Organization XIII Device

The Organization XIII Devices is an "item" which are used by Xion to power herself with a different form and weapons in her multi-form boss battle.

Roxas first sees one when he is ordered to place one in the Cave of Wonders Lamp Chamber in Agrabah. Soon after, he is attacked by a Land Armor, which he assumes is trying to destroy the device. The device is revealed to use the lingering power of Sora's true memories to grant power to Xion to eliminate and absorb Roxas.

There are three of these devices placed in three worlds that Roxas is transported to during his fight with Xion. The first one is placed in the Bizarre Room in Wonderland. The device gives Xion large, colorful wings and a huge, orange and red, intricately-shaped sword. It is unknown who placed this device.

The second one is placed in the Manor Ruins of Halloween Town. This device gives Xion a large, scythe-like weapon vaguely resembling the Decisive Pumpkin Keyblade or a Chimaera arm. It is unknown who placed this device.

The third one is the one Roxas placed in Agrabah. This device gives Xion a figure with four huge arms, decorated with elegant, gold, purple and red designs. She also has large blades instead of hands, resembling Kurt Zisa.