During the period when Dr. Eggman's Operation: Clean Sweep altered reality and reshaped Mobius, it was identified by Sonic the Hedgehog and Tails as one of Eggman's bases, but was passed over as they flew by in Sonic's biplane, the Tornado, after they spotted Eggman departing from it in a shuttle craft heading for the Death Egg. (StH: #229)