Thundermon

Thundermon
Thundermon is a Mutant Digimon whose name and design are derived from thunder and ball lightning. Also known as the "Digimon Dynamo", it is a Mutant Digimon that is thought to be a member of the Mamemon-species. Its tiny body has the properties of a magnet, and is always clad in electricity and discharging lightning.

Digimon Adventure 02
Cody and Digmon encountered a Thundermon in the sewers underneath a village of Punimon. It attacked Cody and Digmon and one of its attacks reverted Digmon back to Armadillomon. When Thundermon caused the sewers to collapse, Armadillomon digivolved to Ankylomon and Thundermon could not penetrate him. He was however too fast for Ankylomon and was able to throw Cody up into the air. However the DigiDestined was saved by a mysterious Insect Digimon which then destroyed Thundermon after a short battle. It then turned out that the Insect Digimon was in fact Stingmon, the digivolved form of Wormmon. During the battle against Golemon, it was realized by T.K. that Thundermon was made from a Control Spire by Arukenimon. Later on, two Thundermon were seen during the final battle against MaloMyotismon.

Digimon World 3
Thundermon can be found in Asuka's West Sector, in Dum Dum Factory. In the PAL version of the game, Thundermon can be found in Amaterasu's Circuit Boards underground, once Galacticmon has been beat. It is also available as a White Champion Card with 12/10.

Digimon World Dawn and Dusk
Thundermon (known as Thunderballmon in the games) digivolves from Kokuwamon at level 33 with 460 Machine Exp, and can digivolve to Mamemon.

Attacks
 * Thunder Ball: Fires spheres of discharged electricity as much as 10 million volts at opponents who are coming to attack it.

Thundermon X
A Thundermon that carries a X-Antibody.

Digimon World Championship
Thundermon X, here named Thundermon, digivolves into BigMamemon with 40 Machine AP, Knightmon with 8 battles and Mamemon passing time.

Attacks
 * Thunder Ball
 * Thunder Bomb

Variations / Subspecies
 * Thundermon