What Heartless from previous games do you want to appear in KH3?

Sorry, over the past month, I've been extremely confused about this topic. I use to think what you're saying is true, but many people told me otherwise and I was left confused.

I think I finally completely understand it now though.

Pureblood Heartless are the darkness inside someone's heart that comes out when someone's heart leaves their body or is destroyed. Pureblood Heartless can also be created from part of someone's darkness coming out. So, Riku made some of the darkness in his heart come out which formed into AntiSora.

Emblem Heartless were first originally created by Terra-Xehanort's machine that makes hearts get consumed by darkness by force. Emblem Heartless are more like hearts trapped in a shell of darkness and Purebloods are the darkness of someone's heart animated. When an Emblem Heartless makes a heart fall into darkness by force, that heart also turns into an Emblem.

Okay, now I have a few questions.

  1. So, what happens when a Pureblood Heartless gets to someone's heart? When an Emblem Heartless consumes a heart, that heart becomes an Emblem Heartless. When a Pureblood Heartless consumes a heart, does it also become an Emblem Heartless because it's being forced to fall into darkness? If so, then how come no Emblem Heartless existed before Terra-Xehanort created that machine?

  2. Vanitas is the darkness of Ven's heart. Why isn't Vanitas considered to be a Pureblood Heartless then?

  3. When Scar turned into a Heartless, he was a Pureblood Heartless. What about the Ghosts of Scar? Those are created by "the evil in Scar's heart". Does evil = darkness? Does this mean that the Ghosts of Scar were Pureblood Heartless? If so, then why did they become an Emblem Heartless when they formed together?

  4. When Terra-Xehanort stabs himself in the heart in BBS (the part where Aqua saves him from the Realm of Darkness), how come he fell into the Realm of Darkness? Shouldn't his body have turned into a Nobody and the darkness in his heart become a Heartless?

/r/KingdomHearts Thread Parent