Sonic Spritesite. Many sprites that are unavalible through normal gameplay, such as his climbing, and "hold" sprites. (Which meet up and match Mighty's sprites from Chaotix PERFECTLY) Courtesy of: Kojichao
Tails Spriteset. many unseen sprites again, including throwing animation, and flying. What's interesting is tails has "tired" animations like he has in Sonic 3 after carting Sonic around. Courtesy of Kojichao
Arms spriteset. Courtesy of: Kojichao
Random sprites. Some obviously unseen to those who have played this. The word "Combi" can be found, which proves the Combi idea was called that at the point this rom was compiled. Courtesy of: Kojichao