Alternate-dimension Mobius

The Alternate-dimension Mobius is a dimension created by the Oracle of Delphius to show the Sonic Underground what happens when power corrupts. It is where the The Royal 'Corrupt' Hedgehogs rule with iron fists, and where Good Robotnik resides to take them down.

History
Not much is known about this place, but what is seen appears to be a version of Mobotropolis made in the image of the three hedgehogs. In one area of town is the Royal Palace, an enormous palace (clearly unlike the one in "Wedding Bell Blues") with a golden front gate with designs resembling hedgehog quills. SWATbot patrol every section of the city and serve as guards to the royals, and the citizens live in abject poverty thanks to their rulers' cruel and selfish acts.