Next up... Ansem "the Wise." Who has so many opportunities, I'm just going to do it like this and not even bother writing full ones. May have a part two for ones I missed (feel free to point any out), but I think these are most of the big ones.
The Path to Wisdom
"Naminé has served her purpose. However, let us wait at least until Sora has awoken to confirm his memories truly are in order before erasing her. ...On second thought, let's not erase her. If she could return to Kairi the same way Roxas has to Sora, it will likely be better for all involved."
"Riku, you must bring Roxas here. Use force if necessary, but the truth may yet make him our ally against the Organization."
"You see, Riku, I needed someone who could walk in darkness. Then I realized my plans would be for naught if Sora were to be lost, so I collected him from the top of Castle Oblivion first."
"Hi, Riku!"
"No, Ienzo. We're not going to build another laboratory in the basement, the one we already have by the aqueducts is more than sufficient. And we should really begin looking into those strange black creatures that have been turning up."
"Xehanort, I don't believe this is a good idea. I'd like nothing more than to help you regain your memories, but I would not be able to bear it if these experiments were to cause you serious harm. Why don't we first see if anyone recognizes that charm you were carrying? Our new friend, the king, perhaps."
"Braig, you're fired."