"Each of the three themes has Tetsuya Nomura's character designs for the heroes and villains in the game. We have separate themes for FF (Warrior of Light and Garland), FFII (Firion and Emperor Palmecia), and FFIII (Onion Knight and Nipple Queen Cloud of Darkness).
We're not sure if Square Enix will eventually release custom themes for the other FF games in Dissidia. Maybe we'll see them follow through with the rest of the characters. It'd be cool too if we could eventually have a Cosmos army theme with all the good guys, and another one for Chaos' army with all them baddies."