[[center: [- [[Characters/KingdomHearts Main Character Index]] | [[Characters/KingdomHeartsSora Sora]] | [[Characters/KingdomHeartsDestinyIslandsTrio Riku, Kairi, and Data-Sora]] | [[Characters/KingdomHeartsDisneyCastleTrio Mickey, Donald, and Goofy]] | [[Characters/KingdomHeartsRoxasAxelAndXion Roxas, Axel, and Xion]] | [[Characters/KingdomHeartsTerraAquaAndVentus Terra, Aqua, and Ventus]] | [[Characters/KingdomHeartsAnsemAndApprentices Ansem and his Apprentices]] | [[Characters/KingdomHeartsXCharacters Kingdom Hearts X(chi) Characters]] | '''Supporting Original Characters''' | [[Characters/KingdomHeartsSupportingSquareEnix Supporting Square Enix Characters]] | [[Characters/KingdomHeartsSupportingDisney Supporting Disney Characters]] | [[Characters/KingdomHeartsXehanortsIncarnations Xehanort's Incarnations]] | [[Characters/KingdomHeartsIndependentVillains Independent Villains]] | [[Characters/KingdomHeartsEnemyCreatures Enemy Creatures]] | [[Characters/KingdomHeartsOrganizationXIII Organization XIII]] | [[Characters/KingdomHeartsDisneyVillains Disney Villains]]]]-]

!Due to the lengthy periods of time passing between releases and many plot twists now being {{Late Arrival Spoiler}}s, numerous spoilers, including many major ones, will be unmarked to prevent pages being dominated by large chunks of white space for decade-old spoilers. If you have not played a game in the series that was released before 2010, read at your own risk!

This is a listing of the OriginalGeneration characters in the supporting cast that appear in the ''Franchise/KingdomHearts'' series.

'''Beware of unmarked spoilers.'''

[[caption-width-right:177:"I was lonely for so long... I just couldn't bear it anymore. So I called out to your heart and had you come all the way out to this place. You came for me and I'm so... So happy, but... But to your heart I had to..."]]
->''"Roxas! We will meet again. And then we can talk about everything. I may not know it's you, and you may not know it's me. But we will meet again. Someday soon. I promise!"''
-->'''Voiced by:''' Iku Nakahara (Japanese), Creator/BrittanySnow (''II'' only, English), Creator/MeaghanMartin (all other games[[note]]In the ''II.5'' version of ''Kingdom Hearts II Final Mix'', her voice is only used for the new cutscenes. Scenes that were present in the original use Brittany Snow's voice tracks.[[/note]], English)
-->'''Appearances:''' ''[[VideoGame/KingdomHeartsChainOfMemories Chain of Memories]]'' | ''[[VideoGame/KingdomHeartsII II]]'' | ''[[VideoGame/KingdomHeartsBirthBySleep Birth by Sleep]]'' | ''[[VideoGame/KingdomHearts358DaysOver2 358/2 Days]]'' | ''[[VideoGame/KingdomHeartsCoded coded]]'' | ''[[VideoGame/KingdomHearts3DDreamDropDistance Dream Drop Distance]]''

A soft-spoken girl who likes to draw. She's a witch with the power to alter memories, which was exploited by Organization XIII to manipulate Sora during the events of ''VideoGame/KingdomHeartsChainOfMemories''.

She is Kairi's Nobody, born when Kairi's heart was freed from Sora's after he turned into a Heartless. Unlike the others, she appears to actually have feelings due to lacking memories of her previous life to base her reaction off of.
* TheAtoner: After screwing up Sora's memories under Marluxia and Larxene's orders, she spends an entire year setting them back together.
* BecauseYouWereNiceToMe: Sora's party were the first people ''ever'' to be nice to her, even despite everything she'd done to them, which is why she spends the next year straight working on their behalf. It goes to the extent that, despite being at Marluxia's mercy, she openly defies him and refuses to hurt Sora anymore.
* BewareTheNiceOnes: She's overall a pretty demure person who, at worst, is a bit passive-aggressive. When the Riku Replica was about to kill Sora she used her powers, which [[MindRape completely shattered his memories]], to protect Sora, although in that case even she seemed surprised at herself for having done that, suggesting PowerIncontinence.
* BlondeBrunetteRedhead: The Blonde to Xion's Brunette and Kairi's Redhead.
* TheCameo: Appears for a moment in ''3D'' on Sora's dream version of The World That Never Was. Before Sora has a chance to thank her as instructed to by Jiminy's Journal, her form changed into that of Xion and she runs off.
* CharacterDevelopment: Starts off in ''Chain of Memories'' as extremely passive and did whatever she was told, but Sora's influence led to her gaining confidence in herself and ignoring orders to do what was right. In ''II'' she openly defies [=DiZ=]'s orders and facilitates Kairi's escape from Organization XIII's captivity, both at the risk of her own life.
* CuteWitch: Larxene and [=DiZ=] even explicitly call her as such.
* DamselInDistress: Twice; born into the role as a prisoner of Marluxia in ''Chain of Memories'', and then becomes a prisoner of [=DiZ=] once she stops obeying his orders in ''Kingdom Hearts II'''s prologue. She finally stops this behavior when she reaches The World That Never Was.
* DemotedToExtra: From ''Chain of Memories'' to ''Kingdom Hearts II'', along with Axel. However, considering how the entire plot of ''Chain of Memories'' revolved around her, this was unavoidable.
* DemotedToSatelliteLoveInterest: Similarly to Kairi with Sora, almost all of Naminé's scenes in ''Kingdom Hearts II'' are based around her strong feelings of attachment to Roxas and wanting to help him / reunite with him, although the romantic angle is underplayed.
* DoesThisRemindYouOfAnything: In ''Chain of Memories''. She's a teenager who is being held as hostage by a bunch of adults, mostly male, [[FromBadToWorse but then we see]] that the SmurfettePrinciple Larxene is actually even dirtier than the males, as she has no sense of personal space at the poor little girl.
* ExtremeDoormat: Through most of ''Chain of Memories'' and ''358/2 Days''. But definitely not in ''Kingdom Hearts II''.
* FakeMemories: What her powers revolve around.
* {{Flanderization}}: In ''Chain of Memories'', she was a ShrinkingViolet who was ridden with guilt over messing with Sora's memories, but had grown beyond it in ''Kingdom Hearts II''. In all her subsequent appearances, though, her ShrinkingViolet demeanor and angst related to hurting Sora are back in full focus, in addition to [[MrExposition her expository duties.]]
* FlatCharacter: Much like Kairi, she starts off more well-rounded and then her characterization sadly deteriorates, although in this case it's not for being OutOfFocus but from {{Flanderization}}: being sad about hurting Sora (plus Roxas and Xion by extension) and wanting to make up for it gradually became the sum total of her personality.
* GirlInTheTower: In Chain of Memories.
* GirlyRun: Bonus points for HoldingHands with Kairi at the same time.
* HairOfGoldHeartOfGold: Given that she's not even much of a Nobody, it's to be expected.
* HighHeelFaceTurn: Not that she was ever evil, though.
%%* InnocentBlueEyes
* {{Leitmotif}}: "Naminé".
* LimitedWardrobe: Although she's not the only character who play this trope in the games (as many Disney characters are also this), Namine is more noticeable for still wearing the very same sundress in Kingdom Hearts II. Inevitably as [[ShesAllGrownUp she gets taller]], even if it's not really played for {{Fanservice}}, the sundress no longer covers her knees and is now exposing [[ShesGotLegs her legs]].
* ManipulativeBitch: What Larxene calls her. Although this is [[RewritingReality technically true]], Larxene's AlphaBitch position in the plot toward Naminé makes the call a case of HypocriticalHumor.
* MindOverManners: She confesses to Roxas that she's not sure how to use her memory manipulation powers, or if she even should.
* MissExposition: Her main role post ''Chain of Memories'' and ''Kingdom Hearts II'', particularly in ''Coded''.
* MysteriousWaif: In ''Chain of Memories''.
* NeutralFemale: Despite bigoted remarks by [=DiZ=] on her and all the Nobodies, she never spoke up against him one bit. Compare this to Roxas and Riku, the former declaring that he hated him while the latter abandons him after revealing his selfish intentions. Toward the end of her tenure with him, however, she did get sick of this enough to defy him in order to help Roxas.
* NeverASelfMadeWoman: She works for or with Marluxia, Axel, Riku and [=DiZ=], but seldom takes action of her own volition, with a noteworthy exception being in [=KH2's=] prologue in which she defies [=DiZ=] in order to help Roxas chose to remerge with Sora rather than be forced into it.
* NiceGirl: She's even meek and soft-spoken to someone like [[{{Jerkass}} Larxene]]!
* OfficialCouple: Implied to be one with Roxas in the credits of ''2.8 Final Chapter Prologue'', which places them in a montage of romantic couples.
* RememberTheNewGuy: InUniverse, invoked by the Organization XIII in order to attempt to manipulate Sora in Castle Oblivion.
* RewritingReality: Uses drawing to manipulate memories.
* ShesGotLegs: In KH II.
* ShesAllGrownUp: In Kingdom Hearts II, she looks notably taller and more well-endowed. Her dress' skirt is [[DangerouslyShortSkirt shorter]], too.
* ShrinkingViolet: For the most part in ''Chain of Memories'', until she gains some confidence at the end.
** Also this in ''358/2 Days'', but grows out of it by ''Kingdom Hearts II''.
* SplitPersonalityMerge: With Kairi at the end of ''Kingdom Hearts II'', although she still seems to be able to communicate with Sora and Roxas, considering Riku's comment in the ''Final Mix +'' that Sora can thank her after they beat Xemnas (which, at that point, was after said merge), and she and Roxas exchange smiles through Sora and Kairi in the ending scene.
* StayInTheKitchen: Most of her role, whether enforced by those around her or not. However, like Kairi, she still manages to get out and help during the final world of ''Kingdom Hearts II''.
* SuspiciouslySimilarSubstitute: To Kairi in ''all'' senses in ''Chain of Memories'', but Sora doesn't catch on until she sets him straight about it.
* TextileWorkIsFeminine: Subverted in the tie-in manga. Namine sews up Axel's black coat out of gratitude towards him, but according to him did a poor job of it.
* ThemeNaming: Her part in the "girls related to Kairi" group is ''nami'' for wave.
* ThinkingUpPortals: Can manifest Corridors of Darkness. Notably, she can do so even after she has merged with Kairi.
* TookALevelInBadass: She gains a ''lot'' more confidence in ''Kingdom Hearts II'', evaded capture from the Organization, and helped rescue Kairi. She and Kairi together even stood up to Saïx physically, and that's gotta count for something.
** Near the end of ''Chain of Memories'', she stands up to Larxene and Marluxia, and manages to almost pull an ''accidental'' one hit kill on the Riku Replica. For some reason, that portion of her power is never mentioned again.
* VoluntaryShapeshifting: It is unclear whether she's this or a MasterOfIllusion, but Naminé, much like [=DiZ=], can change her appearance with the power of darkness. She only uses this in order to change into the form of Kairi, so while the extent of changes she can make is unknown, she could not hide her "light vs. darkness" scent.
* WomanInWhite: Constantly wears a white dress.
* YouHaveOutlivedYourUsefulness: At the end of Roxas' prologue in ''II'', [=DiZ=] outright says that with Sora completely restored, he has no further use for Naminé, and orders Riku to kill her. Of course, Riku is already disgusted with [=DiZ=] for using Sora in an effort to get revenge on Organization XIII, and instead lets her go.
* YoungerThanTheyLook: She's physically a teenager, but technically, by the time of ''II'', she's at most one year old.

[[folder:Hayner, Pence, and Olette]]
-->'''Voiced by:'''\\
'''Hayner''': Kazunori Sasaki (Japanese), Justin Cowden (English)\\
'''Pence''': Hayato Taya (Japanese), Creator/SeanMarquette (English)\\
'''Olette''': Yuka Hirasawa (Japanese), Creator/JessicaDiCicco (English)\\
'''Appearances:''' ''[[VideoGame/KingdomHeartsChainOfMemories Chain of Memories]] | [[VideoGame/KingdomHeartsII II]] | [[VideoGame/KingdomHearts358DaysOver2 358/2 Days]] | [[VideoGame/KingdomHeartsBirthBySleep Birth by Sleep]] | [[VideoGame/KingdomHeartsCoded coded]] | [[VideoGame/KingdomHeartsIII III]]''\\

A trio of kids from Twilight Town. They are all close friends and like to hang out, put off homework, and eat sea-salt ice cream together. A virtual Hayner, Pence, and Olette serve as Roxas's friends in [=DiZ=]'s simulation of Twilight Town during the opening of ''VideoGame/KingdomHeartsII'' to keep Roxas occupied while [=DiZ=] manipulates him.
* AgentScully: Pence is always looking for a logical explanation to whatever he finds around town. Of course, after he meets Kairi, his ideals become more illogical.
%%* BigFun: Pence.
* HotBlooded: Hayner. He even attempted to take on Axel in a fist fight alongside Pence as backup. Luckily for him Axel was busy.
* TheLeader: Hayner is in charge of the group and dictates most of their activities, even though Pence and Olette are more sensible than him.
* LivingEmotionalCrutch: Sadly, they don't know it, but they are this for Roxas.
* NeutralFemale: Compared to the male Hayner and Pence who at least tried to attack Axel when kidnapping Kairi, Olette does not make any attempt to attack him one bit.
* NonActionGuy: Pence, not to say he doesn't try to help save Kairi when Axel kidnaps her.
* PlatonicLifePartners: Pence and Olette.
* ShipperOnDeck: Olette seems to be quite entranced with Kairi's story about her and Sora. She even calls it "romantic".
* ShoutOut: "Dog Street", the brand on Pence's clothes, is a reference to both ''VideoGame/TheBouncer'' (Creator/SquareEnix's debut UsefulNotes/PlayStation2 game) and the [[FunWithAcronyms Disk Original Group]] software team within Square in the mid-80's.
* TheSmartGuy: As shown toward the end of ''Kingdom Hearts II'', Pence is good with computers, being able to help Sora, Donald, and Goofy hack into [=DiZ=]'s computer at the Old Mansion to get the simulation beam up and running.
* ThoseTwoGuys: A bit, even to Sora in the middle stages of ''Kingdom Hearts II''.
* ThreeAmigos
* TwoGuysAndAGirl

[[folder:Master Eraqus]]
[[caption-width-right:197:"Why do all my attempts to reach you fail? If you don't have it in your heart to obey... then you'll have to share Ventus' fate."]]
->''"Fear leads to obsession with power, and obsession beckons the darkness."''
-->'''Voiced by:''' Creator/MakioInoue (Japanese), Creator/MarkHamill (Old, English), Creator/DrakeBell (Young, English)
-->'''Appearances:''' ''[[VideoGame/KingdomHeartsBirthBySleep Birth by Sleep]]'' | ''[[VideoGame/KingdomHeartsIII III]]''

One of the few remaining Keyblade Masters in ''VideoGame/KingdomHeartsBirthBySleep'', he lives in the Land of Departure as the mentor of Terra, Aqua, and Ventus. Eraqus is a kind and fatherly man, but he vehemently opposes the use of darkness and refuses to accept the idea that it may have a proper place in the world. This places him at odds with Master Xehanort, as they trained together but Xehanort developed some rather different ideas about darkness.

* AllYourPowersCombined: His armor makes use of his students' elements, and changes combat styles depending on who you're fighting it with. Considering the armor's data is based on his fighting style, it's easy to infer that Eraqus himself has the same abilities.
* AlternateCompanyEquivalent: To Yen Sid. [[MeaningfulName Look at his name]].
* BlackAndWhiteMorality: As said by [[UnreliableNarrator Master Xehanort]], he only thinks in absolutes: in his mind, LightIsGood and DarkIsEvil, no exceptions. Granted, Xehanort in any incarnation isn't the best in terms of reliability on that subject, but his behavior, such as failing Terra in the Mark of Mastery Exam for having any darkness in his fighting style, even by accident, seems to indicate this is true.
** Given that Riku uses/used Darkness and Yen Sid makes him a master, it backs up Xehanort's point even more. Eraqus is ''too'' extreme in his "light is good" and it creates a lot of problems.
* BlowYouAway: One of his attacks as a BonusBoss is a massive tornado.
* BossRemix: The Armor of the Master battle is backed by a more dramatic version of the Land of Departure battle theme.
* BonusBoss: His armor makes a nasty one in ''Final Mix''.
* CainAndAbel: Master Xehanort was like a brother to him growing up. Guess which one Eraqus ends up being. [[note]]It's the one who dies, in case you don't know![[/note]]
* ClimaxBoss: The last boss in ''Birth by Sleep'' chronologically before the final bosses.
* CoolKey[[CoolSword blade]]: Master's Defender, which looks like an "[[BroughtToYouByTheLetterS E]]" toward the teeth (likely for "Enix").
* DisneyDeath: Possibly. Blank Points hints that he may have escaped death by seeking refuge in Terra's heart. [[SequelHook Terra only smirks]].
* DontMakeMeDestroyYou: When he tried to kill Ventus only for Terra to intervene, he orders Terra to get out of his way, and when Terra refuses...
-->'''Eraqus''': Why do all my attempts to reach you ''fail''? If you don't have it in your heart to obey... then you will have to share Ventus's fate. [''sheds a SingleTear'']
* DyingMomentOfAwesome: Willfully vanishes into Terra, preemptively giving him Eraqus's LightEmUp Heart to later counter Master Xehanort's CastingAShadow one.
* EverythingsBetterWithSamurai: Way moreso than Terra. His armor, which appears in ''BBS Final Mix'', has a very prominent samurai motif.
* FaceHeelTurn: Not quite, though you do have to fight him as Terra. Instead, it's implied that he's become so absorbed in his Light-based philosophy and so torn between his emotional connections to Xehanort, Ventus and Terra and the situation at hand that he falls into darkness by the time Terra battles him.
* FailureIsTheOnlyOption: Had Eraqus ''succeeded'' in killing Ven, the proto-χ-blade wouldn't have been forged... which, given the [[FlawedPrototype "proto" prefix]] and that Xehanort is working on the real thing in the present day, [[SenselessSacrifice would have amounted to nothing]].
* GoodOldWays: He's a traditionalist by nature, shown in his belief in light and rejection of darkness.
* GoodScarsEvilScars: Has two scars across his face, said scars having been inflicted by Xehanort.
* HeelRealization: He has a serious "MyGodWhatHaveIDone" moment after Terra stops him from fighting further, understanding that his dogmatic belief in pure light is what has brought so much pain to his pupils.
* HeelFaceDoorSlam: He barely has enough time for a MyGodWhatHaveIDone moment after his attempt on Ven and Terra's lives before Xehanort kills him.
* HorribleJudgeOfCharacter: It's implied that the one that truly has the distorted view is Master Xehanort, but that Eraqus himself also has an equally distorted view for trusting him; even after Xehanort attacked and scarred him when Eraqus pointed out the severe moral issues in his plans, Eraqus still forgave and trusted him after several years of avoiding each other. Then, during the Mark of Mastery exam, when Xehanort sabotages the balls of light, he doesn't for a second suspect that it was him, despite the fact [[WhatAnIdiot he was sitting right next to him]].
* IDidWhatIHadToDo: Which was try to kill Ven to save the universe.
* {{Irony}}: Forgiving Xehanort and inviting him to the Mark of Mastery (i.e., a surprisingly open-minded response by such an "absolutist") allows things to derail as they do, while wanting nothing more to do with Xehanort (i.e., what you'd expect from such an "absolutist") would've been the better option in the end.
* ItsAllMyFault: He blames himself for not seeing Terra's fall into darkness.
* JerkassHasAPoint: Given the countless DarkIsEvil moments in the series, combined with Xehanort being such an UnreliableNarrator about his YinYangBomb claims, you really can't blame Eraqus for disliking Darkness so much (bad actual decisions notwithstanding).
* KickTheMoralityPet: He becomes so determined to stop Xehanort from acquiring the χ-blade that he's willing to outright ''kill'' Ventus to prevent it, and then Terra when he steps in and refuses to let him harm Ven. After the battle, Eraqus has just enough time to realize he screwed up before Xehanort finishes him off from behind.
-->'''Eraqus''': I failed you, Terra. Perhaps I've no one to blame but myself for the darkness inside you. And now, I've done worse... raised my Keyblade against you and Ventus. My own heart is darkness!
* KnightTemplar: He absolutely hates darkness and is willing to do whatever it takes to keep it from spreading, even if he must ''murder'' Ventus to prevent Master Xehanort from taking the χ-Blade and destroying the world again. Master Xehanort claims Eraqus is "blinded by light" and despite being the BigBad, there's some truth to that claim. Considering all other Keyblade Masters acknowledge darkness is a necessary force to keep the universe in balance, Eraqus comes off as a fanatic.
* LightEmUp: Almost of his attacks are of the light element.
* LightIsGood: A vehement believer in this.
* LightIsNotGood: His belief that straying from the light in any capacity is evil is what causes him to attack Ventus and Terra. Eraqus's dialogue implies that his fanaticism towards light, ironically, made his heart susceptible to darkness.
* ManlyTears: Before his DisneyDeath.
* MasterSwordsman: He ''is'' a Keyblade Master and not a retired one at that.
* TheMentor: Ironic, considering that [[Creator/MarkHamill he is]] [[Franchise/StarWars Luke Skywalker]] and filled the same role in the ''Literature/JediAcademyTrilogy''....and unfortunately, also in ''Film/TheForceAwakens'', as far as Luke's luck with apprentices falling to the dark side, whose actions ultimately cause the end of everything their respective masters had built.
** With the release of ''Film/TheLastJedi'', the parallels just keep growing. [[spoiler: Not only does Luke die at the conclusion of facing his wayward apprentice, albeit in a different way, it turns out that, like how Eraqus' absolutism was what was just pushing Terra further into Xehanort's hands, Luke's MomentOfWeakness in briefly considering killing his already-corrupted apprentice just pushed the latter into turning on him.]]
* MentorOccupationalHazard: And, for the most part, it's pretty much his fault, since he pushed Terra's BerserkButton without explaining himself.
* MercyKill: In hindsight, if he'd killed Ven, it certainly would've been this.
* MyGodWhatHaveIDone: After he fights Terra, he realizes just how far his KnightTemplar tendencies made him go.
* NoCelebritiesWereHarmed: His appearance is quite likely based on ''Franchise/FinalFantasy'' creator Hironobu Sakaguchi.
* OlderThanHeLooks: He is assumed to be around the same age as both Yen Sid and Xehanort.
* ParentalSubstitute: The reports state that he loves Terra, Ven, and Aqua like his own children; Terra even outright calls him his father.
* PlayingWithFire: Notably his only magical attack not to be light elemental is fire.
* ProperlyParanoid: Xehanort certainly reinforces his negative views about darkness.
* ReasonableAuthorityFigure: Subverted; he turns out to be more of a KnightTemplar.
* ReverseShrapnel: One of his most powerful attacks is surrounding himself with magical light keyblades which spin around him and shoot lasers.
* ScrewDestiny: In the E3 2015 trailer, Young Eraqus flat says that there's nothing saying he can't change the future if he wants to, in response to Young Xehanort's comments concerning how light is destined to expire and darkness prevail. An amused Young Xehanort says he hopes he's right about it.
* ShieldBash: As his Armor Data, he's fond of using the light shield on his back to trap his target.
* ShootTheDog: He tries to do this when he learns that Xehanort needs Ven to create the χ-blade. Terra catches him in the act and is ''not'' happy.
* SiblingRivalry: It is mentioned in the Xehanort reports that Xehanort and Eraqus viewed each other as brothers, which goes a long way towards explaining why it takes so long for anyone to suspect Master Xehanort is up to no good. Still, it's also mentioned that Xehanort began turning his intellect down darker paths once their master chose Eraqus as his successor instead of Xehanort...
* SmartPeoplePlayChess: His cameo appearance in the ''VideoGame/KingdomHeartsIII'' trailer has his younger self playing a chess-like game with Xehanort. From the looks of it, he's losing, but chess ''is'' one of those games where [[BackFromTheBrink the number of pieces remaining doesn't always determine the outcome.]]
* StormOfBlades: One of his more brutal desperation attacks is to shoot out a bunch of [[LightEmUp light]] magic Keyblades.
* TakeUpMySword: To Aqua. He gives the order before she leaves, but she follows it and turns the Land of Departure into Castle Oblivion posthumously using his Keyblade.
* UnwittingInstigatorOfDoom: His [[BlackAndWhiteMorality extremist]] [[KnightTemplar views]] of LightIsGood and DarkIsEvil caused him to reject Terra as a master, ask Aqua to spy on him out of concern that Terra might become evil from the darkness, which in turn caused Terra to lose trust in him and trust Master Xehanort more, which made it all the easier for Xehanort to manipulate all the events and suceed with his GrandTheftMe of Terra. Very probably a part of Xehanort's schemes since the beginning, as he's the one who convinced Eraqus that Terra wasn't ready to be a master in a letter addressed to him.
* WellIntentionedExtremist: He's a good man, but is firmly convinced that LightIsGood and DarkIsEvil no matter what, to the extent that he actually tries to murder Terra and Ven.
* WhatIsOneMansLifeInComparison: Kill Ven to prevent the χ-blade from being forged, or risk the destruction of the universe? It's not a pleasant choice.
* WouldHurtAChild: He'll hate it, though.
* YouAreNotReady: What he says to [[AntiHero Terra]] due to his use of [[CastingAShadow darkness]].

->"I know I won't forget you. Believe me, I try all the time."

-->'''Voiced by:''' Ginpei Sato (Japanese), Creator/KirkThornton (English)
-->'''Appearances:''' ''[[VideoGame/KingdomHeartsBirthBySleep Birth by Sleep]] | [[VideoGame/KingdomHeartsCoded coded]] | [[VideoGame/KingdomHearts3DDreamDropDistance Dream Drop Distance]]''

Isa is the complete being of Saïx. Isa is best friends with Lea.
* BrainwashedAndCrazy: It's unknown when it happened, or how ''aware'' of it he was, but he became a vessel for Xehanort with his SupernaturalGoldEyes being a sign of possession. It sadly explains his inability to understand good, his [[{{Jerkass}} cruelty towards others]], and [[UsedToBeASweetKid why he seemed so ''different'' as a kid]].
* DeadpanSnarker: Mainly in ''Birth by Sleep'' as Isa when he's interacting with Lea.
* GenderBlenderName
* GreenEyes: When he was human. This change is very important.
* JerkWithAHeartOfGold: Before losing his heart. He enjoys making sarcastic quips at Lea, but it's clear that Isa was a relatively sweet person before he became Saïx.
* PerpetualFrowner: He rarely changes his expression.
* RedOniBlueOni: The blue to Lea's red.
* SpellMyNameWithAnS: The diaeresis doesn't appear in any Japanese media.
* TheStoic: Though given it was before his transformation into a Nobody, he was more NotSoStoic beforehand.
* VitriolicBestBuds: The general impression that we get from his appearance in ''Birth By Sleep'' is that he and Lea were this before they became nobodies. The two enjoy [[DeadpanSnarker making quips]] at one another's expense, but it's clear that they were close.
* UsedToBeASweetKid: "Used to" being the operative words. In ''Dream Drop Distance'', we learn why.
* WeUsedToBeFriends: Isa and Lea are close friends but slowly grew apart after they lost their hearts.
* YouGottaHaveBlueHair: He has blue hair.