http://www.streetfighter.com/us/characters
There are 35 characters in the game and there is no need to unlock any which is good. However, there are many characters that I really like that are not in the game. It would be great if Charlie (way better than Guile), Alex, Yun, Yang, Oro, Karin (Alpha 3), Juni (Alpha 3), and Juli (Alpha 3). I don't know why sucky character like Dudley, T-Hawk, Ibuki, Guy, E. Honda, and Makoto are in the game instead of the great ones. One more thing that I am disappointed of the game is none of the fighter is Canadian. It's not that I have anything against characters of other nationalities, but it's unfair that there is no representation for Canada since we buy lot of their games. Anyway, I just bought the game through Ebay (still haven't receive it) for my PS3 for about $40 including shipping which I think is very reasonable.
Do you like Super Street fighter 4?
Are you going to buy one??