Kingdom Hearts II/Abilities

Drive/Form Abilities
And to let you know:
 * Valor Form is available when you upgrade your clothes
 * Wisdom Form is obtained by clearing Timeless River
 * Master Form is obtained by talking to The King before going into Ansem's Study where the computer is.
 * Final Form is made available by reaching to the top of the World That Never Was. It is easily obtained by going into the Cerberus Cup (Olympus Coloseum) and turning into Master Form. If your clothes don't turn black and white, reset the challenge and turn into Master Form until you sucessfully turn into Final Form. Also it will be available under Command < Drive < Final

It is well worth equipting the abilities