Koopa Clan

The Koopa Clan is Bowser's personal army, consisting not only of Koopas, but of countless other creatures and foes as well. They all play their part in assisting Bowser's efforts to take over various lands—mainly the Mushroom Kingdom—and standing in the way of Mario and his allies during their quests, showing admirable devotion to their leader and his motives. This holds true in the "Dimension" saga also, as the Koopa Clan continues to assist Bowser, even if they aren't entirely aware of what is going on.