You need the homebrew channel
You can't, you can only unlock him in SSBB.
He appears as an assist trophy when you unlock Sonic.
No, only sonic
you can only unlock him in ssbb but if you have ssbb heres how to unlock him: beat classic mode 10 times but he does not just join you after you do this after you do this you have to beat him
You can only unlock Sonic on SSBB no you can get super sonic shadow and you can get their rel form were their not super
Unlock him in SubSpace or battle 300 vs matchs
he is as an assit trophy, all you need to do is unlock sonic
theres no hack
Sonic is in SSBB.
in sonic adventure dx you can only unlock metal sonic by collecting 130 sonic emblems.
You can't unlock Shadow in SSBM. You can unlock Shadow in SSBB though, he is an assist trophy. In SSBB, you can use a texture hack on Sonic to make him look like Shadow and you can play as him.
You can unlock shadow but only if you can play as sonic 735 times without loosing 1 match