u cant they dont have the full version yet
Chat with our AI personalities
actually in demo vo.8 you can unlock captain falcon by winning a match with everybody
To unlock black mage you have to play with seven characters in the seventh battle chose your best character to unlock him
You cannot unlock vegeta in ssf2. You might get him in the full game
THIS IS YOUR LUCKY I KNOW WHEN ITS COMING OUT ITS ON MAY 24 2010 AND A LITTLE OTHER ANSWER.....THE CRERATOR OF SSF2 SAID HES GOING TO BRAWLIFY THEM SO HOW YOU UNLOCK CHARACTERS ON BRAWL THATS HOW YOU UNLOCK THEM IN SUPER SMASH FLASH 2! OR DOWNLOAD THEM SOME CHARACTERS IN THE GAME! by volt
now its a demo you can only unlock black mage now by brawling 10 times. when other versions come out, you can unlock other characters.