Spoiler about the nobodies!!!

Xigbar: “Oh? Thanks to your heart, everything’s gone according to our plan. The heart’s a troublesome thing, isn’t it?”

Sora: “Don’t you guys have hearts too? Axel, Roxas, Namine, and that girl—in the emotions Roxas felt, everyone laughed, became angry, and became sad. The tears they shed are proof of that.”

Xigbar: “You finally realized it.”

Xemnas: “Correct. It is not as though our hearts had disappeared.” [Insert a bunch of technobabble about Heartless and Nobodies and how this works I don’t feel like translating]

Sora: “Then... then why did you trick them into thinking they had no hearts!?”

Xigbar rambles about Xemnas/Xehanort’s true plans for the Organization, which basically involves using them as tools for Kingdom Hearts, and... making all of the members into Xehanort? Sora is appalled that they would trick their comrades for such a thing, and calls Xigbar out on that meaning Xigbar as Xigbar will disappear, too, and it zooms in on Xigbar’s ginto eye, and he states that he’s already half-Xehanort.

Otherwords they all had hearts, what do you think on this matter now?