dick hes already in the game
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In Sonic Adventure 2 Battle(she is very hard 2 unlock get all rank A's with sonic!)Sonic Adventure DX,Sonic Advance 1 2 and 3(in 1 of them you have 2 unlock her).Sonic Riders.
knuckles in sonic 2 :play sonic 2 and sonic spinball 30 times
Um u cant shadow is not in sonic advanced 2
You don't unlock him! If you unlock Sonic and play as him, Super Sonic is his final smash.
unlock him by shagging the boss