MetalSeadramon
From Multiversal Omnipedia
The first of the Dark Masters, MetalSeadramon is a half-robotic dramon Digimon. His servants included Scorpiomon, as well as an armada of Divemon.
He killed Whamon while attacking the Digidestined. Finally, Izzy discovered that WarGreymon's swords had an advantage against dramon digimon. Thus, WarGreymon used his blades to destroy MetalSeadramon.
MetalSeadramon had a very violent personality. His main attack is River of Power. A Mega-level Digimon, MetalSeadramon digivolves from MegaSeadramon.