How do you unlock the icons in street fighter 4?

Answer 1

To release more characters, you must beat story battle under Medium difficulty:

1) Jin Kazama (new moveset, Hwoarang and Kazuya's final boss) - Beat the game with Hwoarang, Xiaoyu, Kazuya, Steve, Christie or Law

2) Lee Chaolan/Violet - Beat the game with Kazuya, Paul, Steve, Law or Jin

3) Nina Williams (Steve's sub-boss) - Beat the game with Yoshimitsu, Marduk, Kazuya, Steve, Christie, Eddy (if unlocked), Jin of Violet

4) Lei Wulong (and Eddy Gordo) - Beat the game with Hwoarang, Kazuya, Paul, Steve, Christie, Law or Jin

5) Bryan Fury - Beat the game with Yoshimitsu, Kazuya, Paul, Steve, Christie, Eddy (if unlocked), Jin, Lee (if unlocked), Violet, Nina or Lei

6) Julia Chang - Beat the game with Yoshimitsu, Marduk, Kazuya, Christie, Eddy (if unlocked), King, Jin, Lee (if unlocked) or Violet

7) Kuma/Panda (and Miharu Hirano) - Beat the game with Xiaoyu, Kazuya, Paul, Jin, Lee (if unlocked) or Violet

8) Heihachi Mishima (final boss for most characters) - Beat the game with the character (including Miharu, Eddy and Lee: if unlocked), except Marduk and Law

9) Combot (replaced by act as Mokujin, Tetsujin and Unknown, Lee/Violet's final boss) - Beat the game with Yoshimitsu, Kazuya, Law, Jin, Lee (if unlocked), Violet, Lei or Heihachi

Note: Miharu and Eddy are the only 2 characters that are PS2 exclusives.

Answer 2

read the complete details here - http://j.gs/1010114/sf4-unlock-characters