SparkMan.EXE

SparkMan.EXE is a electric NetNavi that appears randomly in the Den Tournament from MegaMan Battle Network 4. His operator is Joumon Teruo, and he cheats to win by changing Lan's Chip Folder in his PET, but Lan fix the problem with the help of Joumon grandfather, the chief of JomonElec, and defeats him.

Anime
In the anime MegaMan NT Warrior, SparkMan appears as one Darkloid in Axess. The first aperance of SparkMan is when Lan Hikari, Chaud, Dr. Hikari and Dr. Regal are studying one of Nebula's Dimensional Area Generators. Chaud and Lan battle him after he activates the generator. However they lose because the generator is sucking MegaMan and ProtoMan's energy cancelling their Cross Fusion. He reappears as "Zoano SparkMan" in Beast.