Mysterious Heroine XX

, Class Name , is a Foreigner-class Servant Universe Servant summoned by Ritsuka Fujimaru in the Grand Orders of Fate/Grand Order.
==Profile==
===Identity===
A version of Mysterious Heroine X from further in the future. She has taken up a job in the Servant Universe that involves hunting down Foreigners.Fate/Grand Order - Mysterious Heroine XX, Profile
A single meteor that came to destroy the Servant Festival. A delegate of the laws of the universe, she eradicates Earth's mankind and the Foreigners who shares the same attributes as herself. A peerlessly ruthless Machine Servant. It has been said that, when her unexpected true face is revealed, anyone will avert their gaze due to extreme astonishment―――? To put it simply, Mysterious Heroine X is the protagonist of a comedy-drama.
However, the Servant Universe came to a standstill and the proportion of heroes and villains crumbled due the excessive issue of Extra Classes. When the balance of the universe tilted towards the villains, X renewed her convictions. In more specific terms, the program embarked on a new season. Worried about being unemployed, X got herself a job on the secret society・Galaxy Police and coincidentally caught Rhongomynyad, the oldest artifact in the universe that was lying dormant at its center. Having her talents recognized, she began to play an active role as a space sentinel (Galaxian).
- extract from the 1st part of CG's story -
Upon becoming a Cosmic Sheriff, X thought "this is a good opportunity" and changed her name・family register​ to XX. By becoming a new person, she defaulted all debts incurred so far and established the Division 0 of Special Investigations, which cracks down on invaders from outer space - the Foreigners. The birth of the Evil Deity Hunter, XX. Her instinct as a Saber Hunter became dim, while her instinct as a Foreigner Hunter came to prominence. That being said, it is not like she quit her Saber elimination movement, so the special effectiveness against Sabers remains the same as always.
===Appearance===
Ritsuka Fujimaru claims that XX seems a little older than Mysterious Heroine X.
XX's Stage 1 appearance shows her in high-tech full body armor with flight capabilities. Stage 2 removes the helmet, revealing an otherwise unchanged Mysterious Heroine X underneath with most of the armor pieces intact. Stage 3 has all of the armor removed (supposedly because XX made it invisible), instead wearing a two piece bathing suit, blue cap, and a small long sleeve blue shirt.
===Personality===
Since she is basically Miss Artoria without her serious components, X behaves in the shortest・fastest・simplest manner regarding anything. Contrary to her energetic, polite conduct, she has a hopeless personality that hates to lose (due being unaware of this herself, her inability to read the mood is staggering), challenges pretty much everything and does not give up until she wins. Still, since she "ultimately ends up working for the sake of those around her" due being good person by nature, things functioned well at the end of the day.
====Relationships====
;Female Foreigners Servants
:Heroine XX distrusted the Foreigner Servants, possibly unknowingly seeing them as rivals for Ritsuka Fujimaru's affection, but ultimately dismissed them as a non-issue after finding only faint Saber signs in them.
;Mecha Eli-chan / Mecha Eli-chan MkII
:Although the Mecha Eli-chans aren't Foreigners and Ritsuka assured her that they're not evil, Heroine XX distrusts them regardless as they are both in the Threat to Humanity category.
;Mysterious Heroine X
:Seeing her younger self makes Heroine XX feel nostalgic and she considers her to be edgy and a handful.Fate/Grand Order - Mysterious Heroine XX My Room voicelines.
:"A Saber hiding infinite possibilities! There are some subtle differences with the me that is in my memories, but that’s a Universe-like plot hole. With the remake and different narrator (director), the episodes subtly change… As they please?!"
;Mysterious Heroine X Alter
:Heroine X Alter makes Heroine XX feel nostalgic to the point of tearing up. She asked Ritsuka to keep her a secret from her. Heroine X Alter found out about her regardless and despite her initial worry that getting close to her would bring the chronological order of the Universe in disarray, Heroine X Alter frequently invites XX over for snack time, though she usually refuses.Fate/Grand Order - Mysterious Heroine X Alter My Room voicelines. After becoming Mysterious Idol X Alter, X Alter finds Heroine XX easier to talk to than Heroine X due to them both being Foreigners.Fate/Grand Order - Mysterious Idol X Alter My Room voicelines.
:"…The resurrection flag is subtly rising… May there not be Mysterious Heroines A to Z…"
;Mysterious Ranmaru X
:Ranmaru X recognized Heroine XX, but initially believed her to be Heroine X's mother, only to be surprised to find out she was her future version instead.Fate/Grand Order - Mysterious Ranmaru X My Room voicelines.
;BB Pele
:"The first on the list of illegal Servants. Certainly, no matter how dangerous the event in the end she’s an ally of humanity, but… Everyone from Earth, aren’t you a bit too big hearted?"
;Okita Souji
;Ritsuka Fujimaru
:To Heroine XX, Ritsuka is her partner on Earth and a source of money should she run low on it. She also has a crush on them, but since she does not understand romance, she just treats them as a friend and frequently misinterprets her feelings for them as something else.
;Space Ishtar
:"And thus, the goddess of revenge became a normal Divine Spirit-type Servant. Happily ever after. Ah, but the story of the goddess isn’t over, it has to continue just a bit more."
;Van Gogh
:Van Gogh believes that Heroine XX must have it hard being an adult so she occasionally pours her a cup of coffee. Unfortunately, XX distrusts her for being a Foreigner despite of this, so they don't mesh well.Fate/Grand Order - Van Gogh My Room voicelines.
;Odysseus
:"Eh… What’s with that wooden horse. Are you really a Servant from Proper Human History?"
==Role==
===Fate/Grand Order===
====Summer Event: Servant Summer Festival!====
XX is sent to Hawaii by the Galactic Police to investigate a No. 3 Outer God reading. She crash-lands at Waikiki Street and immediately kills Katsushika Oei for being a Foreigner. BB fights her but is unable to defeat her due to using most of her powers protecting the tourists. Ritsuka’s party soon arrives and takes over for BB. They force XX to retreat and she flies off, promising to destroy ServantFes. At some point, she sets up a simple campsite at Kilauea.Fate/Grand Order - Servant Summer Festival!, Six Days Until ServantFesFate/Grand Order - Servant Summer Festival!, Wake Up! XX!
A few nights later, XX tries eating out at the restaurants on the Main Street. But the endless wait times infuriate her and she rampages, swearing to destroy everything. BB tries fighting her and is soon joined by Ritsuka’s party, who came from Waikiki Street after one of XX’s blasts blasted Blackbeard toward the beach. XX gets upset at BB calling her an evil Foreigner and attacks Ritsuka’s party . Thanks to her armor, she is unfazed by their attacks, so BB installs Pele’s Divine Core and helps the group. At a disadvantage, XX searches for the protocol of an optimal course of action when faced with interference from a local deity. However, reading conflict with a local deity carries a penalty of 100 years of reduced salary, she asks the others to pretend that nothing happened and flies off.Fate/Grand Order - Servant Summer Festival!, BB's Going To Be in Her Element
She attacks the convention five minutes before ServantFes starts. Ritsuka’s party fights her with the aid of Leonidas. Getting tired and hungry, XX decides to destroy the convention center by detonating her armor. Hassan of the Cursed Arm then arrives, having heard the commotion. After learning XX is going to self-destruct, he immediately takes her a safe distance away from the center before she explodes. Like everyone else on Luluhawa, she is also caught in the time loop created by BB.Fate/Grand Order - Servant Summer Festival!, The First DoujinFate/Grand Order - Servant Summer Festival!, Tick-Tock, Go Back
In the next loop, XX comes to the beach and prepares to attack Ritsuka’s party and Medb. However, to her and Medb’s surprise, the photographers who once surrounded Medb start taking pictures of XX, thinking that she’s doing tokusatsu cosplay. Ritsuka’s party drives her off with the help of Medb.Fate/Grand Order - Servant Summer Festival!, Under the Blue Sky, Work to the BoneFate/Grand Order - Servant Summer Festival!, Queen of the BeachFate/Grand Order - Servant Summer Festival!, Showdown: Foreigner!
When she attacks the convention center on the sixth day of another loop, Ritsuka’s party fight her with the help of Ibaraki-douji. Their strength baffles XX and she finds it conspiratorial that they see through all her attacks more and more every day. She decides to escape, but notices her armor came off during the fight. Admitting that she is a Galactic Police Servant, she tells Ritsuka, whom she addresses as the Master of Earth she met three seasons ago, that het targets are other Foreigners but says nothing beyond that. Because she’s close to them, she makes an exception and decides not to charge them with obstruction of justice. She then redons her armor and flies off.Fate/Grand Order - Servant Summer Festival!, Showdown: Foreigner II! 
On the first day of the final loop, Ritsuka’s party confronts XX when she is about to kill Oei. XX confesses her primary order is to eliminate the Foreigners, followed by ServantFes and the Singularity. The group defeat her and she realizes they’re also caught in the time loop. But she refuses to talk with them further, believing they’re on BB’s side, and leaves.Fate/Grand Order - Servant Summer Festival!, Showdown: Foreigner III! 
She later confronts Ritsuka’s party at the beach, greeting them in a more casual and friendly manner. Since they already know who she is, she no longer sees the point of using her previous militaristic demeanor. She only used such brutish and simplistic expressions since she isn’t supposed to have personal conversations while on the clock. Mash reminds her though that she is on the clock right now. XX lets slip that her hideout is in Kileau and takes a combat stance. Oda Nobunaga greets her, but XX initially mistakes her for Space Gawain until Nobunaga reminds her they raced together last summer. Nobunaga then angers her by saying she’s upset that she doesn’t have a swimsuit and by calling her armor cosplay. XX fully removes her armor and reveals she’s been wearing swimsuit the whole time. She then goes on tirade about how a toxic workplace the Galactic Police is and being sent to Hawaii on business while everyone else is enjoying their vacation. During said tirade, she lets slips why she was sent to Hawaii, though she believes the reading was a nonentity. With Nobunaga’s pity being the final straw, XX then attacks the group. They defeat her, so she decides to return to Kileau to wait for her true target to arrive on the seventh day. She leaves, warning that she will use her Anti-Planet Noble Phantasm to destroy Luluhawa on the morning of the seventh day.Fate/Grand Order - Servant Summer Festival!, Showdown: Foreigner IV 
Later that night, while eating Cosmos Noodles at her camp, XX notices her food supply is getting low. Disappointed that her food doesn’t reset with every loop, she complains about having to work part-time at the hotel in the morning to pay for lunch because she can’t exchange Galactic Police Dollars for local currency. She then says that if the people of Earth saw her now, she’d either die from shame or kill them. Ritsuka sneezing alerts her to their party’s presence, so after calmy cleaning up after herself, XX tries to kil the group for seeing her living in such squalor. Soon she removes a set of her armor and begins charging her Noble Phantasm. But right before she launches it, Nobunaga tells her she’s hired and says they’re trying to poach. She then has Ritsuka hand XX their working conditions agreement, knowing that she hates her current job. XX finds the conditions very agreeable and “accidentally” destroys the antenna she uses to communicate with Galactic Police HQ. Glad to be part of Chaldea now, she leaves to enjoy her paid vacation, saying she’ll answer questions tomorrow.Fate/Grand Order - Servant Summer Festival!, Showdown: Final Foreigner 
On the seventh night, XX arrives at Mauna Kea to aid Ritsuka’s party against BB, having heard her admittance that she is the Foreigner that was detected in Hawaii. BB proves too powerful for them and her shadow nearly consumes them, but XX stops her and uses her Noble Phantasm to confiscate the Outer God’s Authority. After Gilgamesh extends ServantFes by one day, XX takes BB into custody, promising they’ll both be back for tomorrow night’s party.Fate/Grand Order - Servant Summer Festival!, Door to Summer/Dark Mix
====Imaginary Scramble====
Fate/Grand Order: Cosmos in the Lostbelt - Imaginary Scramble: Great Void Sea Battle, Extra Act: Sea of the Foreign Deities (2/5) 
==Abilities==
Heroine XX was initially mistaken for the Foreigner manifesting in Hawaai, a monster Robin Hood isn't confident in taking down unless all the Servants attending ServantFes teamed up. Ushiwakamaru states that she seems different from Abigail Williams and Katsushika Hokusai. If anything, she resembles more Mecha Eli-chan. On the other hand, Osakabehime claims that she is even worse than Mecha Eli, making her wonder if Chaldea can actually beat her. Prior to the arrival of Ritsuka Fujimaru to the ServantFes, Heroine XX defeated Pele, causing the latter to lose all of her power.
===Combat===
In combat, Mysterious Heroine XX wields the double-ended lance Rhongomyniad LR. When using the spear of light, the spear of darkness in the opposite side generates a backfire, and viceversa. She is powerful enough to defeat and kill Katsushika Hokusai with just two blows. Furthermore, she can fire long range attacks from a hundred meters away. They are beams that resemble Caliburn strong enough to send Edward Teach flying long distances.
As shown in her fights against Summer Jeanne d'Arc Alter, Ushiwakamaru, Robin Hood, and Mash, XX can fight multiple Servants on her own simultaneously. Ritsuka Fujimaru's party was able to give XX a good fight every time, but they never really defeated her. They are unable to harm her due to her armor, so XX only ever withdraws due to her shift ending rather than due to being actually compromised. During their first match, Summer BB claimed that she would love to deal with Heroine XX, but she chose to use all her powers to protect the tourists attending ServantFes instead. Besides, she didn't want to ruin her swimsuit in a fight. If BB hadn't used that barrier in time, the entire area would have turned to rubble. In their next fight, Chaldea gets overwhelmed, and Robin Hood claims that they have no choice but to make a temporary retreat. Due to this, BB finally agrees to help them by transforming into BB Pele and fighting XX directly. Thanks to BB's interference, Heroine XX is defeated. Although BB claims she couldn't have done it without Chaldea, Jeanne Alter disagrees.
Ritsuka Fujimaru's party was also able to match XX with the help of Leonidas and the ServantFes convention staff. Their combined efforts make Heroine XX run out of steam fast, although she claims that it's due to not having had more than instant Cosmic Noodles for breakfast. This left her with no other choice but to detonate her armor to reduce the convention center to rubble. In another time loop, Chaldea's party and Ibaraki-douji managed to match XX once again. They were already familiar with all her tricks at the time, so they proved to be really tough opponents. Thanks to being able to see through all of her attacks, they managed to break her armor.
===Skills===
====Class Skills====
*Existence Outside the Domain (D Rank): Protection from the Farthest Ends, the extreme point at the exact opposite position of the Outer Universe. As a result, she became a Foreigner, but a Foreigner’s weakness is Foreigner so there’s no helping it. 「You throw a monster against a monster」
*Independent Action (A Rank): It’s unthinkable that she was a former Saber class, but she has inherited the skill she had in the class from before becoming a Foreigner without change.「That’s because, in severe missions, cool-headed self-assessment is required at times」, she herself is convinced with a triumphant look.
*Riding (A Rank): Not only can she do Cosmo-Surfing by riding the Holy Spear Armor Arvalon that has turned into flight form, but she can also steer the spaceship Dun Stallion II. However, since Mysterious Heroine X's Du Stallion II was destroyed by the Evil Goddess of Justice, XX now uses the as her primary ship.
*Cosmo Reactor (B Rank): The protection of the great Universe (plot armor) that draws towards herself victory’s principle of causality, but it has been ranked-down for being in the position of serving an organization.
====Personal Skills====
*Suit Up (EX Rank): The protection of the . The armor constantly exists around XX in the form of Spiritrons. With a speed of negative one second (where it can turn back time by one second to activate even if XX is taken by surprise) it protects and arms XX. She calls this little stunt "Suiting Up." ...Don't kid yourself, missy. This is actually an astonishing skill that XX acquired because she habitually overslept and was late for everything, even after joining the Galactic Police. It could actually be called a quick change skill. In fact, there's no real need for it, and it functions as armor in its spiritron state just fine. Arming oneself significantly increases their attack. The BGM changes when using it... It has a sad anecdote in which she made that specification but it was rejected because that luxury wasn’t allowed for XX alone.「You’re a swordsman Don’t pull an Assassin Put down That unruly hair on your head」 The armor is extremely durable, capable of withstanding multiple blows from Summer Jeanne d'Arc Alter, Ushiwakamaru, Robin Hood, and Mash without taking a single scratch. However, the combined efforts of Ritsuka Fujimaru's party and Summer Oda Nobunaga are capable of breaking her armor.
**Flight: Heroine XX can fly so fast Mash is unable to keep track of her.
**Self-Destruction: XX's armor has a self-destruction function capable of reducing the ServantFes convention center to rubble. However, this was prevented thanks to Hassan of the Cursed Arm taking her away before the explosion timer reached zero. Cursed Arm also survived the explosion thanks to his Protection from Wind skill.
*Detective's Instinct (E Rank): Divine revelation used to find culprits. The low rank suggests it's really not so great for solving crimes, though. Various hints to solving crime seem to stem from otherworldly inspiration completely devoid of logic. XX never really notices these hints though. It generates a load of critical stars, but at the same time XX herself deals with a star concentration minus. In some cases, this demerit becomes advantageous, actually making this a brilliant skill. She guesses the truth of the case with an 「I’ve got some insight!」, but it’s rank E so it becomes an incoherent conclusion. But that incoherent conclusion gives a revelation to the surrounding Humans, and reveals the culprit after circling around. Generating a load of stars but not giving them to herself is because of this image.
*Justice of the Ends of the World (A Rank): Power from the boundary, the most advanced and furthermost area of space. It tears away at nothingness, and is the true principle behind expanding space. It offers all but unlimited power, able even to repel even higher beings from outside the universe in order to restore balance to the universe. XX...doesn't really understand how it works. Adds invincibility penetration to herself, gains NP, and acquires 『special attack against Threats to Humanity』, truly a skill for the sake of a protagonist. Evil God Special Attack Artoria.
===Noble Phantasms===
Mysterious Heroine XX's first Noble Phantasm is Secret-Myniad. A galactic slicer that uses Rhongomyniad LR, a weapon said to be space's balancing scales. Swinging the spear around radiates Cosmic Ether in the form of light like a swirling nebula, which mows down all around it, friend or foe. It is implied to have been the Noble Phantasm XX used to defeat BBhotep.
Mysterious Heroine XX's main Noble Phantasm is Etherspace, Howbeit the Order, a dynamic Saber Slash performed after releasing the safe-mode of Rhongomyniad LR and increasing its output. Her Rhongomyniad is the flight of stairs pointing the way to the literal end of the universe. By releasing it, it will paradoxically indicate the battlefield has become the end of the universe. More specifically, the area will start to look more like an . It is powerful enough to explode the opponent along with the planet itself. Due to this, she regards it as an Anti-Planet Noble Phantasm strong enough to destroy an entire Singularity. Furthermore, it deals special attack against not only Foreigners, but Sabers as well. Ishtar Ashtart claims that XX's spear hurts a lot.Fate/Grand Order - Ishtar Ashtart's Voice Lines
==Development==
===Creation and Conception===
Mysterious Heroine XX was designed by BUNBUN in Fate/Grand Order.
===Comment from Illustrator===
"XX has big changes with Ascension, and since there are almost no common parts between each Ascension design, I drew each Ascension separately. While thinking that all of the transformations are striking, so I hope everyone likes any of them… in the end, she become a somewhat awesome character. During the work her last Ascension is the one who covers the least, but seeing her popularity the smile is the best!" (BUNBUN)
==References==
Category:Characters in Fate/Grand Order (Part 2) 
Category:Foreigner-class Servants
Category:Servants
Category:Servant Universe Servants
Category:Saberface
Category:Swimsuit Servants
Category:Star Attribute Servants
Category:Lawful Good Servants
Category:Dragon lineage
Category:Parody characters
Category:B rank Strength Servants
Category:B rank Endurance Servants
Category:B rank Agility Servants
Category:E rank Mana Servants
Category:D rank Luck Servants
Category:EX rank Noble Phantasm Servants
Category:Servant Universe Inhabitants
Category:Brynhildr's Beloved
Category:Sovereigns
Category:Introduced in 2018
Category:Voice - Ayako Kawasumi
Category:Artoria variations