User blog comment:PKMNthehedgehog/Vote for greek mythology!/@comment-1865849-20110816183241/@comment-115265-20110818005345

In Archie and several other continuities, Sonic is indeed Mobian.

But in the games, as of Sonic Unleashed, the planet has been retconned to Earth, making Sonic an Earthing.

Nevertheless, it's true. Sonic is Sci-Fi. It's also Fantasy.