Datamon

Datamon is a fictional character in the Digimon TV series. Datamon's first appearance was in Episodes 19 and 20 of the first season ("The Prisoner of the Pyramid" and "The Earthquake of MetalGreymon", respectively). Datamon appeared again in Episode 17 of the fourth season ("Bizarre Bazaar").

Datamon is an Ultimate-level Digimon whose attacks include Digital Bomb and Data Crusher. His attribute is Virus and his type is Machine. He evolves from Cyclonemon, Tuskmon and Deltamon. In the Japanese version, Datamon is known as Nanomon.

Digimon Adventure
Datamon was a wild card who is a sworn enemy of Etemon, ever since Etemon serverly injured Datamon and imprisoned him within his pyramid for years. However, Datamon managed to rebuilt himself over years and used the DigiDestined to free him by offering the Crest of Love he has on his person. Once that was accomplished, he turn on the them and kidnapped Sora Takenouchi & Biyomon with intent to use their power to destory Etemon. But Datamon created a clone of Sora when the original refused to help the revenge-driven villian.

Though he wants to destory Etemon, Data is willing to do all the wrong things in order to get there. But when his revenge plan to use Biyomon and the Sora-Clone to kill Etemon failed, Datamon infected the Dark Network with his Plug Bombs, causing the Network suck in every Digimon in the area and asboeb their data, Datamon was no exception. Though Etemon survived this attempt on his life and was fused unto the DarkNBetwork itself.

Digimon Frontier
A merchant in the Ice Terminal, Datamon obtained the four D-Tectors from the Toucanmon. Though he likes to help Tomoki Himi and Arbormon, it is clear that his motive is simply a desire to make money. At any rate, this Datamon ends up a good guy, for he refuses to help Arbormon after having seen Tomoki's bravery and honesty in the camcoder the Toucanmon bought from Datamon. His assistance turns out to be of great importance, as he gives Tomoki his Beast Spirit. He was also among the Datamon leaving Ice Terminal when the Royal Knights targeted it.