Complete the indicated map after completing the game to unlock the corresponding character. Note: Pass bills in the Senate to unlock the Extra maps.

Asagi: Extra Battle Six.
Axel: Extra Battle One.
Etna: Extra Battle Four.
Flonne: Extra Battle Two.
Kurtis: Extra Battle Seven (after meeting him several times in Item World).
Laharl: Extra Battle Five.
Raspberyl: Extra Battle Three.
Zetta: Extra Battle Nine.