I find it odd that there was no "third being" described in the other ansem reports, and I think I know why.I think it's the third enemy is the human race.
Think of it this way: What are four forms we've seen. Heartless(corrupted heart),nobody(body and soul), humans and released souls. If the soul is released, the body dies and the soul jut becomes a floating ball...thing.(as witnessed in the underworld)
Now, who are the strongest beings? Who are those who are corrupted by darkness as well as be blinded by light? Who has a majority of logical beings? Humans. Humans are the big enemy: the heart just has the passion and the center of instinct, the body is just muscle and bone(essential a shell of a being), and the soul is what holds the two together, along with give some sense of reason. Alone they aren't that strong and can be easily defeated if you give a person a weapon: but together they(like how humans are) they might be strong enough to defeat any other being, and wield the strongest of all weapons(in KH at least) the keyblade. Think of the secret videos. What does the villain wieldA keyblade. And outside of roxas and ansem/riku, can hold a keyblade? Only whole humans.
Think of it this way: What are four forms we've seen. Heartless(corrupted heart),nobody(body and soul), humans and released souls. If the soul is released, the body dies and the soul jut becomes a floating ball...thing.(as witnessed in the underworld)
Now, who are the strongest beings? Who are those who are corrupted by darkness as well as be blinded by light? Who has a majority of logical beings? Humans. Humans are the big enemy: the heart just has the passion and the center of instinct, the body is just muscle and bone(essential a shell of a being), and the soul is what holds the two together, along with give some sense of reason. Alone they aren't that strong and can be easily defeated if you give a person a weapon: but together they(like how humans are) they might be strong enough to defeat any other being, and wield the strongest of all weapons(in KH at least) the keyblade. Think of the secret videos. What does the villain wieldA keyblade. And outside of roxas and ansem/riku, can hold a keyblade? Only whole humans.