In Episode 2, it is revealed that Xion is actually an omniscient being: a planet that birthed an intelligence powerful enough to calculate everything within the universe and become the incarnation of knowledge itself. At its own request, the planet Xion was transformed by the Photoners into the core of the Oracle Mothership, and assumes a role similar to a central computer system. Luther's goal was to "hack" Xion and forcefully merge with her, thereby seizing her infinite stores of knowledge for himself. Though he manages to succeed, he inadvertently concentrates all of Xion's essence into one place, allowing her to perform a Heroic Sacrifice and deprive Luther of his omniscience forever.
In Episode 3, the remnants of her existence continue to remain dormant within the Clarissa's core. At the Episode's end, Persona calls upon her power as the Clarissa to absorb the corrupted photons from both you and Matoi, purifying and restoring the latter while transforming Persona into The Profound Darkness. She and Persona bid the two of you farewell as she dissipates from existence.
- All-Powerful Bystander: According to Luther, if Xion's power is as great as believed, Xion certainly could have seen both the creation of the Profound Darkness and its consequences in advance, but stayed her hand on the matter despite being able to stop it. No one knows why she didn't do anything, but Luther, having been stuck in a Pocket Dimension for quite a while, presumes it was out of loneliness.
- Astral Projection: You might've noticed that Xion has a name tag. You also might've noticed that the face on the tag doesn't look like the one you're talking to. If you didn't catch it, she'll point it out later on, right before she sends you and Matoi to go save her real body. And as it turns out, that isn't her real body either.
- Big Good: She gives the player the ability to travel through time and works with them to Set Right What Once Went Wrong.
- Cryptic Conversation: Everything that Xion tells you throughout Episode 1 is incredibly strange and ambiguous. She does this to hide her motives from her captor, Luther. By Episode 2, she gets less cryptic and more straightforward, since Luther has begun to make his move.
- Genius Loci: Xion herself, being a planet made entirely of an living ocean that spent it's entire "life" calculating all that exists. The Photoners (with the exception of Luther) are later fused within her.
- Heroic Sacrifice: Xion and the spirit remnants of the Photoners get together at the last minute and restrain Loser, allowing you and your party to escape unharmed. They are then subsequently consumed by Loser when he transforms into Dark Falz Loser.
- Invisible to Normals: She cannot be seen by anyone except you and Matoi. This is due to her status as an Astral Projection.
- Killed Off for Real: By the end of Episode 3, Chapter 7, she finally expends the limits of her power as the Clarissa, and disappears for good.
- Meaningful Name: "Shion", which contains the character "shio", which means "tide". Xion's true form is akin to that of an ocean planet.
- Mercy Kill: After Luther absorbs Xion, this is Xion's final request to the player, as only her death will stop Luther once and for all.
- Mind Screw: Xion isn't human at all, nor a Photoner. Her current form as she appears to you is just a copy of the first Photoner she met. As Luther explains, she is apparently knowledge itself.
- My Greatest Failure: The cause of all of Xion's troubles is that she made the mistake of coming in contact with the Photoners, instead of observing them like she was supposed to. She's obviously kicking herself for this, and since she's a little tied up, she needs you to right the future for her.
- Sealed Good in a Can: The Oracle Mothership's true (original) purpose was to act as a shield for Xion, thus becoming her "can".
- Set Right What Once Went Wrong: Xion's purpose throughout the game. Coming into contact with the Photoners indirectly caused the birth of the Profound Darkness, and one particular Photoner (Luther) is deadset on assimilating her and doesn't care about the coming apocalypse. She thus enlists the Player Character to fix the damage.
- Walking Spoiler: As you might expect from someone who purposely tries to be cryptic, she has a rather large hand in the plot.
- Zettai Ryouiki: Grade B/C. It's harder to notice than most because of the swirly cosmic effect-skin thingy that covers her body.
A mysterious young boy who proclaims to be the "brother of Xion", or at least, that's what they call him. He is instrumental in stopping Luther's plotting in Episode 2, granting you the power of Time Travel and working behind the scenes to help the protagonists. He is actually a copy of Xion from another timeline. At the climax of Episode 2, after Xion kills herself, Xiao pulls himself into the current timeline and asserts control over Oracle as its new Mothership Core.
In Episode 3, Xiao begins to give the player new sets of Matter Boards, as well as provide in-depth information about various topics related to the ARKS and current events, as well as serving as your new permanent Mission Control.
In Episode 4, Xiao disappears to search for a way to permanently destroy The Profound Darkness, leaving the continued operation of ARKS in Ulc's capable hands and creating the Hi-CAST "Xierra" to take his place as Mission Control while he's away.
In EPISODE 5, Xiao returns from his absence, having devised a plan to save Persona. When the plan goes awry, he and Xierra discover the appearance of a mysterious black hole, which is revealed to lead to a strange alternate universe known as "Omega". Xiao subsequently assists Xierra in Mission Control from Oracle as the player travels Omega.
- Adorably Precocious Child: He certainly plays the part, but given his relation to Xion, it's possible that he could be older than he looks.
- Big Damn Heroes: Right when it seems the ARKS is done for, Xiao manages to pull another Oracle Mothership out of time and usurps control of the fleet from Luther, saving the entire organization at their last moments.
- Big Good: Assumes the role from Episode 2 onwards, and unlike Xion is able to work more openly with the ARKS.
- Changing of the Guard: Xiao takes over the Matter Board business for Xion after certain events transpire.
- Crouching Moron, Hidden Badass: While Xiao acts a lot like the kid he projects himself as and is clumsier with his time-space powers than Xion, it doesn't change the fact that he has time-space powers. Most of your direct meddling in the timeline is done with his help, to say nothing about pulling an Oracle Mothership out of thin air to screw over Luther.
- Died in Your Arms Tonight: Xiao's last moments are in Sara's arms.
- Fanservice Pack: A Rare Male Example; his reappearance in EPISODE 5 gave him a Plot-Relevant Age-Up and moved him a lot closer to Bishounen.
- Heroic Sacrifice: Xiao protects Sara from being killed by Shiva's attack and is gravely wounded in the process. Lisa, Matoi and the player show up to keep Shiva busy while Xiao dies peacefully in front of Sara.
- Impossibly Cool Clothes: That dark shirt he wears? It flows like water!
- Megane: In EPISODE 5, he starts wearing Xion's glasses.
- Mission Control: Eventually becomes this for you after you receive the power to Time Travel and Xion performs a Heroic Sacrifice at the Mothership.
- Mr. Exposition: When he isn't Mission Control, he's usually this, providing you and your party with valuable information about the ARKS and the Darkers.
- No Social Skills: He's less accustomed to people than Xion, so he doesn't quite know how to be polite beyond Brutal Honesty. It doesn't help that most of his etiquette was learned from Sarah, which means the two regularly bicker like siblings. He gets better at it as the story goes on though.
- Put on a Bus: By Episode 4, he has left control of ARKS to Ulc and gone off on his own to search for a way to erase The Profound Darkness from all space and time. He returns in EPISODE 5.
- Unwitting Instigator of Doom: He sends you back in time 10 years to investigate Matoi's origins. Then when things are looking really dangerous he clumsily pulls you back to your own time, except the way he does it somehow puts you into contact with the Xion of 10 years ago, which explains how she knew to wait for your arrival at the beginning of the story. If that wasn't enough, Xiao ended up pulling Matoi and the Clarissa back to your time as well, with Matoi ending up in the Naberius forest. In short, this expedition to the past and Xiao's hasty emergency measures end up causing the entire plot!
A young human girl who is found weakened and unconscious on the planet Naberius by the Player Character. She has no memories and quickly takes to the Player Character as her main friend and confidant while recovering in the ARKS Medical Bay.
By Episode 2, her rehabilitation has progressed to the point where she begins combat training. In doing so she reveals an incredible photon capacity, to the point of being able to wield Clarissa, one of the uncontrollable Genesis Weapons usually restricted to the Council of Six. She even manages to cast Technics within an ARKS ship, a feat that is normally impossible. It is at this point she is called upon by Xion to aid her, alongside the Player Character. Towards the end of the Episode, Matoi's true identity is revealed: she is the legendary Clares Claes II, who disappeared ten years ago during a major Darker offensive against the ARKS. You travel back in time to that day, meeting and befriending her, only to witness her being stabbed by Persona. This releases a tremendous amount of corrupted Photons from Matoi's body, a force equivalent to The Profound Darkness that birthed the Darkers. However, she is able to save herself from being transformed by purging the corruption with the Clarissa, a process that inflicts great trauma upon her mind and body. She is then (accidentally) pulled to the future by Xiao, landing in the Naberius forest.
In Episode 3, Matoi officially joins the ARKS and joins the Player Character on an expedition to the Wutai planet of Harukotan, where a brewing feud between the Shironians and Kuronians gives her reason to suspect that someone may be manipulating events behind the scenes. At the climax of the episode, the Player Character is given a massive infusion of corrupted photons by Double in an attempt to awaken The Profound Darkness. However, Matoi pulls a Heroic Sacrifice by using the Clarissa to absorb the energy in your stead, transforming herself into an incarnation of The Profound Darkness. Though she insists on dying to complete her sacrifice, Persona uses the Clarissa to save her by extracting the corrupted photons and becoming The Profound Darkness instead.
In Episode 4, Matoi has been placed into cold sleep to slowly neutralise the massive quantity of corrupted photons comprising the spirit of Dark Falz Apprentice, which she absorbed from Aika to save her.
In EPISODE 5, Matoi rejoins the player to embark on a rescue operation to save Persona from the Profound Darkness. Despite not going as planned, the operation ultimately leads to the discovery of Omega. After Alma reveals how to access the world within, she assists Alma in enabling the player and Xierra to pass through the black hole to Omega.
- Amnesiac Hero: Halfway through Episode 2, it's revealed that Matoi has staggering photon potential, even going so far as to be capable of casting Techs on an ARKS ship where it's normally impossible. She's the legendary Klariskrays II, so this is a given.
- And I Must Scream: Matoi is clearly suffering very badly while she's resisting the Dark Falz transformation.
- Anime Hair: Her hair as Klariskrays II is looped like a bow. Try to figure out how to do and undo that style without ruining your hair.
- Another Side, Another Story: In addition to being the main heroine of Episode 2 and 3, she additionally stars in a 2017 spinoff manga that chronicles her adventures as Klariskrays II.
- Apocalypse Maiden: She eventually becomes The Profound Darkness after absorbing too many corrupted photons. Persona argues that due to Matoi's incredible photon capacity and innate desire to help others (by fighting Darkers), she is always destined to become The Profound Darkness no matter what.
- Beware the Nice Ones: It was mentioned in EP 2-6, that Matoi as the second Klariskrays, was so terrifying when fighting Darkers that fellow ARKS runs away from her. She also no-sell all of [Apprentice]'s attacks, taking her down singlehandedly in Lilipa before she was whisked away by Luther. In EP 0, Matoi literally tore [Apprentice]'s arm off and beat her with her own torn off arm. Currently, as a Guardian, Matoi had not yet indulged in her more ruthless streak, conversely, it could be said that most individuals, ARKS and non-ARKS alike (other than the Player Character) knows better than to piss her off.
- Incidentally, she is the one Io used in EP 4-1 to warn the Player Character away from doing 'weird' stuff, by warning that she will tattle to Matoi about their actions. Even if the Player Character have no problems outright snarking at Matoi, lecturing her and such, they chose to stop their actions. Admittedly, if one wishes to run herd on the Player Character, a Guardian, a fellow Guardian, i.e. Matoi, will be among their better bets.
- Big Damn Heroes: In EPISODE 4 Chapter 7, Matoi suddenly shows up for no apparent reason to help you and Hitsugi defeat ESC-A Falz Mother.
- Brought Down to Badass: When Dark Falz Apprentice launches an assault on an ARKS ship in AP 228, the 2nd generation Klariskrays is forced to give her Clarissa rod to a young girl she saves. Despite losing her weapon, she still manages to hold her own against Apprentice, and shows herself to be strong enough to break any normal weapon she tries to use.
- When she is given a replacement weapon, it is a fancy looking rod. In-game lore declares it to be the Clarissa III.
- Chekhov's Gunman: You find her at the very beginning of the story, but her true importance isn't revealed until the end of Episode 2.
- Cleavage Window: Her Episode 3 outfit "Edea Cluster" shows her cleavage and her stomach, combining this with Absolute Cleavage.
- Color-Coded Characters: Temporarily takes on the Dark Falz black-and-purple color scheme after she is transformed into a Dark Falz for about an hour.
- Combat Stilettos: Her Episode 4 outfit sports some extremely tall (and mighty uncomfortable-looking) heels that bump up her height several centimeters.
- Dark Is Not Evil: She's unusually proficient with Megid Technics. This is her most-used Technic element, aside from support Technics.
- The same cannot be said about the massive amount of Darker energy inside her.
- Deuteragonist: Becomes this by Episode 2, when a lot of the story that isn't related to a subplot begins to revolve around her.
- Early-Bird Cameo: Prior to Episode 4, had you completed Episode 3, Chapter 7, it was entirely possible, albeit very rare, to team up with Matoi on the field in her Episode 4 outfit, complete with a new Rod as a replacement for the Clarissa.
- Fighting Your Friend: Battles you in Episode 3, Chapter 7. Which form you fight, and the final outcome, depends on whether or not you sided with Persona.
- Get a Hold of Yourself, Man!: She manages to dispel the Absolute Order effect from Marlur, Oza, Risa, and Fourie without any real explanation. It can be inferred that this was due to her status as a former Council member though.
- Girlish Pigtails: Prominently sports them.
- Heroic Sacrifice: Matoi saves the Player Character by absorbing the corrupted photons and becoming The Profound Darkness in their place. She attempts to have herself killed in 3-7 to end the threat of The Profound Darkness once and for all until the Player Character goes against her wishes to save her.
- Heterosexual Life-Partners: This can be the implied case if the Player Character is female.
- Identity Amnesia: Because the Clarissa cleansed her memories, she cannot remember that she used to be the 2nd Generation Klariskrays.
- Image Song: Omoi Matoi and Promise to Shine.
- Impaled with Extreme Prejudice: Just when she thought you saved her from attacking fellow ARKS, she gets stabbed by Persona (as you!) halfway through their sword. Yikes.
- Later actually done by you when Persona holds Matoi down long enough to allow you to impale her with your Sword.
- Laser-Guided Amnesia: Suffers from this, knowing practically nothing except you, apparently. This is likely because you were such an important part of her past.
- Light 'em Up: As Klariskrays II, she primarily used Light technics. After her brief stint as The Profound Darkness, she returns to this as her primary method of attack.
- Morality Pet: To Persona
- Mysterious Waif: She knows absolutely nothing except your name, and behaves as such.
- O.O.C. Is Serious Business: When the local Shironians insist on calling her "miko-sama" and requesting that she help them, she snaps and chews out the Shironians in a rather pissed manner. She apologizes to you later, stating that she felt like being called "miko-sama" was demeaning to her.
- Put on a Bus: Thanks to Dark Falz Apprentice breaking loose at the end of the anime, Aika was forced to use her body to seal its essence to prevent its revival. When its essence becomes unstable, Matoi is forced to purify Aika, sending herself into Cold Sleep as a result.
- The Bus Came Back: Eventually comes out of Cold Sleep and re-unites with the player character at the climax of Episode 4 Chapter 5, but doesn't take a major role in the plot.
- Red Eyes, Take Warning: Averted; she has red eyes, but she's definitely not dangerous. Unless it was ten years ago when she was Klariskrays, then this trope probably applies for her enemies.
- Sad Battle Music: In her Episode 3, Chapter 7 boss battle.
- Sealed Inside a Person-Shaped Can: Matoi is able to host an incredible amount of photons within her body, making her an ideal can for The Profound Darkness.
- Ship Tease: With the Player Character, whether they are male or female, with the most notable example being in Episode 4, when Pietro referred to the both of them as "My Friend and her Partner", and Matoi's subsequent reactions to it, and the words "-well, there are times where I wish that was the case but if you were to just say it out like that-" for male characters and "-i understand that is means close friends between girls but if you were to just say it out like that-".
- Stripperific: Her outfit as The Profound Darkness is nothing but this.
- Sword of Plot Advancement: Matoi's Clarissa, which is the ORIGINAL Clarissa, unlike the in-game Klarisklays' one, which is a replica. Initially broken, you spend most of Episode 1 reassembling it. After it's restored, it becomes integral to a variety of plots.
- In Episode 1 Chapter 8, Gettemhult and Melphonseana lay claim to it and use it to awaken Dark Falz Elder, with disastrous results.
- In Episode 2 Chapter 5, Matoi regains the ability to summon the Clarissa, and uses it to unseal the final gateway to the Mothership's core.
- In Episode 2 Chapter 6, the sentient Clarissa uses itself to purify Matoi of the Darker corruption, cleansing her memories in the process.
- In Episode 3 Chapter 5, you and Matoi use it to escape from Dark Falz Double's Pocket Dimension.
- In Episode 3 Chapter 6, Matoi uses it to rid you of the transformation turning you into The Profound Darkness, and takes it for herself. Afterwards, Persona lays claim to the Clarissa.
- In Episode 3 Chapter 7, Persona breaks out that Clarissa he/she got last chapter to rescue both you and Matoi and become the new Profound Darkness.
- In Episode 4, and the anime, Matoi has a completely new version of Clarissa, Clarissa III.
- There's No Kill Like Overkill: After Persona jumps in at the last second to save her in Episode 2, Chapter 6, she Ragrants Apprentice and pins her against a building, then proceeds to launch so many Ilgrants shots at her that Apprentice explodes.
- Un-person: Xion destroyed all records of Matoi's existence. Actually a benevolent case since doing so protected Matoi from Luther.
- Walking Spoiler: Everything about her is practically a spoiler.
- Weapon of Choice: After she spends a few months in recovery, she picks up an affinity for Rods. As Klariskrays II and after Episode 2, she wields the Clarissa until it is destroyed at the climax of Episode 3. Afterwards, she gains the Clarissa III, which she wields post-Time Skip and in the anime.
A masked figure who frequently opposes the Player Character. Everything about him (or her) is unknown; even the name "Persona" is an alias. The only things that can be said for certain is that Persona fights like a Hunter would and wields the Coat Edge D sword as a signature weapon. It can also use double-sabers if deprived of its sword.
Persona's true identity is revealed at the climax of Episode 2: Persona is not only a Dark Falz, but a alternate version of the Player Character from another timeline. The final chapter of Episode 3 reveals that Persona comes from a timeline where he/she agreed to Mercy Kill Matoi after she became The Profound Darkness. Reasoning that Matoi would always choose to die in order to save the universe, Persona used the power of Dark Falz to travel back in time and carry out her wishes.
- Always Save the Girl: Averted, then played straight once the player gets to Screw Destiny. To honor Matoi's wishes, Persona, before he/she became Persona, was willing to kill her to save the universe. However, the player pulling a Heroic Sacrifice to stop Matoi from killing herself causes Persona to step in and save Matoi, even if it meant becoming the Profound Darkness his/herself.
- Anti-Hero: What Persona turns out to be.
- Badass in a Nice Suit: Although it may be part of its outfit, Persona has a suit-and-tie look going on underneath its armor.
- Badass in Distress: Stuck inside the Profound Darkness as its host. You and Matoi embark on a rescue operation to save him/her at the start of EPISODE 5, but it doesn't go quite as intended...
- Big Damn Heroes: In Episode 2 Chapter 2 (Episode 1 Chapter 8's secret third route), Persona does this for Dark Falz Elder to stop his destruction and buy him time.
- Persona also saves Klariskrays II from certain death. Subverted when he/she runs her through with his/her Coat Edge D.
- Black Knight: Invokes this trope, in that his/her black clothes lack any identifying features on it.
- Color-Coded Characters: Bears the signature black-and-purple color scheme of the Dark Falzes. However, while it is a Falz, it does not possess inherently evil intentions.
- Cool Mask: Wears it pretty much wherever, and it also gives it Falz-like hair. The only times it's not wearing it are when it's posing as you, during his/her farewell scene at the end of Episode 3, and during the Profound Darkness battle.
- Dark Action Girl: If you're female, Persona is this.
- Dueling Player Characters: It happens in the Extra Chapter of Episode 2, and in the final chapter of Episode 3.
- Emergency Weapon: In Episode 2 Chapter 6, after you grab a Gunslash and shoot the Coat Edge D out of Persona's hands, he/she summons the Coat Doublis D to fight with instead.
- Enemy Mine: In the Bad Ending of Episode 3-7, Persona convinces the Player Character to honour Matoi's wishes and Mercy Kill her (as The Profound Darkness). You team up with Persona in the subsequent battle.
- Enigmatic Minion
- Evil Counterpart: To the Player Character.
- Evil Me Scares Me
- Evil Sounds Deep: Depending on what kind of Voice Ticket you have equipped, it's possible to invoke or avert this for him/her.
- Evil Twin: Persona has your face, body, and outfit. This allows him/her to trick Klariskrays II into thinking that you're saving her, then impale her when she least expects it.
- Final Boss: Of Episode 3 as the Profound Darkness.
- Final First Hug: With Matoi, after purifying her of the corrupted photons.
- Good All Along: Well, it's you, after all. Just souped up on darkness and determined to help your best friend commit suicide.
- Heroic Sacrifice: At the climax of 3-7, Persona uses the Clarissa to absorb all of the corrupted photons that make up The Profound Darkness, freeing Matoi. This sacrifice is especially notable in that Persona finally goes against what Matoi wants: namely, to die so that the Player Character/Persona would live.
- Honor Before Reason: Persona is driven to fulfill Matoi's final wish at all costs, even though that wish is to die.
- Impaled with Extreme Prejudice: How Persona dies in the Bad Ending of Episode 3, sacrificing itself so that the Player Character can kill Matoi.
- Loophole Abuse: Since Persona is the Player Character from an alternate future, they possess the same affinity for negative photons, including being able to become the Profound Darkness. In the good ending of 3-7, they strip Matoi of that power and become it themselves, finally sparing both Matoi and the present Player Character from their horrible fates and giving them a fighting chance against the Profound Darkness. Even though they know they'll die and the player's hands, they're content in knowing they finally saved Matoi.
- My Rules Are Not Your Rules: Persona can block with a Double Saber. And return a Counter Attack if you strike its guard. Players can do neither of these things.
- Save the Day, Turn Away: At the end of Episode 3, Chapter 7 with Xion, although it's less of "saved the day" than "saved the life of a dear friend by taking back the bullet she took for me".
- Shaped Like Itself: Persona's kanji, 仮面, or "kamen", which means "mask". As in, the mask it wears.
- Split-Personality Merge Sort of. Assimilating the other Dark Falz avatars over the course of EPISODE 5 brings Persona back into the player character's mind.
- Stable Time Loop: Persona goes back in time and convinces the Player Character to kill Matoi, thus creating the next Persona. The true path of Chapter 3-7 has the Player Character use Xion's power to break the time loop.
- Time Travel: Persona can use this too, since he/she is also you.
- Vicious Cycle: Persona convinces the Player Character to help Mercy Kill Matoi, thus instilling the mindset for the Player Character to become the next Persona. The cycle finally breaks when the Player Character refuses to abandon Matoi.
- Walking Spoiler: As with all characters of unknown affiliation.
- Weapon of Choice: Its personal Sword, the Coat Edge D. If you're lucky, it may drop from Persona as a reward, allowing you to wield it. It also has a Double Saber, the Coat Doublis D.
- Well-Intentioned Extremist: Wishes to save the universe and spare Matoi the pain of becoming The Profound Darkness by murdering her prematurely. The Player Character manages to break the Vicious Cycle by refusing to go along with this.
A mysterious child who claims to be the original Dark Falz Apprentice. She holds beauty to an absolute ideal and detests what she considers to be the ugly state of the universe. She's the photonic spirit of a long-dead Photoner, and is indeed the person whose rampant vanity and loathing corrupted her into the first Dark Falz Apprentice. At the end of Episode 3-8, she transforms herself into the Genesis Weapon "Aurora", a pair of Twin Machineguns, for Euclita to wield.
- Affectionate Nickname: Refers to Euclita as "Euc-chan".
- Equippable Ally: At the finale of Episode 3, Chapter EX, she becomes a new pair of Twin Machineguns for Euclita. Euclita's Partner Card also wields Aurora.
- Flower Motifs: She wears flowers as hair decorations, and flowers appear on her dress.
- Heroic BSoD: She has a hard time coming to terms with the fact that Xion is dead.
- Impossibly Cool Clothes: She has the same "cosmos" design as Xion and Xiao going on in her hair decorations, ribbons, dress, and even her gloves.
- Pink Means Feminine: Her hair is a pale shade of pink, and the roses in her hair are bright pink.
- Token Mini-Moe: Usurps Io as the shortest character in the game. To wit, she's at least two heads shorter than Afin.
- Weapon of Choice: For Euclita.
- You Gotta Have Blue Hair: Has pink hair.
HadredA rampaging Chrome Dragon that escaped from the Central Research Department of Oracle. It appears out of nowhere in areas of high Darker activity, and is being hunted by a mysterious blue-haired girl (Zelsius Quna). Hadred is an artificial Quartz Dragon created by the Central Research Department from the unethical research of Aki, and is Quna's only lifelong friend. He was subject to horrific experimentation, giving him the ability to absorb Darkers and tear holes within space and time. When Hadred learned that the Death Squad (including Quna) had outlived their purpose and were to be disposed of, he went on a violent rampage that saw him break free and branded a "traitor" to be hunted by the very girl he wanted to protect.
- Background Music Override: If you take the right route in Episode 1 Chapter 9, Hadred is attracted to the arena by Quna's singing. The subsequent fight overrides Chrome Dragon's theme with Our Fighting.
- Enemy Summoner: He can summon Darkers with a mighty roar. After a while, he'll eat them to gain powers.
- Meaningful Name: Eternal Encore. Hadred likes it when Quna sings. He dies. Do the math.
- Mercy Kill: Quna is forced to put down Hadred at the end of Episode 1, both to fulfil her assigned mission and because Hadred has been irreversibly corrupted by Darker cells.
- Spikes of Doom: When powered up, he can summon large crystals that resemble spikes at the player. He can also summon spikes from the ground to impale you from below.
- The Speechless: Up until his death scene.
The original "Klariskrays" and one of the Three Heroes. A young and frail girl with a peerless affinity for photons, "Klariskrays I" was technically her Literal Split Personality with a body composed of pure photons.
After Alma's body was killed by Luther so he could acquire her ability to manipulate time, Klariskrays I granted her photonic body as a replacement. This allowed Alma's mind and soul to survive as a "spirit" of the Akashic Records.
- Affectionate Nickname: "Gi-kun" and "Ri-chan" for Regius and Maria, "Su" for Casra and "2nd Generation-chan" for Matoi.
- Audience Surrogate: The justification for Omnibus Quest involves Xierra showing to Alma a virtual recreation of the exploits of the player in the past (AKA EPISODE 1~3), thus catching Alma up to speed on the events leading to their present-day situation the same way as a new player. This is slightly twisted by Alma interjecting at the end of every Chapter to give her interpretation of the events of the Chapter and provide further detail based on her own history.
- Time Master: Alma has the ability to stop time. Casra referred to this power as "magic" and was, allegedly upset whenever anyone refers to this power as a "technic". Whereas Regius and Maria said that they have no idea what she was doing at all. She also has the ability to centralize her ability around a specific area, which is how the player is able to enter the black hole leading to Omega without being totally consumed by it.
A young adult who attends Tensei Academy, a Japanese high school and sister school to Seiga Academy, in the year 2028. She is a player of the hit MMORPG Phantasy Star Online 2, and a rising star of Tensei Academy's student council. When her avatar "Hitsugi" suddenly manifests in real-life as an amnesiac boy, she is unwittingly dragged into a plot that links the worlds of Earth 2028 and ARKS together.
- G.I.R.L.: Her Digital Avatar is male.
- Hair Decorations: She wears a sky blue ribbon tied in a bow to keep her hair in a ponytail.
- Healing Shiv: The main strength of her Embodied Weapon, after upgrading it to the Ame-no-Murakumo. She can use it to destroy the aether within someone without harming their physical body.
- Heroic BSoD: Hitsugi turns mopey for a while after her brother's dorm is destroyed in an explosion. Of all characters, Lisa helps her snap out of it.
- Leeroy Jenkins: When the two of you are confronted with a very dangerous threat, you are explicitly instructed to not fight. Hitsugi, however, doesn't get the message (literally) and blindly charges in with Gunslash attacks. Surprisingly, it works, but Hitsugi quickly realizes that she just royally screwed up.
- Next Tier Power-Up: After rediscovering her will to live, Hitsugi gains a new Embodied Weapon (the Ame-no-Murakumo) and the ability to manifest a Embodied Raiment like the Apostles of Mother Cluster.
- Only Mostly Dead: Hitsugi is actually killed for a few minutes after Kohri impales her in the chest with Gram. However, despite the injury being completely fatal, Aru senses that she's still barely alive, which is what enables him to heal her wounds.
- Sailor Fuku: On school days, she sports a very plain black and white one.
- School Uniforms Are the New Black: Played with. Her casual wear is a jacket over her school uniform. However, she has pajamas for home.
- Screw This, I'm Outta Here!: The moment she is free of the mysterious shadow, she opens the menu and hits Log Out without a second thought. Unfortunately, something followed her home.
- Situational Sword: The Ame-no-Habakiri, which she gains the power to summon after the ARKS place a ship in orbit around Earth.
- Weapon of Choice: The Ame-no-Habakiri, a katana based on the mythical sword used to slay Orochi. It's a weapon created by Hitsugi's imagination and formed into being from the aether network, much like the Phantoms of Mother Cluster. She later upgrades it to the Ame-no-Murakumo, one of the three Imperial Regalia of Japan.
A strange boy that Hitsugi suddenly finds in her room after an incident in the video game Phantasy Star Online 2. He has the physical appearance of Hitsugi's avatar, but is otherwise a blank slate.
- Accidental Pervert: Hitsugi decides to take him to a public bathhouse to get him washed. Hitsugi and Kōri manage to sneak him into (what they thought was) the women's side of the bathhouse and take note to blindfold him with a towel. However, because he can't see, he winds up groping both Hitsugi and Kōri at least twice.
- Anti Anti Christ: He was originally a Dark Falz.
- Cat Girl: Gender swapped. When he transforms into his Falz outfit, he gains cat ears and a tail.
- Digital Avatar: Hitsugi's. Or at least, she thought he was digital.
- Grand Theft Me: Mother temporarily hijacks his body to help the Player Character return to Earth and pull off a Big Damn Heroes on Hitsugi and pals.
- Hand-Hiding Sleeves: The sweater Hitsugi loaned him is too large for him, creating this effect.
- Humanoid Abomination: His true identity is a Dark Falz born from the corrupted photons expunged from the Player Character. It attempted to possess Hitsugi in PSO2, but because her body was actually a solid avatar composed of aether, and Hitsugi's mind was ejected when she "logged out", the resulting empty shell was Aru.
A member of Tensei Academy's student council, and a close friend to Hitsugi. She is a devout member of "Mother Cluster", a worldwide organisation of debuggers for the aethernet OS "ESCA".
- An Ice Person: Her element of choice is ice. When you fight her, her Desperation Attack involves dropping ice crystals that have a chance to inflict Freeze.
- Axe-Crazy: When she appears again in Chapter 4, she's been driven practically insane by Ophiel's brainwashing, and is wholly convinced that Hitsugi is an impostor.
- Brainwashed and Crazy: Thanks to Ophiel manipulating the aether in her body.
- Cloud Cuckoolander: She can be very "out there" at times.
- Cuteness Overload: This is her reaction upon meeting Aru for the first time. It's enough to scare him.
- Evil Costume Switch: Her Embodied Raiment after being made Brainwashed and Crazy by Ophiel. Later, she gets a Good Costume Switch after Hitsugi saves her.
- Hair Decorations: She sports a sky blue bow that ties a part of her hair up similar to Sarah's Side Pony, but keeps the rest of her hair down anyways.
- Ms. Exposition: When Hitsugi asks, she Info Dumps the history behind ESCA and PSO2 in a matter of minutes.
- Sailor Fuku: Going to the same school as Hitsugi, she also wears the same plain uniform.
- Secret A.I. Moves: When first fought in EP 4 Chapter 5, she uses powered-up modified versions of Sword Photon Arts, such as Over End and Sonic Arrow. When she then joins the party at the beginning of Chapter 6, she suddenly reverts to a normal Sword-wielder and can no longer access her boss moveset. Then she gets brainwashed, and in the ensuing rematch, she gets her boss moves back.
- Stepford Smiler: She was like this before she met Hitsugi.
- Super Strength: Becoming an Apostle apparently gives one the ability to effortlessly wield an oversized zweihander in a single hand.
- Weapon of Choice: Gram, a sword from Nordic mythology that Sigurd wielded to slay Fafnir. Although Gram is depicted as a gleaming gold and white sword, Kohri's version is tainted black and purple. Once she returns to the heroes' side, it becomes blue.
- Yandere: Even gets called this directly by Phul.
Hitsugi's older brother, who is shrouded in mystery. He and Hitsugi have a very on/off relationship thanks to his fondness for sarcasm. He is actually an aether-sensitive Earthling and member of "Earth Guide".
- Aloof Big Brother
- Big Brother Instinct
- Big Damn Heroes: Pulls a fast one on Bethor by jumping in at the nick of time and shooting his Phantoms down.
- Boring, but Practical: While Hitsugi and Kohri's Embodied Weapons take inspiration from blades of legend, Enga's is... a set of regular guns. They may not look flashy, but it lets him get around the issues that come with baring firearms.
- Curtains Match the Window: Red eyes to match his red hair.
- Dual Wielding: Submachine guns.
- Promotion to Parent: After the deaths of his and Hitsugi's parents.
- Weapon of Choice: Twin Machineguns and Assault Rifles. His weapons are based on realistic modern-day weaponry as opposed to the super-fancy stuff seen with ARKS.
A young Earth nobleman and the current leader of Earth Guide, an ancient and secret organisation of aether-sensitive Earthlings dedicated to preserving the future of the human race. They are opposed to the actions of Mother Cluster.
- Beethoven Was an Alien Spy: Ardem has taken many aliases throughout history in order to manipulate humanity, such as Merlin, Abe no Seimei and Paracelsus.
- Big Good: Earth Guide acts as this to Mother Cluster. Ardem mentions off-hand that Earth Guide is often called to act as neutral mediators between warring countries. Until Ardem kills Mother and steals her power for himself.
- Broken Pedestal: To Enga, after Ardem kills Mother to fuel his ambitions.
- The Illuminati: Earth Guide is basically this. Specifically, Ardem himself has secretly manipulated humanity for tens of thousands of years.
- Meaningful Name: Named after "Adam", aka the Original Man in Christian mythology.
- Non-Specifically Foreign: Ardem belongs to a noble family, but it's not specified exactly which country he's from.
- Restart the World: This is how he ultimately decides to usher in humanity's evolution.
- Utopia Justifies the Means: He kills the repentant Mother to steal her power and fulfill his ambition of forcing humanity to the next stage of their evolutionary development.
The heroine of EPISODE 5. A descendant of the royal family and future heir to the throne, Harriet is a headstrong young woman and warrior leading a resistance movement within Cuent, the Magic Kingdom. She ultimately fights to bring down the King of Cuent, her predecessor who has since been corrupted by the influence of the Ephemeral.
- Ambiguous Situation: Harriet was accidentally killed by Luther when she was a teenager, but it is unclear whether or not the current Harriet is the same one as before or a clone.
- Ascend to a Higher Plane of Existence: Her fate in the ending of EPISODE 5. In actuality, her soul is sent to the Oracle dimension, where she becomes a Genesis Weapon.
- Equippable Ally: Harriet is revealed to be the soul inhabiting Lisa's Genesis Weapon during the epilogue sequence, helping Lisa to fend off Shiva and her crew.
- Morality Pet: To Luther, who admitted that without Harriet's existence, he would had became like Lutz, and actively advocates Harriet's succession to the throne, bypassing his own. Because he finds himself unworthy to be the next ruler due to his hand in creating the Demon Castles, and sacrificing the lives of many for his research on the Ephemeral flower.
- Royals Who Actually Do Something: Leads a resistance from the front lines to take down the current King of Cuent. After the current King when mad from over-exposure to the Ephemeral flower.
- Warrior Princess: A princess leading a resistance to overthrow the current King of Cuent, have no problems commanding her army from the front lines, and can kick some butts when the situation calls for it.
The Omega counterpart of Luther. Although eerily similar to the since-deceased Luther of the Oracle universe, the Luther of Omega is a recreation of the original brought about by the dream of the Akashic Record. Although scheming, wise, and cunning, Luther is of royal blood, and is the elder brother to Harriet. He possesses deep information concerning the strange Ephemeral, and despite his personality, avidly works together with his younger sister to take down the King of Cuent.
- Dying as Yourself: After his Omega Angel form is defeated, Luther returns to normal and is given a peaceful death by Harriet and the player. The latter also absorbs the original Luther's record in the process.
- I Have You Now, My Pretty: He does this to Harriet after he kidnaps her and starts to lay down his plans for his final experiment.
- Morality Pet: His younger sister, Harriet, has stopped him from going too far in the past.
- My God, What Have I Done?: Luther inadvertently killed Harriet during one of his harebrained experiments to reach beyond the Akashic Record, which caused him serious grief.
- Royals Who Actually Do Something: Leads a resistance to take down the current King of Cuent, and the one to create the Buster Towers needed to take down the Demon Castles. He was also the one who researched and created the Demon Castles.
- Sealed Evil in a Can: Luther uses himself as a vessel to draw out and contain the Ephemera possessing the Red Dragon. This predictably has bad results, as the Ephemera he absorbs eventually drives him off the deep end and causes him to revert to his original Oracle personality.
- Spanner in the Works: Elmir would've been content to slowly eat away at Omega from the shadows and expand the black hole naturally, until Luther summoned him into the open, forcing him to take a more active role.
Lutz Cero Ray Cuent
The Omega counterpart of a powerful wizard from another universe. Once the Prime Minister of Cuent, Lutz ascended to the throne by killing the former king. Now the throne-bearer, he seeks to crush Harriet's resistance movement and unite Cuent under his iron fist via the power his country has mastered through the use of Ephemeral, the power to summon demons.
- Brainwashed and Crazy: Due to the Ephemera. He gets better once you and Alis seal the Red Dragon.
- Redemption Equals Death: After the Erythron Dragon is sealed away by the Laconium Sword, Lutz, his soul now free of the influence of Ephemera, expresses his regret at his actions and thanks Alis and the player for freeing him before disappearing.
The Omega counterpart of a legendary heroine from another universe. A servant to the throne and a legendary warrior princess within Cuent, Alis is a young woman who fights for what her heart believes in. Despite being under the command of Lutz, she ultimately sides with Harriet's resistance movement and wishes to bring down her corrupted king.
- Reasonable Authority Figure
- Red Baron: She is known across Omega as "The Maiden of the Sword".
- Weapon of X-Slaying: Alis wields the Laconian Sword, a blade known to be able to slay dragons.
The Omega counterpart of Gettemhart. Gettemhart is a warrior from the Verun Empire, a nation to the north of Cuent also engulfed in civil war. Although aggressive and abrasive, Gettemhart is generally seen as a good person by those around him, and is respected among the members of the small band of civilians that he and Melphonsina protect. He, too, seeks to overthrow the ruler of his land, Schlegger Verun, and ultimately end the fighting once and for all.
The Omega counterpart of Melphonsina.
A Dinian from the Hi Clan. He doesn't exactly favor the ARKS intruding on the Hi Clan's personal space, but lets it slide once Aki points out that only the ARKS can truly defeat the Darkers. He is forced to begrudgingly accept your help when his master, Hi Loga, goes berserk from a Darker seed and needs to be stopped. Curing the clan leader earns his trust, and from thereon appears to the player and his/her allies often when traversing the Volcanoes.
- White Mage: He's a Dinian. They specialize in healing themselves and their allies.
A Vol Dragon who acts as the head of the Hi Clan. When the player, Aki, and Right encounter him, he is under the influence of a Darker seed, forcing your team to take him down to stop the infection's spread and save his life.
- The Corruption: In Act 2 of the chapter, a Darker Seed spreads this within him, turning him berserk. Thankfully, you, Aki, and Right eradicate the seed before it can do further harm.
- Kill It with Fire: He's a Vol Dragon after all, it's their specialty.
- Standard Status Effects: Inflicting Freeze on him will cause his feet to freeze to the ground, temporarily immobilizing him.
- The Unintelligible: In-universe, he becomes this to Hi En when under the influence of the Darker Seed. Thankfully, he gets better.
A god-like being who acts as the head for the Ko Clan. She never appears in-person, as the player only ever hears her loud, booming voice. She means well for the ARKS, and sets you up against her faithful Quartz Dragon Ko Rera as a test of strength and worthiness.
- Meaningful Name: "Kamitsu" contains the word "kami", which is Japanese for "God". Appropriate, considering how she acts close to such for the Dragonkin of the Floating Continent.
- Power Echoes: Her voice does this.
- Voice of the Legion: A benevolent example; she only speaks like this, as she appears not to have a mortal form.
A vicious Quartz Dragon who attacks the player, Zeno, and Echo during an expedition to the Floating Continent. She is allied with Lo Kamitsu, and is also quite the Genki Girl. Lo Kamitsu pits you against Rera as a test of your strength and worthiness.
- Cute Bruiser: She may sound and act like a preteen girl, but she's still a freaking dragon. She can tear you a new one if necessary.
- Genki Girl: Definitely, if her manner of speech and actions weren't good enough indication.
- Light 'em Up: Her attacks that don't involve charging into you are Light-based, and can inflict Panic.
- Our Dragons Are Different: A crystal dragon with a body structure not unlike a jet plane and the speed and strength to match.
- Standard Status Effects: Inflicting Poison on various spots like her wings and horn covers them in a thick tar-like ooze, vastly decreasing their defense.
- Vocal Dissonance: Picture this: A fierce, crystalline dragon that can soar like a jet and hits like a truck, with the voice of a girl no older than 10.
A friendly Oceanid who appears several times during the player's expeditions on Wopal. He appears alongside Echo often, and generally serves as the butt of her punishment when he inevitably insults her in some way. He feels a mysterious connection to Luther, though he can't really explain why.
- Butt-Monkey: He's usually on the receiving end of Echo's punishment.
The Gray Medium of Halkotan. Revered as a living deity, she is tasked with maintaining the ordained divide between the White and Black Territories. She has an incredible amount of power to match her status, but prefers to spend her time lazing about.
- Authority Equals Asskicking
- Combat Hand Fan: Carries a pair of them, which are sheathed away as her hair decorations. The exact same fans are available as a Weapon Camo for the players.
- Huge Guy, Tiny Girl: One of the defining features of the Gray Medium is that she's a human-sized person in a world of giants. Her bodyguard Kotoshiro towers over her.
- Miko: Referred to one in the translation patch, but this not entirely accurate. The kanji used for "miko" in her title (神子) carry a slightly different connotation. She is more accurately a medium who directly converses with the Gods of Halcotan.
- Roaring Rampage of Revenge: When she discovers the truth of the Halkotan civil war, she attempts storming the Black Castle solo to carve a path to Double, quickly wearing herself down in the process. It's only when Kotoshiro arrives that she decides to leave the revenge to you and Matoi.
- Royals Who Actually Do Something: Despite having a bodyguard, Sukunahime is very capable on her own, as shown in her introduction cutscene where she banishes a group of Black Folk with a flick of the wrist. She also provides support against Magatsu with the Sukunahime's Divine Protection buff, which boosts jump height, HP, and PP.
- The Smurfette Principle: Sukunahime is the only relevant female on her entire planet. The only other Halkotanians ever mentioned that are female are Sukunahime's mother, who is only mentioned in passing during a story, and Guar Zigmorde, who is a Kuronian field boss.
- Teleportation: She possesses an ability known as an Ash Transfer, which allows her to move across distances instantly. She feels no need to abuse this ability and only uses it to enter or exit the scene.
The personal bodyguard of Sukunahime. He acts more like a liason between Sukunahime and the White Territory, carrying out the tasks she is too lazy to accomplish herself and relaying her peoples' wishes.
- Badass Baritone: With the voice of characters like Ragna the Bloodedge flowing through him, this is a given.
- Blind Weaponmaster: He has a blindfold over his eyes so we never see them, but is still perfectly capable of combat nonetheless.
- Bodyguarding a Badass: Sukunahime has quite a bit of power on her own, so it's a wonder why she needs a bodyguard in the first place.
- Huge Guy, Tiny Girl: If you put him next to Sukunahime, it's pretty darn obvious.
- Teleportation: After calling out the White King on his inaction, he is taught how to use the Ash Transfer that Sukunahime taught the White King. He proceeds to execute a Big Damn Heroes on Sukunahime when she's about to be assaulted by a group of cloned Kuronians.
- What the Hell, Hero?: He epically calls out the White King for his cowardice in refusing Sukunahime's repeated calls to action in regards to the Black Territory case when Sukunahime travels there alone to investigate the Double matter.