Board Thread:General Discussion/@comment-26167440-20160111225919/@comment-679780-20160130203411

The transformation is triggered the same way Chaos Control works. Super Transformation is the same nature as most of the "Chaos powers" you can do with the emeralds. He just needs all the emeralds than just one of them.

"Varies"? From Dreamcast to Modern, the majority of locations Sonic visit is populated sorely by humans. Almost all NPCs in the Sonic series are humans. Sonic Unleashed prooves that like our planet Earth, Sonic's Earth is still dominated by humans as Sonic visits many different villages, towns and cities where just humans live. Sonic Unleashed is his first world adventure in yet throughout the game he only meets Tails and Amy throughout his international journey. You would of thought there would of been some Mobian civilian NPCs at least, but the majority cast in the game were humans.

Sonic Adventure also shows Station Square as a human dominant city while Mystic Ruins have human archeologists. Only the playable characters, Tikal and her tribe and Chaos were the only non-humans in the game.

Well I have three possible reasons why the Chaos Emeralds return to the Special Zone after awhile.
 * When all the seven emeralds are gathered, they become instable due to the energy give off is more than each other can handle which cause themselves to warp back to the Special Zone and spread out. Similar to Sonic the Comic lore or in Sonic X when the emeralds give off surges of energy when near each other.
 * While the power of the Chaos Emeralds in unlimited, excessive use of the Chaos Emeralds will cause them to become instable, in which they will warp back to the Special Zone where the chaotic environment will stabalize them. Super Sonic can use them once or a few times during games (depending on which game it is) but somewhen after the credits roll and before the next game, the emeralds are gone (Sonic Unleashed the acception).
 * The Special Zone is an ideal place of storage for the Chaos Emeralds, so they are purposely put back there by Sonic or Dr. Eggman in between games where they'll be safe and secured. After awhile the emeralds find there way back on Earth, unless Sonic or heroes run the Special stages to collect them.

The Special Zone is the Chaos Emeralds "happy place", probably because they find stability after fuxations of power usage or excessive use. The only other place where Chaos Emeralds are "happy" would be with the Master Emerald.