Speedy Dave

Speedy Dave, known as Daisuke Hayami (速見ダイスケ) in Japan, is the operator of QuickMan.EXE and was a member of Gospel in MegaMan Battle Network 2 that attempted to explode the Okuden Dam with four bombs because people were littering (although that's probably a lie because he's working for Gospel), but was stopped by Lan.

Mega Man NT Warrior
Speedy Dave was featured in an episode of the anime. He was a childhood friend of Sal's, and loved nature just as much as she did. However, he sought to protect nature so much that he joined Gospel to do it. He was ordered by Gospel to destroy the dam, and did so by attempting to reverse the spinning of the turbines.