Buy all of sonic's pictures in sonic's room.Try to buy the last one,it's the one on the right side bottom.If you still don't get super sonic then buy super sonic's picture.(agian try to buy the last one.)
Buy all or the last picture for tails in sonic's room.(if you cantv unlock super sonic,big,e-102 gamma,or choa and you bought the pictures i said to buy then you must buy all their pictures as well or juast there last picture.)
This is extremely difficult to do, U must press the buttons clearly and quickly.
First u must have all the secret characters. Then at the character select screen (story mode or versus mode)quickly press L+R, X, YY, B, A, (left on the D-pad). And Ultra Sonic will come running behind them, and pushing them out of the way.
NOTE:Ater entering this code you have no choose but to pick him.
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