Going to stop hijacking the General Project thread now... here's the pictures you've already seen in that thread: And now for another addition... I wonder what this could be for?
So, Carnival Night variant of the Sonic Advance boss and what I can only guess is Sonic Heroes 3 and Knuckles perhaps? Cool stuff, I'm glad to see you're working on this again. I'm looking forward to playing it and seeing what you do for the game.