Glitch: Change the story
When you encounter Monstro, you can actually leave at any time(WARNING: you will not get high jump!). After you get out, go to Haloween Town or Atlantica and continue the story. Beat Neverland and go to Hollow Bastion where you get to battle Riku. He is completely engulfed by Ansems power at the end of the battle. Now head back to Monstro. When you meet Riku there, what he says is slightly diferent and he doesn't help you with the Parasite Cage battle.
Added by: cheesemonkey Jan 21st 2007, ID#25295