(EXTRA NOTE:The Japan version of KH2 has 1 more drive form,1more keyblade,XII data version fights and XII mushroom.You can fight the warrior from kh2 secret ending.
You will get a crown after defeating Enigmatic soldier(secret ending warrior),All XII data version or XII mushrooms.)
FUN FACT:The crown will be on Sora's head wherever you go.
EXTRA REWARDS:When you completed all XII mushrooms go to The Great Mawand 13 mushrooms will appear leaded by the king of them.Then you will be rewarded the secret keyblade.
XII battles:
Larxene:https://www.youtube.com/watch?v=eWae__IdA1E
Marluxia:https://www.youtube.com/watch?v=1GVYRoiHvp0
Axel:https://www.youtube.com/watch?v=gvi7mTAtj1s&feature=related
Leaxeaus:https://www.youtube.com/watch?v=-919Lco4lmk
Vexen:https://www.youtube.com/watch?v=E-ABNv4Zc-o
Zexion:https://www.youtube.com/watch?v=CEM5A5l9kOY[/b][/i]
Roxas is a storyline battle for final mix:https://www.youtube.com/watch?v=PNgZXjwWzyc