Organization XIII's Replica Data
The Organization XIII Replica Data (XIII機関:再現データ XIII Kikan: Saigen Dēta ) are optional bosses found in Kingdom Hearts II Final Mix at the Garden of Assemblage. Once Sora, Donald Duck, and Goofy reach the Garden of Assemblage, they can access a computer that reveals portals corresponding to each defeated Organization member. The portals are labeled with their member's signature weapon and are arranged in the same manner as the thrones at Where Nothing Gathers. When used, a portal will transport Sora and his friends to a digital copy of the arena in which the member was defeated, where the Replica Data will materialize and attack Sora. In order for a portal to be operational, the Organization member or Absent Silhouette must have been previously defeated; however, the portals for the members fought at The World That Never Was are not operational unless the save file has been cleared. While the battles are extremely difficult, with enhanced stats and attacks, they are the most efficient way of forming Stat Boosts and Lost Illusions.
- Xemnas's Replica Data is fought at Memory's Contortion and the final arena, and relinquishes a Power Boost. Sora's equipment, items, and abilities can be reconfigured between the two rounds.
- Xigbar's Replica Data is fought at the Hall of Empty Melodies, and relinquishes a Defense Boost.
- Xaldin's Replica Data is fought at the Bridge, and relinquishes a Defense Boost. The Beast is not available as an ally.
- Vexen's Replica Data is fought at the 11th Floor facsimile of The Old Mansion, and relinquishes a Lost Illusion.
- Lexaeus's Replica Data is fought at the Station of Remembrance, and relinquishes a Lost Illusion.
- Zexion's Replica Data is fought at the 3rd Basement facsimile of Destiny Islands, and relinquishes a Lost Illusion.
- Saïx's Replica Data is fought at the Addled Impasse, and relinquishes a Defense Boost.
- Axel's Replica Data is fought at the Basement, and relinquishes a Magic Boost. Donald, Goofy, and Roxas are not available as allies.
- Demyx's Replica Data is fought at the Castle Gate, and relinquishes a AP Boost.
- Luxord's Replica Data is fought at the Havoc's Divide, and relinquishes a AP Boost. Donald and Goofy are not available as allies.
- Marluxia's Replica Data is fought at the Station of Oblivion, and relinquishes a Lost Illusion.
- Larxene's Replica Data is fought at the Station of Remembrance, and relinquishes a Lost Illusion.
- Roxas's Replica Data is fought at the Station of Awakening, and relinquishes a Magic Boost. Donald and Goofy are not available as allies.