commonly as the basic human emotions but also as the individual characteristics or personalities of the characters. By using the power of human emotions, digimon can become stronger and digivolve into more powerful form. While the weaker forms all have the same names, each season introduces a new "god-tier" form.

The most common evolution tree: In-training > Rookie > Champion > Ultimate > Mega

Digimon Adventure: Mega > Fusion (with the creation of Omnimon).

Digimon Adventure 02: Ultimate > DNA Digivolve into Mega (with the creation of Paildramon and later into Imperialdramon).

Digimon Tamers: Ultimate > Biomerge-Digivolution (with creation of Gallantmon/Dukemon).

Digimon Frontier: Combination of all twenty legendary spirits > Susanoomon.

Digimon Savers: Mega > Burst (ShineGreymon Burst Mode).