Sonic is not available in Super Smash Bros. melee. Sonic is available in Super Smash Bros Brawl and can be unlocked in four ways:
Beat Sonic after beating the Classic Mode with 10 different characters
Play 300 matches in Brawl
Play over 10 hours in Versus Mode
Beat the "Subspace Emissary"
Sonic is not a playable character on Super Smash Bros. Melee.
No but you can be sonic on super smash bros brawl
Sonic was not released for Super Smash Bros Melee and is not unlockable.
Get Super Smash Bros. Brawl
Sonic is not a playable character in Super Smash Bros. Melee; only in Brawl. Therefore, he cannot be unlocked in Melee.
no, however you can unlock him in super smash bros. brawl
maybe, because sonic had not truly shined in the Nintendo series when super smash bros melee first came out