Kingdom Heartsis a series well-known in the gaming community fora number of reasons. If there’s one that reaches even outside observers though, it’s the series' often complex and confusing storytelling.

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Keeping track of the plot of the series is a mission of its own, not helped by the sheer amount of reveals and plot twists the series likes to employ. WithKingdom Hearts 4on the horizon, the series is entering a new phase, and instead of trimming down the number of hanging threads, it has opted to increase them. There are tons of secrets being withheld from not just the audience, but even the other characters in the story.

9Axel/Saix

These two old friends have been on very different journeys since their introduction as part of Organization 13. They share the same spot because they have the same secret. It was known sinceKingdom Hearts Birth By Sleepthat they had tried to sneak into Ansem The Wise’s castle, butKH3revealed that they had done so several times, in order to visit a mysterious girl.

This girl is hinted at being a character fromKH Union X, most likely Skuld. Whoever she is, Lea and Isa are yet to tell anyone about their relationship with her.

Axel and Saix meeting untop the clocktower in kingdom hearts 3

8Larxene

Despite being a fairly low-ranking villain, Larxene has been one of the most hateful villains in the series. When she was defeated inKH3she stuck partially to her mean streak but also hinted at a deeper connection between her and another character.

KH Union Xhas already revealed that she was alive before the keyblade war, but it was assumed that she had lost her memories of that time. With her dying line inKH3though, it seems like she might remember more than fans are assuming.

Larxene and Marluxia in Kingdom Hearts 3

7Demyx

Theories about Demyx andwhat his true nature ishave been around sinceKH2, first released in 2005. While he’s the resident clown of Organization 13, he’s always had the ability to be very serious when necessary, a fact he spells out inKH3.

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It’s possible that Demyx is exactly as he seems, but Nomura is hardly the type to miss out on a good twist. Demyx has a noticeably similar personality to the Master of Masters, leading many to assume he is the master in disguise. This is further supported by the fact that Demyx is one of the few original characters without a proper backstory.

6Strelitzia

Up until the reveal ofKingdom Hearts 4, fans hadassumed Strelitzia was dead. Now that she has been shown to be residing in Quadratum, this brings up a million questions about her whereabouts for most of the series.

As Sora’s apparent new guide, she will likely be quite forthcoming with him inKH4, but considering howKHtends to structure its plot, it’s highly unlikely that Strelitzia reveals all of her secrets from the start. It’s possible that she takes a similar road as Namine and comes clean near the end ofKH4, but she might very well reveal herself to be an antagonist to Sora.

Demyx

5Xehanort

All throughout the series, Xehanort and his many iterations have been weaving layered schemes behind the scenes. Even after his defeat and death inKH3, the mysteries of Xehanort have only been growing.

He is still the only one who knows the true extent of the experiments he carried out in Ansem’s lab. These experiments likely involvedKairiand other named characters, and there’s also no telling what unused plans he had set up. AsKH: Melody of Memoryshowed, Nomura isn’t quite done with Xehanort yet.

Strelitzia in Kingdom Hearts 4

4Luxu/Xigbar

The reveal of Luxu and Xigbar being the same person is easily the biggest reveal ofKH3. It was clear that Luxu was likely still alive in the modern day, but his having been in plain sight the whole time proved just how crafty and unpredictable he could really be.

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Now that he’s somehow returned the foretellers to the world, he has a lot of explaining to do on many fronts. How did he bring them back? What other bodies has he stolen? What is inside the box he carries around? Luxu is a cornucopia of mysteries.

3Luxord

Amongst the ranks of Organization 13, Luxord has always been one of the more mysterious characters. Even afterKH3, it’s entirely unclear who he really is or where he came from. However, he now holds a lot of intrigue around him.

His biggest mystery is the function of the card he gave Sora after their fight. He described it as a “trump card,” but what that could mean is anyone’s guess. On top of that, the ending scene fromKH3’s Re: MindDLC shows what sounds like Luxord driving a car in what seems to bethe setting forKH4.

kh4 square enix dark saga impact

2Yozora

Speaking ofKH4, Quadratum is a new setting for the series that has a host of mysteries of its own. It’s spoken of as being a realm of fiction, despite resembling the real world. Yozora seems to be from this realm, but he has so far been very secretive about his exact origins.

The secret boss fight against him gives some hints about his abilities and personality, but it’s entirely quiet on who he really is. He states that his current form isn’t what he really looks like and that he has to save Sora, but is deliberately vague about both these points.

Xigbar in KH3

1Master Of Masters

Of all the characters introduced overKH’s 20-year history, the Master of Masters (aka MOM) is by far the most cryptic, dwarfing even Xehanort in that respect. He’s a bizarrely comedic character despite his apparent power and knowledge and seems to have been the true mastermind ofthe series so far.

There are only a few living characters who have interacted with him, but even they don’t know what his true plans are. Luxu is the most clued-in, but even he can’t know everything. Honestly, it would be quicker to list the secrets he’s not keeping over the ones he is.

Kingdom Hearts III Luxord

Yozora with weapon

Kingdom Hearts Master of Masters