How do you be sonic in super smash brosmelee

on melee you can only be sonic by a hack and no other way i hear the hack causes the game to crash every time u turn it on anyway brawl is the only super smash game with sonic so don't belive anybody who says who says they cn get sonic 4 u trust me if there was a way to get sonic i would know cause i am a HUGE sonic fan. hope i helped:)