BlackWarGreymon is the virus counterpart of WarGreymon. Like WarGreymon, he is also equipped with the Dramon Destroyers, the gauntlets of which enable BlackWarGreymon to cut through almost anything, and incredible physical strength. He is also equipped with the Brave Shield, but unlike WarGreymon's, there's no Crest of Courage on his.

BlackWarGreymon is infamously feared as the "Black Dragon Warrior". It is unknown why he became a virus type. His heart is black but he hates those that are cruel to others, and does not consider vulgar virus types his allies.