Here is long and way too over thought guess at who the remaining guardians of light and seekers of darkness are:

 

So far, we have ten confirmed seekers of darkness:

 

1.   Master Xehanort

2.   Young Xehanort

3.   Vanitas

4.   Ansem, Seeker of Darkness

5.   Xemnas

6.   Braig/Xigbar

7.   Isa/Saix

8.   Luxord

9.   Marluxia

10. Larxene

 

We haven't actually gotten an official confirmation (as far as I know) as to who any of the guardians of light are, but I think we are able to make a good guess going off of what has been revealed so far.

 

When King Mickey listed off Keyblade wielders as guardians of light, he listed himself, Sora, Riku, Terra, Aqua, and Ventus.  However, Master Xehanort stated that two of the people on his list belonged to him now.  Sora ended up being saved, but, assuming that King Mickey was paying attention, he would know that someone on his list was one of the seekers of darkness, making his list of Keyblade wielders go from six to five.  However, in the Dream Drop Distance's secret ending, King Mickey says that they only need one more guardian of light.  So, he must count Lea as one of the Keyblade wielders now, and since Kairi was hinted to be the seventh guardian of light right after this, I think that it's safe to assume who most of the guardians of light will be:

 

1.   King Mickey

2.   Sora

3.   Riku

4.   Kairi

5.   Lea/Axel

 

Since we do not yet know the fates of Terra, Aqua, and Ventus (since none of their fates have been confirmed), I don't think we can for sure put them on either of the lists yet (if they will appear on either of the lists at all), even if King Mickey is confident that two of them will be guardians of light.

 

So, that leaves three seekers of darkness and two guardians of light that have yet to be revealed.  The next step is to find out which original characters have not been put on either list yet, and they are:

 

1.   Terra

2.   Aqua

3.   Ventus

4.   Roxas

5.   Namine

6.   Xion

7.   Demyx

8.   Riku Replica

9.   Ansem the Wise

10. Master Eraqus

11. Lingering Will

12. Ira

13. Invi

14. Aced

15. Gula

16. Ava

17. Luxu

18. Master of Masters

19. Ephemer

20. Skuld

21. Brain

22. Player

 

Let's start to narrow down this list.  First of all, even though I think that it is a possibility that the characters from Union χ[cross] and Back Cover will make an appearance in Kingdom Hearts III, especially since both Ventus and Lauriam (even though he hasn't officially been confirmed to be Marluxia's human form, I am counting him as Marluxia's human form) exist in both Union χ[cross] and Kingdom Hearts III, I will not include them in either list simply because I expect the missing members on each list to be characters that Sora and his friends have encountered on their many journeys.  So, now our list includes:

 

1.   Terra

2.   Aqua

3.   Ventus

4.   Roxas

5.   Namine

6.   Xion

7.   Demyx

8.   Riku Replica

9.   Ansem the Wise

10. Master Eraqus

11. Lingering Will

 

Let's start with the seekers of darkness.  We know that the thirteenth seeker of darkness is still missing, so we only need to find out who two of the three are for now.  We also know that one of those two is Terra, Aqua, or Ventus, so, the other spot must be one of these characters:

 

1.   Roxas

2.   Namine

3.   Xion

4.   Demyx

5.   Riku Replica

6.   Ansem the Wise

7.   Master Eraqus

8.   Lingering Will

 

Thanks to the trailers, it seems that both Roxas and Riku Replica have not been made seekers of darkness by the beginning of Kingdom Hearts III, meaning that if either of them is going to be a seeker of darkness, they will be the thirteenth darkness.  However, since we are not guessing who the thirteenth darkness will be yet, they will not be considered for the twelfth darkness.  I think that it is also safe to assume that Namine and Xion, having become a part of Kairi's and Sora's hearts, will not be considered for the twelfth darkness either.  Finally, I think it is safe to take Master Eraqus off the list since he died in Birth by Sleep (although he is hinted to be in Terra's heart).  So, that leaves us with:

 

1.   Demyx

2.   Ansem the Wise

3.   Lingering Will

 

After thinking it over, I think that Demyx will most likely be the twelfth darkness since all of the members of Organization XIII who have not been shown in their human forms have been part of the seekers of darkness.  So, now we just need to decide whether Terra, Aqua, or Ventus will be the eleventh darkness.

 

So far, it hasn't been confirmed if Aqua is a seeker of darkness or not.  However, thanks to interviews with Nomura, it sounds as if the Aqua we see revealed in the Frozen trailer is indeed the real Aqua, and since silver hair and yellow eyes mean Xehanort, I am guessing that Aqua is indeed one of the seekers of darkness.  However, now the question remains: is she the eleventh darkness or the thirteenth darkness?

 

I think that Aqua is the eleventh darkness.  Here's why: In the E3 Showcase trailer, we see Riku and King Mickey return to Mysterious Tower, meaning that they must have finished their mission in the Realm of Darkness, which also means that they must have seen Aqua corrupted by darkness by this point.  When Riku and King Mickey return, Sora is still wearing his Kingdom Hearts II outfit, which means that he hasn't received his new outfit yet.  However, we have already seen Young Xehanort telling Sora that they are missing a darkness that they must reclaim in the Toy Story trailer, and we have seen both Ansem and Xemnas telling Sora that nothing would make them happier than Roxas' return in the E3 Showcase trailer.  In both of these scenes, Sora is wearing his new outfit, which means that the thirteenth darkness is still missing after Sora gets his new outfit.  This also means that when Riku and King Mickey return from the Realm of Darkness, the thirteenth darkness is still missing since Sora hadn't received his new outfit at that time.  If the thirteenth darkness is still missing when Riku and King Mickey return from the Realm of Darkness, and if Aqua is indeed a seeker of darkness by that point, she can't be the thirteenth darkness and therefore must be the eleventh darkness (I hope I made my point clear enough and didn't over explain my point).

 

So, here are the seekers of darkness so far:

 

1.   Master Xehanort

2.   Young Xehanort

3.   Vanitas

4.   Ansem, Seeker of Darkness

5.   Xemnas

6.   Braig/Xigbar

7.   Isa/Saix

8.   Luxord

9.   Marluxia

10. Larxene

11. Aqua

12. Demyx

 

So, that leaves the thirteenth darkness.  Here is the list of characters again who do not belong to either list (not including the Union χ[cross] and Back Cover characters):

 

1.   Terra

2.   Ventus

3.   Roxas

4.   Namine

5.   Xion

6.   Riku Replica

7.   Ansem the Wise

8.   Master Eraqus

9.   Lingering Will

 

Since I think that Aqua was one of the twelve seekers of darkness present at the end of Dream Drop Distance in Where Nothing Gathers, that means that Terra is no longer a seeker of darkness (since Master Xehanort said that only one other person on King Mickey's list other than Sora belonged to him).  I think that also excludes Lingering Will from being a seeker of darkness or a separate character at all since Terra probably reunited with Lingering Will to become a complete person again.  I also think that Master Eraqus (although he may have helped Terra free himself from Xehanort's control from within Terra's heart) will stay dead, which excludes him from both lists.  Also, if Riku Replica hasn't been made a vessel for Xehanort yet, he probably never will be (a weak argument, I know, but if he was in the Realm of Darkness, just like Aqua was, and made it back to the Realm of Light without becoming one of the darknesses, I doubt Xehanort has any interest in him), which takes him off the list.  Namine is part of Kairi's heart, and I think that if the thirteenth darkness will be tied to anyone's heart, it will be to Sora's heart.  Sora didn't know Xion, so he wouldn't be shocked to see her as a seeker of darkness.  Plus, no one remembers Xion (although Lea/Axel might), so unless everyone remembers her once she returns, the heroes won't be shocked to see her as a seeker of darkness.  It could be Ansem the Wise, but, once again, if Aqua was made a seeker of darkness while she was in the Realm of Darkness, and if the seekers of darkness are still looking for their thirteenth member, Ansem the Wise must not be important to Xehanort since he was in the Realm of Darkness with Aqua.  So, that leaves us with Ventus and Roxas.

 

I think it could be either Ventus or Roxas.  If Aqua is indeed a seeker of darkness, Xehanort would have access to Ventus, someone he's been after since the days of the original Organization XIII.  However, if Aqua was already a seeker of darkness before the end of Dream Drop Distance like I think she was, then why didn't Xehanort use her to find Ventus and make him the thirteenth darkness instead of going on a crazy mission to make Sora the thirteenth darkness?  Maybe Aqua couldn't get Ventus because Terra saved him, and if Terra saved him, that must mean that Roxas will be the thirteenth seeker of darkness.

 

And so, I guess that the seekers of darkness will be:

 

1.   Master Xehanort

2.   Young Xehanort

3.   Vanitas

4.   Ansem, Seeker of Darkness

5.   Xemnas

6.   Braig/Xigbar

7.   Isa/Saix

8.   Luxord

9.   Marluxia

10. Larxene

11. Aqua

12. Demyx

13. Roxas

 

So, now on to the guardians of light.  These won't take nearly as long as I already have a guess at who one of the two unknown guardians will be: Terra.  If Terra is no longer a seeker of darkness, he will probably become a guardian of light.  So that leaves the final guardian of light.  Here is the list of characters who are not part of either group yet:

 

1.   Ventus

2.   Namine

3.   Xion

4.   Riku Replica

5.   Ansem the Wise

 

I don't think that either Namine or Ansem the Wise will be a guardian of light since neither of them has been shown to wield a Keyblade (although Namine might be able to since Kairi can).  I also don't think that Riku Replica will be a guardian of light since I think that he will continue to rely on the power of darkness.  That leaves us with Ventus and Xion, and of the two, I think that Ventus will be the final guardian of light.  If Terra saves Ventus from Castle Oblivion, like I guessed earlier, both Terra and Ventus would get to repay Aqua for saving them in Birth by Sleep by saving her this time.

 

And so, my final prediction is that the seven guardians of light will be:

 

1.   King Mickey

2.   Sora

3.   Riku

4.   Kairi

5.   Lea/Axel

6.   Terra

7.   Ventus

 

And that the thirteen seekers of darkness will be:

 

1.   Master Xehanort

2.   Young Xehanort

3.   Vanitas

4.   Ansem, Seeker of Darkness

5.   Xemnas

6.   Braig/Xigbar

7.   Isa/Saix

8.   Luxord

9.   Marluxia

10. Larxene

11. Aqua

12. Demyx

13. Roxas

 

But this is just my best guess.  What do you guys think?

Edited June 26, 20187 yr by Dagesh Lene

In the end, Terra and Terra-Xehanort are not the same person, as I think the first will have some of Eraqus's powers and the second uses the power of Darkness.

 

I would have to both agree and disagree with you.  Terra-Xehanort is Xehanort in control of Terra, just like how Riku-Ansem was Ansem in control of Riku.  So, in a way, Terra-Xehanort is a different person, but in another way, he isn't because Terra is still there.  With that being said, once Ansem forced Riku's heart out of his own body and into the Realm of Darkness, he was no longer Riku-Ansem but was now just Ansem.  Riku still existed in the Realm of Darkness.  He even kept his appearance.  He just no longer had a body.  So, if Xehanort does the same thing to Terra, or if the way that Terra escapes Xehanort is by abandoning his own body, then I could see both Terra and Terra-Xehanort existing at the same time.

 

Now, in theory, whether Terra and Terra-Xehanort are the same person or not, Terra-Xehanort could still be brought to the future, right?  After all, both Master Xehanort and Young Xehanort exist at the same time.  Yes, I think that it is possible.  However, I think that the whole point of the seekers of darkness who are vessels becoming Xehanort is that they are Xehanort in the present, not in the past.  Nomura has hinted that the seekers of darkness who are vessels for Xehanort who have been revealed so far are not from the past but from the present.  As far as I can tell, Young Xehanort, Ansem, and Xemnas are the only ones who are from the past.  Because of that, if one of them escaped from Xehanort's control, I think that it would seem pointless if Xehanort could just go back in time and bring a version of them from the past who was still under his control.  I am not saying that it is impossible.  I think that it is possible.  I am just saying that I think it is unlikely.

 

Plus, we know the Lingering Will is still in the Keyblade Graveyard and thus will be in the final battle unless Terra actually returns as a person and I can definitely see a rematch between he and his past body.

 

I think that Lingering Will will only appear in the final battle if Terra is a seeker of darkness.  If Terra escapes from Xehanort's control, I think that he will reunite with Lingering Will and become a complete person again.  However, if only his heart escapes from Xehanort, or if Xehanort forces his heart out of his own body, then I think that his heart will enter Lingering Will and claim it as his temporary body until he can reclaim his body from Terra-Xehanort.

 

Then there's another thing: we haven't ever seen Radiant Garden so far and I think it'll be the best world for Terra-Xehanort to appear because of his backstory.

 

I agree that Radiant Garden would be a good world for Terra-Xehanort to appear in, but we don't even know if Radiant Garden is going to be a world you can visit.  Yes, we saw it in the E3 Showcase trailer during the cutscene when Ienzo was talking with Sora over that communicator, but we saw Radiant Garden in cutscenes in Dream Drop Distance too, and we didn't get to visit it in that game.  So, it's possible that Radiant Garden may just be seen in cutscenes once again in Kingdom Hearts III.

 

I think we won't know anything for sure until the game releases, and we're almost 5 months away (if some trailer doesn't confirm something).

 

True.  I won't be surprised at all if I am proven to be 100% wrong about everything that I have theorized about for Kingdom Hearts III.  No one can understand the mind of Nomura except Nomura himself.

Edited August 15, 20187 yr by Dagesh Lene