You can't play Kingdom Hearts Final Mix after beating the regular Kingdom Hearts games. They are separated and needed to be bought if want to be played.
No, just beat Melifecent
Kingdom Hearts 1: Beat Cerberus in the hades cup Kingdom hearts 2: Complete the Pride Lands for the second time
No you cant, not even in theJapanese final mix version , an example of someone who is or13 but cannot be fought in kh2 is maruxla (uses a rose scythe main boss of kingdom hearts chain of memories (sora's story).
After you beat the Parasite cage once.
If you are talking about Kingdom Hearts, then after that you go anywhere you haven't visited yet.
Beat the final boss.
No, just beat Melifecent
Yes, after you beat the Neverland world, you can get it that way for Kingdom Hearts I. In Kingdom Hearts II you would have level up Final Form at level 4.
Beat the entire game, then I believe you can be the final fantasy characters in a tournament
Kingdom Hearts 1: Beat Cerberus in the hades cup Kingdom hearts 2: Complete the Pride Lands for the second time
Play Kingdom Hearts 2 and wait until Kingdom Hearts 3 comes out. Hope that helps! =D
Yes kingdom hearts is very popular, it is mostly popular with people who play ff (Final Fantasy) It might even beat ff, i think that would ever happen but you never know :].
By attacking her.
You have to find lots and lots of heartless.
Fight.
You have to beat Ansem
No