The Galaxy Gang (ギャラクシィ・ギャング), G. G. for short, is a gang led by Doc Waruyama. It spreads cyber-terrorism across the world and plans to conquer the entire galaxy.
During each mission, the Galaxy Gang is attempting to do some form of havoc against the world. This varies from attacking a news station, to harnessing hydroelectric power, to even attempting to turn a forest into a completely mechanical entity.
During the game, various cat and mouse materialized programs are seen, but only two Galaxy Gang human members are ever seen, the first boss, and Doc Waruyama himself.