User blog comment:Time Biter/SNN LOST: PART 1/@comment-4008402-20140105230258/@comment-477304-20140105235245

Not exactly, Axel is a Nobody; When people in the Kingdom Heart universe, if a person's heart is overcome by darkness, they become a heartless, and if their will and body is strong enough, their body lives on, becoming a Nobody.

If a person's heartless is destroyed and then their Nobody is destroyed afterwards, that person will return as a complete being. This happened in the Kingdom Hearts series with Axel, who became the complete being, Lea, after he was destroyed.