Doctor Robotnik (ドクター・エッグマン Dokutā Egguman?, lit. "Doctor Eggman") is the main antagonist in Sonic the Hedgehog: The Movie. He is a human scientist who lives in the Land of Darkness on Planet Freedom, and is the arch enemy of Sonic the Hedgehog. Obsessed with world domination, Robotnik's ambition is to destroy the Land of the Sky and establish himself as the undisputed ruler of the entire planet, with the President's daughter, Sara, as his queen. From the capital of his empire, Robotropolis, Robotnik has launched many evil schemes to conquer the world, but has been repeatedly stopped by Sonic and his allies.