Neutral Zone

The Neutral Zone is and alternate zone in which Sonic the Hedgehog and many alternate versions of him ventured into to find a weapon that held the key to defeating Robo-Robotnik. There is no visible surface to stand on in the zone and erases all color except black and white from those who enter it. After retrieving the giant's hand from the zone, the weapon was stolen by Anti-Sonic and everyone headed back to the mobius to face off against the Giant Borg.

Background Information

 * It is questionable is this would really be classified as a "zone" due to it being part of the Cosmic Interstate.