Robotnik's Retreat is a fortified bastion belonged to the dastardly evil genius Dr. Robotnik and a location that appears in the Sonic the Comic series published by Fleetway Editions. It is an old fortress in the mountains, far north of the Metropolis Zone. It is unknown how many times Robotnik has visited, but it has been openly stated that when the dictator ruled Mobius, one of his main reasons for going was to get away from Grimer. It is unknown what has become of the remains of Dr. Robotnik's own Retreat's since then.