Access the ES/AU Battle:
To do this, you first have to beat the game. Then, beat the five Organization XII members (see below). After that, head to Disney Castle and look for a new portal called "Hall of the Cornerstone". There you'll find the secret boss battle.
Where to find Absent Silhouette battles (Organization XII):
| Larxene | Port Royal - Isla de la Muerte |
| Lexaeus | Twilight Town(2nd Time) - The Sandlot |
| Marluxia | Beast's Castle(2nd Time) - Beast's Room |
| Vexen | Agrabah(2nd Time) - Merchant's Shop |
| Zexion | Underworld - Cave of the Dead |
Thanks to Revolution Reader Blutobot!
