A zone on Mobius that has thrived since the downfall of Dr. Robotnik. The Eldorado Zone is a pristine city and regarded as the height of society. Most of the citizens here are exceedingly wealthy due to the massive diamond deposits located in the underground caverns beneath the city. Unfortunately, this has given many of the citizens a superiority complex and they regard themselves all too highly, looking down upon the less wealthy outsiders.
The wealth of the zone has made them a target of numerous criminals, such as The Leaf, Loot the Treasure Seeker, and Bleed. Tails has been the main hero who has protected the Eldorado Zone.