Infinite, Sonic Wiki Zone
Kitsunami the Fennec, Sonic Wiki Zone
Stealth the Hedgehog, Sonic Wiki Zone
Sonic the Hedgehog (film) - Wikipedia
Super Sonic (lost build of cancelled Sega CD port of Sega Genesis platformer Sonic the Hedgehog 2; existence unconfirmed; 1992-1993) - The Lost Media Wiki
Sonic the Hedgehog (Sonic the Hedgehog (2006)), Sonic Wiki Zone
Sonic Spinball, Sonic Wiki Zone
Metal Sonic, Sonic Wiki Zone
Sonic the Hedgehog 2 (film), Sonic Wiki Zone
No Zone, Sonic Wiki Zone
Sonic Rush, Sonic Wiki Zone