Mysterious Heroine X Alter

, Class Name , is a Berserker-class Servant Universe Servant summoned by Ritsuka Fujimaru in the Grand Orders of Fate/Grand Order.
==Profile==
===Identity===
She was trained by a version of Master Agravain, having been created by the Dark Rounds as an artificial Servant using Mysterious Heroine X's "X Gene". An orphan Villain (bad guy) that came visiting from the Servant Universe. The last survivor of the now destroyed chivalric order of darkness - Dark Rounds. The title bestowed to her is Sir Pendragon. Burning the prana converter reactor Altereactor, an Anti-Anti-Saber Decisive Weapon that sworn to defeat Mysterious Heroine X. X Alter herself is unaware of this, however, as the impending defeat of the Dark Rounds by Professor Babbagen forced Agravain to seal away her memories so she could act as a sleeper agent until the time was right for her to rejoin the League of Villains. In a convoluted series of events, this resulted in her becoming Heroine X's high school roommate. 
The vroid "K6-X4" (aka. Black Knight-kun) is always watching her, who made such vow, from the shadows. One can also say he is casually hiding from work.Fate/Grand Order - Mysterious Heroine X (Alter) profile, Translations by Master of Chaos
===Appearance===
===Personality===
A very unusual intellectual Berserker.
A diligent girl with an unassuming attitude. Her favorite food are sweets. A glutton character who requests high-class Japanese candies whenever she gets a chance, thus costing quite an amount of money. She spends her days off reading or listening to music, without taking a single step outside of her black, round table-type .
Fundamentally, a sloven person who tends to think of most things as bothersome. Yet, she strangely follows the orders and instructions from others with relative obedience, even while replying with sarcasm. She is quickly lured with sweet things.
Her prided sword "Wicked Holy Sword, Necrocalibur" was bought from a shady mail order.
====Relationships====
;Mysterious Heroine X / Mysterious Heroine XX
:"X-san was my very first friend. I hope I can give her my thanks someday. Oh, no, not like that. But I wish she'd hurry up and clean our room. This is why I can't stand chaotic alignment types..." Fate/Grand Order Lines
;Mysterious Heroine X 
:"Ah… X-san. There's no other person as annoying and troublesome to have nearby. Master-san, you're quite calm. If there's a trick please tell me. In detail, plainly!"
:"X-san is my great friend. I’ve learned a lot of her who pushes forward without reflecting about danger. ……In front of her as a nemesis, I cannot keep calm. My instincts shout to defeat her."
;Mysterious Heroine XX
:"Mysterious Heroine XX, -san…?! Whoaaa. The chronological order of the Universe is in disarray! Should I stay away from her as much as possible? …But, you know, compared to that one she seems quite easier to talk to… We're strangely fellow Foreign ── Sabers. Mumumumumu…"
:"Sometimes I invite her to join me for snack time (she usually turns me down though, but that's okay). It's interesting to watch XX and her somewhat suspicious behavior. During moments like that is when I'm glad I came to Chaldea."
;Artoria Pendragon Lily
:"I can't stand that white knight, the Saber who claims to be X-san's disciple...Just the thought of it makes me hungry to the core...I couldn't resist, so I just hopped on Galactic Amazonu and ordered some strawberry delivered via sub-light flight."
:"A difficult to deal with opponent. Just looking at her crushes tightly the stomach of my heart but, why do I yearn bean daifuku so much?"
;Alter Servants
:"Oh, I misjudged you, Master-san. Just now I saw one of my fellows. Yes, when it comes to Heroic Spirit summoning, everything begins with Alters and ends with Alters. And once you start down the Alter path, forever will it dominate your destiny."
;Elizabeth Báthory
:"Elizabeth-san is Earth's idol. At first glance, it seems like she's holding three programs at the same time, but each one of them has a proper self. ...She's strong. As an idol, as a Servant, I want to be like that. ...But, doesn't she resemble a bit the Venusian Beast that destroyed the Venus civilization?"
;Amazoness CEO
:"Amazoness CEO is God. God. ...However, the deliverer for my regular service of Starburst Japanese sweets looks more emaciated every day... Is that okay? Is working mornings, afternoons and nights too much after all...?"
;Wolfgang Amadeus Mozart
:"Music Demon Amdusias P... Did you let such fearsome potential threat run loose, Chaldea… That's a super-terrible terrible thing. ...He's different as a Servant? No no, I won't be deceived."
;Frankenstein
:"A fellow from the Servant World, I’m relieved that the atmosphere around Admiral Fraulein Fran hasn’t changed. Because of our mutual consciousness of energy saving and that we communicate with breaths like “Ah” “Uh” we immediately felt sympathy for each other. Sweet like , she feels a bit stinging."
;Nikola Tesla
:"The Captain☆Nikola in the Servant World, my superior officer so to speak. In terms of villainy, he’s not a bad boss. How to say it? It’s like his head is full of lightning."
;Tamamo-no-Mae
:"She is involved in something, the strict yet gentle owner of the kotatsu room. When I told her that if I had a mother she’d definitely be like her, she was blown away. Refreshing like June, she wraps fluffily like ."
;Voloid “K6-X4”
:"The exclusive Voloid I named “Black Knight-kun”. For some reason it’s been around me ― since I can remember. Its personality is mean, quite fierce. If it has the chance, it’ll try to rebel against its master. Well, you can make it surrender by force, though."
;Miss Crane
:"She is a miraculous person who created a unique outfit that can only be worn by me. It wouldn't be wrong to call her a villain would it? Anyway I have to make sure I repay her."
;Medb and Tamamo Cat
:"That's right. They are important friends and great rivals. Are they doing well under the sky of a different space-time? As for me, I'm still singing today."
==Role==
===Fate/Grand Order===
====Mysterious Heroine X (Alter) Trial Quest====
On Planet Lothian, X Alter is talking with Ritsuka, addressing them as K6-X4. She is concerned when they don't reply since she may need to rely on them during battle. She mistakenly interprets their question as they wanting a dumpling, which she already ate. Considering their conversation protocol strange, X Alter checks K6-X4's circuits when Agravain appears. He informs her that they'll need to go into hiding for a while since their enemy's pursuit is growing more aggressive each day. X Alter asks to join him, but Agravain says he has a more suitable job for her. Since few knew of her in this region of space, they can take advantage of that to prepare to retaliate. Agravain confesses his fellow lords have fallen and only he remains. X Alter responds she will not let the sacrifice of the great lord of Villains to be in vain, declaring she'll defeat their sworn enemy, Mysterious Heroine X. But Agravain tells her that she will go into hiding, and go on a journey alone while they lie in wait. X Alter wants to stay by his side, however, not wanting to be alone. Agravain merely tells her to find a job to her dismay. X Alter asks if this means they'll no longer communicate Babbagen infiltrates the castle. X Alter readies to destroy him, but Agravain tells her to go to a new land and search for a superior Master. He then uses Black Knight's Black Hand to seal away her memories, its effects becoming activate in a few days. Saying her goodbyes to him, X Alter goes to the escape pod bay with K6-X4.Fate/Grand Order - Mysterious Heroine X (Alter)'s Trial Quest
There she tells K6-X4 to navigate the escape pod when Babbagen's drones intercept them. After breaking through, the pair escape and warp away from the planet.
An unknown time later, X Alter meets X and asks her where she is. X answers she is at Cosmo-Chaldea High School where many young students dream of becoming tomorrow's SSR Servants. X Alter realizes it isn't the place where elite Masters can be found. The school principal, God Bless Edison, appears to scold X for skipping class to eat again. X tells him she's going to give X Alter a tour, assuming she is a transfer student. She then asks for X Alter's name, but the latter can only recall "Ex". Edison informs X Alter that she'll need to meet certain qualifications if she wishes to enroll. X Alter decides she wants to enroll to become a great Servant. Considering her words to be sincere, Edison says she passed the first entrance exam. He then has her and X do a mock battle, and he'll judge her enrollment based on the results. After the battle, X Alter is enrolled in the school.
She later enters X's dorm to see her taking out her aggression on K6-X4. She informs her they'll be roommates starting today to X's dismay. She then sets up territories and removes X's soda from the fridge to stuff her snacks in there. X believes she is taking over her room and readies to fight her again. X Alter then protects K6-X4 from X's attack. They get ready to fight when they're interrupted by the Student Dormitory Supervisor who kicks RK6-X4, which somehow results in their voloid body being accidentally cut down by X.
Sometime later, X Alter and Edison wait for X, who seemingly disappeared with the increased number of Heroine Zs, to return. X Alter notes how X's absence is a sigh of relief for the Saber students.
Later in her room, she asks K6-X4 what she should do. She then recounts vague memories of her time with a friendly member of the Black R.O.U.N.D.S. Someone knocks on the door, but they do not enter when X Alter permits them to enter so their conversation can't be recorded. Calling themselves a student, the person states Villain Alliance spies are everywhere, including the school. X Alter is relieved and considers them to be an elite agent. The person tells her that those who believe her potential are waiting, and a large-scale attack by the Villains will soon commence. They also say X will not return, and even if she did, she wouldn't be able to repel the attack. After they leave, X Alter realizes she needs to leave the school.
Later at night, X Alter calls Babbagen out to the schoolyard. She asks him the details of his battle with a dark lord on Planet Lothian since such confidential data isn't found in the school's database. Babbagen replies he cannot reveal such information to a student, so X Alter decides to rip out and read his memory media herself.
After he is defeated, Babbagen considers X Alter to be one of his best students for finding the weak points in his armor. While not fully understanding the situation, he realizes she is leaving. X Alter confesses that while she couldn't her hatred for him, she truly enjoyed his lectures. Babbagen then reveals it was Agravain with whom he fought. He also reveals Agravain created the Heroine Zs as failed artificial Servants and unsuccessfully searched for a crystallized form of Magecraft. He says Agravain fought valiantly and fell into the castle's reactor core, though whether it was accidental or intentional is unknown. After the castle collapsed, he and others conducted a thorough search, but they were unable to find Agravain's body nor the ceremonial rites for creating artificial Servants. Babbgen collapses, but X Alter finds herself unable to finish him to complete her vengeance.
Villain Alliance agents then arrive, ready to pick her up. One realizes X Alter clearly understands the situation despite the reports saying she lost memories. X Alter regains her memories. An agent welcomes her as the newest member of the Villain Alliance to serve him directly. X Alter accepts and requests she be allowed to bring K6-X4 with her. The agent agrees to give her 90 seconds with K6-X4 before they leave.
X Alter tells K6-X4 that they have a tiny shard of crystallized Alterium embedded in their head to track her. The crystal was receiving mana waves leaking through the cracks of multidimensional space. She considers it coincidental that they would be on the same wavelength as someone else's mind (Ritsuka). She readies to remove the crystal since information leaks and unknown elements aren't permitted in battle. Before that though, she tells Ritsuka goodbye and hopes they can meet when she makes a name for herself as a Servant. She then removes the crystal, telling Ritsuka that may the Alterium be always with them.
==== GUDAGUDA: Meiji Restoration ====
X Alter appears under the name Akashi Ex as one of the Servants summoned by Andras to serve Oda Nobukatsu. She defends the Sun Fortress against Ritsuka’s party while Nobukatsu sacrifices Chacha to Andras. Ritsuka’s party defeats her and Andras’ other Servants.Fate/Grand Order - GUDAGUDA Meiji Restoration, Section 5: The Secret Emiyamaru
==== Event: Oni Pagoda Festival ====
X Alter is on the 80th floor of the Oni Pagoda with EMIYA, Tawara Touta, Boudica, and Parvati as they prepare a feast for Tomoe Gozen at Shuten-douji's request. But since she gets all her nutrients from Cosmos Rations, she is only interested in dessert. The situation devolves into a fight, however, when Tomoe arrives and refuses to partake to proceed to the next floor. Ritsuka's party then proceed to defeat X Alter and the others.
==== Valentine Event: The Bountiful Chocolate Gardens of Valentine ====
X Alter was in the Servant Universe when she heard about Chaldea's cacao shortage. Upon hearing this, she headed to Spacebucks to restock on some cacao. When she got to the shop, though, she won a chocolate starship for being their eleventh customer. She then took the ship on a one-way trip to Earth, crashing it into the Hanging Garden of Babylon. Semiramis is initially mad until she realizes the chocolate is of high quality and thus will allow it to be blended with the chocolates being made at the Gardens. X Alter agrees to trade it in exchange for Japanese sweets.
====GUDAGUDA: Legend of the Imperial Capital Grail====
X Alter joins Chacha as one of her Seven Imperial Spears.Fate/Grand Order - GUDAGUDA Strange Tales of the Imperial Holy Grail, We the Imperial Capital Seven Spears When Ritsuka’s party confronts her, she introduces herself as Hirano Ex and the manager of Dark Rounds, “the hot new sweets cafe that’s sweeping galaxy.” After selling a bean sponge cake to Okita Alter, she voices her realization that as manager she will get to eat any of the sweets herself. So she decides to defeat Ritsuka’s party and make them her replacement. She, however, becomes the sixth and final Spear they defeat.Fate/Grand Order - GUDAGUDA Strange Tales of the Imperial Holy Grail, Short Soy Terrible Milky Light Straight...
====SABER WARS II====
X Alter appears briefly in SABER WARS II.Fate/Grand Order - SABER WARS II - To the Beginning of Space, Sargasso Abyss IIFate/Grand Order - SABER WARS - To the Beginning of Space, Primitive Red RoseFate/Grand Order - SABER WARS II: To the Beginning of Space, Return of Refugee X
She appears before Mysterious Heroine X after the latter suffers a near fatal injury defeating Sigurd the Dragonslayer Sword. As hinted by Mysterious Heroine XX’s lines in My Room, MHX Alter is dead in the Servantverse. She doesn’t mind, as thanks to the afterlife’s mechanics, MHX Alter is able to generate as many snacks as she wants. MHX is relieved to see her rival again, then jealous over her newfound ability and attempts to kill herself to get free food. MHX Alter blasts X with a new technique called “Searing Dumpling Fire” to discipline her.
==== Event: Bedazzled! Grail Concert! ====
====Interlude====
=====XXXX. Mysterious Heroines=====
Ex and Heroine X go on an adventure.Fate/Grand Order - Mysterious Heroine X Alter's 1st Interlude: XXXX. Mysterious Heroines
==Abilties==
Mysterious Heroine X Alter is a Berserker formed using the X Factor as a Catalyst. She is the prophesied child of destruction, and Master Agravain claims she is the Servant Universe's strongest and final Alter. She became a one-of-a-kind heroine by piling enhancements atop enhancements. 
===Combat===
Evil Holy Sword Necrocalibur.png|Evil Holy Sword Necro-calibur
MHXAlterTwinBlade.png|Evil Holy Sword Necro-calibur's twinblade form.
In combat, X Alter uses the Evil Holy Sword Necro-calibur. It is the Servant Universe's Ultimate Anti-Anti-Saber Weapon. Although it is a blade that would evetually be capable of even cutting through a planet, it hadn't fully matured when it first appeared in Fate/Grand Order. Bought through suspicious mail order, Master Agravain states they were foolish to believe in the specs written in the catalog. However, by the time Alter's first interlude takes place, Ex states that just like Mysterious Heroine X, she is known as an agent capable of single-handedly destroying entire planets in the course of their missions. When the two of them worked together, they could limit the collateral damage to a single planet. The sword can also be freely changed into a twin-blade or a chainsaw, but it often breaks and explodes. Besides her sword technique, she freely uses the psychic power “Alter Choke”, mana released from the end of her arms “Alter Lightning”, and various techniques that look as if you’ve seen them somewhere else.Fate/Grand Order - Mysterious Heroine X Alter animations In addition, she also has a technique called "Searing Dumpling Fire", which fires hot blasts at the opponent, mostly using it to punish Mysterious Heroine X for becoming distracted or interrupting her during training.
Mysterious Heroine X states that because X Alter closely resembles her, she did poorly against X Alter in her mock battle. After all, she was holding back, whereas X Alter was really going all-out. X Alter regards X's sword moves as "weak beams." In their next scuffle, X says that although Alter is a nerd, her swordsmanship is spot-on and that she actually senses that she has had some formal training. As all Saberfaces are Saber's in X's eyes, whether they be Assassin or Berserker, she finally gets serious against Alter. Their fight is interrupted by the Girls's Dorm Supervisor. The reports from their fights reached other members of the Villain Alliance making them believe Alter had great fighting potential. They decided to intervene with a large-scale attack, a Death Tour with enough power to destroy an entire planet. Even X could not save the servant school from that.
Mysterious Heroine X Alter was able to utterly defeat Professor Babbagen by accurately pinpointing his armor's weakness until she eventually stopped his left and right manipulators stopped. The amount of damage he sustained was critical damage.
Lancelot the Darkened Sword is said to have been defeated by Mysterious Heroine X Alter at some point in time before the events of SABER WARS II.
Mysterious Heroine X Alter is able to reach the place beyond the , what some call the "Land of the Dead." Using her "mysterious powers", Dark Ex throws Ritsuka Fujimaru back in time a little bit to before Ashtart Origin released her Saint Graph Galaxy, opening Bel Maanna's gates and returning every life-form in that Forbidden Zone to nothingness. She shows these powers again when she returns Mysterious Heroine X back to the land of the living, after teaching her a new XEX skill with which to defeat Ashtart Origin.
===Skills===
====Class skills====
*Altereactor (A Rank): By means of the rare element Alternium, energy of various things is transformed into Magical Energy. Mainly sugar. An Alternium crystal embedded within her Mana Conversion Altereactor Engine converts calories into magical energy. "Japanese Wasanbon sugar's elemental balance has the best conversion rate. Oh, and I want green tea," she emphasizes.
*Mad Enhancement (C Rank): Apart from the imposed mission, her “Berserkerness” is now fading away.
====Personal skills====
*∞ Black Bean Paste (EX Rank): A mysterious item in which the six primitive powers 『Desire (soul), Sugar content (power), Sales location (space), Cost price (reality), Production (time), Demand (mind)』 have been kneaded. It grants infinity power to the one who has it, as to turn half of the universe into a confectionery factory with one fingertip, but it seems she doesn’t know it well. Old name: 『∞ Chocolate』. (“Tohsaka, I don’t feel so good”).
:*∞ Chestnut Paste (EX Rank): Upgrade from ∞ Black Bean Paste. It summons swordfighters from other worlds. She used it to train Mysterious Heroine X and make her awaken a new killer move, the Galactic Meteor Sword XEX.
*Instinct (C Rank): Although it seems she idles her time away every day, in truth she was quietly getting deeper in the thoughts that lead to the meaning of enlightenment... It’d be nice if that was like that, her insatiable and lazy mind that vaguely seeks a wish, has further refined and pushed her sword technique to the extreme. (So she can sword good because she’s too lazy? I guess it’s something like “let’s finish quick so I can go home”).
:*Instant Shadowless Sword (C+ Rank): Upgrade from Instinct. 
*King's Invisible Hand (C Rank): Dark teachings about how to be an emperor taught by the teacher Master Agravain. While reading the flow of battle, controlling equals from the shadows, the essence is in various wiles trying to bring out their capabilities to the utmost. (If I understand it correctly, it’s something like Charisma but a la “mysterious super-villain whose face is shadowed until he decides to fight the main characters personally”).
===Noble Phantasm===
Her Noble Phantasm is Cross-Calibur.
==Alternate Saint Graphs==
Alternate Saint Graphs that affect the Servant's abilities and class.
===Mysterious Idol X (Alter)===
, Class Name , is a Foreigner-class Saint Graph created by Miss Crane. 
====Abilities====
Class Skills:
*Existence Outside the Domain (D Rank): A freeloader from the Servant Universe.Fate/Grand Order material XII - Mysterious Idol X (Alter) Profile translated by IreyimikaTheLost at Reddit
*Mad Enhancement (C Rank): No Information Available.
*Altereactor (B Rank): Through the use of the rare element Alternium all sorts of energy can be converted to magical energy, though it only lasts for a minute. She'll work harder if the a message is attached to the offering.
Personal Skills:
*Superb Round Dancing (B Rank): Servant's transcendent skill. A precise and spectacular performance released at full power well beyond a human's perception and physical abilities.
*Infinite Regress Lyric (C Rank): A method of cracking by singing following magical rhymes that acts strongly against theoretical thinking, specially against AIs and machines.
*King's Singing (C Rank): A blessed singing voice which heals people and causes miracles, commonly called "Royal Touch".
Noble Phantasm
Her Noble Phantasm is Lumino-Calibur.
==Development==
===Creation and Conception===
Mysterious Heroine X Alter and Mysterious Idol X Alter were designed by BUNBUN in Fate/Grand Order.
Her scenario writer is Meteo Hoshizora in Fate/Grand Order.
===Comments from Illustrator===
"As a Berserker version of Mysterious Heroine X, initially I thought she’d be a Berserker version of a woman that will absolutely kill Sabers from another side but after several exchanges, a Berserker from an unusual literature was born. What do I mean? There aren’t many tsukkomis but when angered please take something sweet, have a cup of tea and calm down." (BUNBUN)
"Idol Ecchan, but she's also a singer-songwriter that was the image I had in mind when designing her. The basic outfit is white in contrast to the usual Alter image, while her other outfit, designed in the image of a diva, is black. I was excited to put my daughter in a normal idol outfit but that hat might have been a bit too much. (laughs) (BUNBUN)"
==References==
Category:Characters in Fate/Grand Order (Part 1.5)
Category:Berserker-class Servants
Category:Saberface
Category:Parody characters
Category:Servants
Category:Alter Servants
Category:Servant Universe Servants
Category:Heroic Spirits
Category:Neutral Evil Servants
Category:Star Attribute Servants
Category:Dragon lineage
Category:A rank Strength Servants
Category:A+ rank Mana Servants
Category:B rank Endurance Servants
Category:C rank Luck Servants
Category:B rank Agility Servants
Category:A++ rank Noble Phantasm Servants
Category:Servant Universe Inhabitants
Category:Sovereigns
Category:Introduced in 2017
Category:Knights of the Round Table
Category:Voice - Ayako Kawasumi
Category:Artoria variations