How can you get sonic in brawl?
in the subspace emissary when you go to fight taboo you will see a video that introduces sonic. then just beat taboo.
Sonic Smash Brothers is not game title. To unlock Sonic in Super Smash Bros. Brawl: Beat Sonic after beating the Classic Mode with 10 different characters. Beat Sonic after playing 300 matches in Brawl. Beat Sonic after playing over 10 hours in Versus Mode. Beat Sonic after beating the "Subspace Emissary".
Nintendo posted a poll in Japan only on which third party character most people wanted in Brawl, and Sonic won. Nintendo then reached out to SEGA and they made a deal. its simply because sonic was not included in melee. i guess Nintendo didnt even think of adding sonic to the game until they were making brawl or something.