Smithee

I have a similar theory, except with Aqua instead of Vanitas, and Light-related motives instead of Darkness-related motives. Think about it: BBS: Xehanort kills Eraqus from behind. KH3: Eraqus's successor kills Xehanort from behind. Given all her teachings from Eraqus, people like Xehanort doing nothing but proving Eraqus right, Ven's and Terra's fates, and her fight for survival in the ROD, I think Aqua would make an excellent Woobie, Destroyer Of Worlds.

I think that the True Final Boss of KH3 will be some kind of Woobie, Destroyer Of Worlds who wants to "tear down the tyranny of Darkness."

Elements: Time > Water Bosses: Luxord < Demyx It could go either way, IMO.

Maleficent (Sleeping Beauty) > Maleficent (Kingdom Hearts)

http-~~-//www.youtube.com/watch?v=yb6Us0tLTVM

Sorry, but I couldn't resist: http://www.youtube.com/watch?v=ZEAYcR8w_tE

I kind of agree with you. She could just be putting up a facade (see the Stepford Smiler and Broken Bird tropes).

http-~~-//www.youtube.com/watch?v=v6BL6QvKljo Not crazy. Just hardened into a Yuri Lowell-esque "vigilante" against all Darkness.

Makes sense: Terra/Eraqus fight(s) MX's control too much, MX is forced to extract Terra/Eraqus and gets full control over his vessel as a result, and Terra/Eraqus is/are able to merge with the Lingering Will and fight alongside the 7 Lights.

Not mine; just quoted it to give an idea of a sympathetic Light-antagonist. My personal idea is someone similar to, say, Yuri Lowell from "Tales Of Vesperia". Yuri Lowell grew disillusioned with his country's seemingly ineffective laws and became a vigilante as a result. Likewise, my Light-antagonist is someone disillusioned with "balance", which he/she believes only gives Darkness a free pass.

From the "Wild Mass Guessing - Kingdom Hearts" section of TV Tropes: "The very last boss of the very last game will be Kairi. Throughout the game, Kairi will be kidnapped and experimented on by whichever incarnation of Xehanort is the Big Bad at the moment (or one of his minions). Since she has no darkness in her heart, Xehanort and his underlings will somehow try to extract the light in her heart and use some kind of polarizing machine to use Kairi's light to get rid of all the light in the multiverse and plunge it into a world of eternal darkness. (Or something like that.) This, of course, will turn Kairi into a mentally unstable, suffering wreck, and the game will go to great lengths to show her ordeals throughout the story. When Sora, Riku and their companions arrive to defeat Xehanort and rescue Kairi, they'll notice Kairi's heavily unstable state and get really worried. Of course, they'll get all angsty at Xehanort for turning her into a half-dead wreck of a human being by tampering with her heart too much. We'll get the usual multi-tiered epic final battle against Xehanort, and it'll look like Sora's finally won, Xehanort is finally dead, and the story is finished. But Kairi isn't back to normal again! Sora tries everything to restore her, but to no avail. Mickey (or some other mentor) tells the gang that Xehanort's tampering with the light in Kairi's heart has turned her into a ticking time bomb that threatens to engulf the entire multiverse in light and eliminate all darkness, and that pure light is just as destructive as pure darkness; there must be balance. Mickey explains further that the only way to save the multiverse is to seal Kairi's heart. With no other alternative, Sora must fight his friend if he is to prevent everything from being consumed. Kairi, now completely possessed by the light, grows a pair of angel wings, draws her Destiny's Embrace Keyblade, and the fight begins. Throughout the whole final battle (which would probably be a Breather Boss), Sora will be extremely hesitant and unenthusiastic in his attacking, and will be visibly crying throughout the whole battle, Same for Kairi, to some extent, but she'll feel that she has no choice but to eliminate all darkness in the worlds to undo all the harm that Xehanort has done. We'll probably get some soft, sad remix of Kairi's theme as the battle music. At the end, Kairi, now close to dying, will regain her senses, and thank Sora for ending her suffering and saving the worlds. She'll then dissolve into thousands of particles of light and float away. Although this could end up being Narm. Sorry if that seemed random, but hey, it's Kingdom Hearts."

He likely stopped aging when Terranort became Ansem SOD and Xemnas.

I meant if he/she were an Anti-Villain or something like that.

Given the history of Darkness-related tragedies in the KH series, would you sympathize with a Light-based antagonist?

He's not. Proof (see 5:43-6:02): http://www.youtube.com/watch?v=46-NdTYh4qY&feature=related

Mickey and Riku were able to escape the ROD by opening Corridors Of Darkness, something which Aqua could never do, due to her pro-Light/anti-Darkness stance (which certainly hasn't been helped by Xehanort, Vanitas, Braig, Maleficent, the Unversed, the Heartless, the ROD itself, etc.).

If you ask me, any of the BBS main characters could have that role, given how they've all been victimized by Darkness.

An antagonist of Light instead of the usual Darkness. Perhaps an Anti-Villain who wants to create a universe where no one has to worry about Darkness anymore?

http-~~-//www.youtube.com/watch?v=zkuK39sIHv4

*EDIT*

Alternatively, Terra's Heart (and, by extension, Eraqus's Heart) may no longer be present inside Terranort, but instead elsewhere (much like how Ansem SOD removed Riku's Heart in KH1).