Kingdom Hearts 2 - Triggering Xemnas's Rare "Falsehood" Quote
The quote is at 1:40. Sorry if the music overpowers it. If you can't understand it, the quote is "Sora...Riku...there is falsehood within your hearts. Do you dare...deny it?"
Many people think this quote is unused. I've seen a couple of people say that they've heard Xemnas say the quote after either stalling for a LONG time during the "flying around and surfing on buildings" part, or by falling all the way to the bottom, and I've seen others say that it is completely unused. Wikis and quote videos also state it is unused.
So I decided to test it out myself, and after stalling for about 20 minutes on the third "knock out" (Where I thought the quote might be) I experimented a bit on the second knock-out. The results were favorable, and the quote does indeed exist in the game, at least in the original PS2 release. I'm not sure about the final mix or remastered versions.