Overlord is a title that appears in the Sonic the Hedgehog comic series and its spin-off comic series published by Archie Comics. It is a former designation given to the leader of the Overland and the Overlanders.
Not much is revealed about the carriers of the Overlord title. The first one to carry this title was recognized around the time of the founding of the Kingdom of Acorn while the last to carry it was Charlemagne. The title itself has seemingly eased being used following the Overlanders' defeat in the Great War and the disappearance of Charlemagne.