The Riku Mod replaces Sora in the game. Associated with the mod are battle quotes, music, and also Sora replacing Riku. Added as well, we have a custom model for the replacement of the possessed Riku battle and also the first battle with Riku at Hollow Bastion. 

Please note that the model replacing Riku, Sora, is going to show clipping and some parts of the model see-through. I cannot edit the model as editing the model again results in corruption. This cannot be fixed. 

Alongside with this mod, Dark Riku replaces Halloween Town with the possessed quotes with him. Riku is also in Atlantica.

A majority of the music has been replaced with world themes/battle themes from Kingdom Hearts 2. Wonderland and Monstro do not have their music replaced (no idea what would fit there).