The Grandmasters are a group of High Ranking officials that are part of the Eggman Empire, they each lead a Dark Egg Legion chapter somewhere on Mobius and anatagonize their local Freedom Fighters. Grandmasters were formerly exclusive to the Echidna's Dark Legion (and it's later subdivisions: the Flame Legion and the Frost Legion), and their was only one at any given time until the Legion joined the Eggman Empire. In the Eggman Empire, the Grandmasters succeded the Sub-Bosses and preceded the Egg Bosses.