Mysterious Heroine XX

This is a Limited Servant

They are only available during special summoning campaigns. When no such campaigns are active, this Servant cannot be summoned.

This article is about 4★ Mysterious Heroine XX. For other variations, see Artoria (Disambiguation).

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★ ★ ★ ★

Mysterious Heroine XX

Japanese Name: 謎のヒロインXX
AKA:AKA:Also Known As Heroine XXHeroine XXBattle Name, MHXX, Mysterious Heroine X (Foreigner)
ID: 222	Cost: 12
ATK:ATK:Servant's minimum and maximum attack stat without Status Up Cards. 1,625/9,751	HP:HP:Servant's minimum and maximum HP (Health) without Status Up Cards. 1,800/11,250
Lv.100 Grail ATK:Lv.100 Grail ATK:Servant's maximum attack stat with Holy Grail at Lv.100 without Status Up Cards. 11,806	Lv.100 Grail HP:Lv.100 Grail HP:Servant's maximum HP (Health) with Holy Grail at Lv.100 without Status Up Cards. 13,640
Lv.120 Grail ATK:Lv.120 Grail ATK:Servant's maximum attack stat with Holy Grail at Lv.120 without Status Up Cards. 13,862	Lv.120 Grail HP:Lv.120 Grail HP:Servant's maximum HP (Health) with Holy Grail at Lv.120 without Status Up Cards. 16,031
Voice Actor: Kawasumi Ayako	Illustrator: BUNBUN
Attribute: Star	Growth Curve: Reverse S
Star Absorption: Star Absorption: Tooltip for 25px|bottom|link= Star Absorption:ⓘAffects how many critical stars this servant gets when the stars are distributed. 147	Star Generation: Star Generation: Tooltip for 25px|bottom|link= Star Generation:ⓘAffects how many critical stars this servant generates when attacking. 15%
NP Charge ATK: NP Charge ATK: Tooltip for 25px|bottom|link= NP Charge ATK:ⓘAffects how much the NP Gauge is increased by when attacking enemies. 0.64%	NP Charge DEF: NP Charge DEF: Tooltip for 25px|bottom|link= NP Charge DEF:ⓘAffects how much the NP Gauge is increased by when being attacked. 3%
Death Rate: Death Rate: Tooltip for 25px|bottom|link= Death Rate:ⓘChance of this servant being killed by the 'Instant-Kill' effect, lower numbers are better. Note that this rate is ONLY affect to player side. Enemy Servant has basically quite low rate. (0% ~ 1%) 10%	Alignments: Lawful・Good
Gender: Female
Basic Traits: Arthur, Artoria Face, Dragon, Enuma Elish Nullification, Existence Outside the Domain, Hominidae Servant, Humanoid, King, Loved One, Riding, Servant, Spaceflight-able Servant, Summer Mode Servant
Hits:  44  |  33  |  44  |  44

Active Skills	Passive Skills	Append Skills	Noble Phantasm	Ascension
Skill Upgrade	Stats	Bond Level	Biography	Trivia

Active Skills

• First Skill
• Second Skill
• Third Skill

Available from the start

	Piloting EX
Grants self Invincibility for 1 turn. Increases own attack for 1 turn.
Level	1	2	3	4	5	6	7	8	9	10
Attack +	30%	32%	34%	36%	38%	40%	42%	44%	46%	50%
Cooldown	7					6				5

Unlocks after 1st Ascension

	Detective's Instinct E
Gains critical stars. Reduces own critical star absorption for 1 turn.
Level	1	2	3	4	5	6	7	8	9	10
Stars +	10	11	12	13	14	15	16	17	18	20
Absorption -	50%	55%	60%	65%	70%	75%	80%	85%	90%	100%
Cooldown	6					5				4

Unlocks after 3rd Ascension

	Justice from the Ends of the World A
Ignores Invincibility for 1 turn. Charges own NP gauge. Increases own damage against Threat to Humanity enemies for 1 turn.
Level	1	2	3	4	5	6	7	8	9	10
NP +	20%	21%	22%	23%	24%	25%	26%	27%	28%	30%
vs. Threat to Humanity Damage +	30%	32%	34%	36%	38%	40%	42%	44%	46%	50%
Cooldown	7					6				5

Passive Skills

1		Existence Outside the Domain D
	Gains 2 critical stars every turn. Increases own debuff resistance by 4%.
2		Cosmo Reactor B
	Increases own critical star generation rate by 8%.
3		Independent Action A
	Increases own critical damage by 10%.
4		Riding A
	Increases own Quick performance by 10%.

Append Skills

• First Skill
• Second Skill
• Third Skill
• Fourth Skill
• Fifth Skill

Unlocks by consuming Servant Coins

	Extra Attack Finesse Improvement
Increases own Extra Attack performance.
Level	1	2	3	4	5	6	7	8	9	10
Extra Attack +	30%	32%	34%	36%	38%	40%	42%	44%	46%	50%

Unlocks by consuming Servant Coins

	Mana Loading
Starts battle with NP gauge charged.
Level	1	2	3	4	5	6	7	8	9	10
NP +	10%	11%	12%	13%	14%	15%	16%	17%	18%	20%

Unlocks by consuming Servant Coins

	Anti-Moon Cancer Attack Damage Aptitude
Increases own attack against Moon Cancer enemies.
Level	1	2	3	4	5	6	7	8	9	10
vs. Moon Cancer Attack +	20%	21%	22%	23%	24%	25%	26%	27%	28%	30%

Unlocks by consuming Servant Coins

	Special Attack Finesse Improvement
Increases own critical damage.
Level	1	2	3	4	5	6	7	8	9	10
Crit Damage +	20%	21%	22%	23%	24%	25%	26%	27%	28%	30%

Unlocks by consuming Servant Coins

	Skill Reloading
Reduces the cooldown of the skill by 1 after activation for N times. (Once per skill) (N: Based on Skill Level.)
Level	1	2	3	4	5	6	7	8	9	10
Reduction Available Count +	1	1	1	1	1	2	2	2	2	3

Noble Phantasm

• Rank 'EX'
• Rank EX
• Videos

Upgrades after Strengthen 1

Etherspace,Twin-Myniad Disaster Yet/ LawfulDouble X Dynamic
Sapphire Galaxy Id Est Cosmos

Base Damage: x1.0	Rank	Noble Phantasm Type
	EX	Anti-Unit
	Hits	Per Hit Percentage
	4	10%, 20%, 30%, 40%
Effect	Deals damage to one enemy. Deals 200% extra damage to Saber Class Servant enemies. Deals 200% extra damage to Saber Class Servant enemies.  Tooltip for 25px|link= Deals 200% extra damage to 25px|link=Saber Saber Class Servant enemies. 15px|link=ⓘThis value deals 100% = 1.0x and multiplied by base NP Damage. For more information about damage formula, see Battle pages.
NP Level	1	2	3	4	5
Damage +	1200%	1500%	1650%	1725%	1800%
Overcharge Effect	Increases own attack for 1 turn. (Activates first)(Activates first)This effect activates first before dealing damage.
Charge	100%	200%	300%	400%	500%
Attack +	20%	30%	40%	50%	60%

Etherspace,Twin-Myniad Disaster Yet/ LawfulDouble X Dynamic
Sapphire Galaxy Id Est Cosmos

Base Damage: x1.0	Rank	Noble Phantasm Type
	EX	Anti-Unit
	Hits	Per Hit Percentage
	4	10%, 20%, 30%, 40%
Effect	Deals damage to one enemy. Deals 150% extra damage to Saber Class Servant enemies. Deals 150% extra damage to Saber Class Servant enemies.  Tooltip for 25px|link= Deals 150% extra damage to 25px|link=Saber Saber Class Servant enemies. 15px|middle|link=ⓘThis value deals 100% = 1.0x and multiplied by base NP Damage. For more information about damage formula, see Battle pages.
NP Level	1	2	3	4	5
Damage +	900%	1200%	1350%	1425%	1500%
Overcharge Effect	Increases own attack for 1 turn. (Activates first)(Activates first)This effect activates first before dealing damage.
Charge	100%	200%	300%	400%	500%
Attack +	20%	30%	40%	50%	60%

• Normal
• Arcade

Learn More About Fate/Grand Order Arcade

Ascension

n°	Item 1	Item 2	Item 3	Item 4	QP
1st	88	88			50,00050,000
2nd	88	88			150,000150,000
3rd	88	88			500,000500,000
4th	88	88			1,500,0001,500,000

Skill Reinforcement

• Active
• Append

n°	Item 1	Item 2	Item 3	Item 4	QP
1st	88				100,000100,000
2nd	88				200,000200,000
3rd	1010				600,000600,000
4th	1010				800,000800,000
5th	1010				2,000,0002,000,000
6th	1212				2,500,0002,500,000
7th	1212				5,000,0005,000,000
8th	1212				6,000,0006,000,000
9th	11				10,000,00010,000,000

n°	Item 1	Item 2	Item 3	Item 4	QP
1st	88				100,000100,000
2nd	88				200,000200,000
3rd	1010				600,000600,000
4th	1010				800,000800,000
5th	1010				2,000,0002,000,000
6th	1212				2,500,0002,500,000
7th	1212				5,000,0005,000,000
8th	1212				6,000,0006,000,000
9th	11				10,000,00010,000,000

Stats

Strength:Strength:Bodily might in terms of power. B	Endurance:Endurance:How much damage one can withstand. B
Agility:Agility:Quickness and speed of reaction. B	Mana:Mana:How much magical energy can be handled. E
Luck:Luck:The quality of one's luck. D	NP:NP:The strength of the Noble Phantasm one owns. While the ranking will often match their strongest Noble Phantasm, it will sometimes only reflect a secondary Noble Phantasm, or display a ranking higher or lower than their available wares. EX

Bond Level

Bond Level	1	2	3	4	5	6	7	8	9	10
Bond Required	3,000	6,125	6,125	6,125	6,125	262,500	290,000	300,500	309,500	315,500
Total Bond	3,000	9,125	15,250	21,375	27,500	290,000	580,000	880,500	1,190,000	1,505,500
Rewards	55	55	55	55	55	55 22	2020 22	2020 22	2020 22	4040 Bond CE
Bond 10 Craft Essence				Memories of the Earth When equipped on Mysterious Heroine XX: Increases party's damage against Saber enemies by 20% while self is on the field.
Chaldean Visionary Flames [?][?]Requirement to unlock Max Bond Capacity	11		12		13		14		15
	1,090,000		1,230,000		1,360,000		1,500,000		1,640,000
	2,595,500		3,825,500		5,185,500		6,685,500		8,325,500
Rewards	5050 3030		6060 3030		6060 3030		6060 3030		6060 3030

Biography

“ "Foreigner detected. Must. Annihilate." ”

Unlock	Description	Translation🛈🛈|nbx= for north american localization release and |bx = for fan english translation
Default	サーヴァント・フェスティバルを破壊する為に やってきた一筋の流星。 宇宙の法の代弁者であり、地球人類、 そして同属であるフォーリナーを抹殺する 冷酷無比のマシン・サーヴァント。 その予想外の素顔が明らかになった時、 誰もが驚きのあまり目を背けると言うが―――？	NA TL NA Localization: A single shooting star that arrived to destroy the Servant Festival. She is the voice of Space Law, and a merciless Machine Servant tasked with obliterating all of Earth's humans and Foreigners. And when her unexpected identity is finally revealed, rumor is that the shock may overwhelm everyone! Fan Translation: 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―――?
Bond 1	身長／体重：154cm・48kg 出典：コスモガーディアン三部作より 地域：サーヴァント・ユニヴァース 属性：秩序・善　　副属性：星　　性別：女性 ※身長体重は乗着時に変動する。 「体重は日々の激務のストレスでちょっと増えているだけで、すぐに元の42kgに戻りますので！」	NA TL NA Localization: Height/Weight: 154cm, 48kg Origin: The Cosmo Guardian Trilogy Region: The Servant Universe Alignment: Lawful-Good Gender: Female *Height and weight changes every time she suits up or purges her armor. "My weight is just high because of my work stress. I'll get back to my original 42kg real quick!" Fan Translation: Height/Weight: 154cm・48kg Source: Cosmo Guardian Trilogy Region: Servant Universe Alignment: Lawful・Good Attribute: Star Gender: Female *her measurements change when she Enplanes. "The weight has just increased a little due to the stress of daily hard work, but I will return to my previous 42kg in no time!"
Bond 2	『蒼輝銀河即ちコスモス』 ランク：ＥＸ　種別：対人宝具 レンジ：９～９９ エーテル宇宙然るに秩序。 『ツインミニアド・ディザスター』『ダブルエックスダイナミック』とその場のノリで叫ぶが、ルビ（真名）は『エーテル宇宙然るに秩序』である。 ロンゴミニアドが守る宇宙のルールを鏡合わせで示す真名。ロンゴミニアドＬＲのセーフモードを解除し、出力を上げてからのダイナミックセイバー斬り。相手は惑星ごと爆発する。 黙秘の権利、弁護士を呼ぶ権利といったものに捉われない、最終裁決手段。フォーリナー特攻だけでなくセイバー特攻もある便利な宝具。	NA TL NA Localization: 『Etherspace, Yet Lawful』 Rank: EX NP Type: Anti-Personnel Range: 9 - 99 The Servant Universe Is the Cosmos. Depending on her mood, she will shout either "Twinmyniad Disaster" or "Double X Dynamic," but this Noble Phantasm's True Name is "Etherspace, Yet Lawful." The True Name represents and mirrors the Rhongomyniad that protects the laws of space. The Rhongomyniad LR's safety limiters are removed, and it devastates Sabers by increasing its output. It'll blow its target up, planet and all. She rejects the notion of a right to remain silent or a right to an attorney, because she is the voice of judgment. This is a useful Noble Phantasm that is not only a Special Attack against Foreigners, but also against Sabers. Fan Translation: Etherspace, Yet Lawful Rank: EX Type: Anti-Unit Range: 9～99 Regulation of the Aether Cosmos. Although she shouts many things in accordance with her mood at the time - such as "Twinmyniad Disaster" or "Double X Dynamic" - its True Name is "Etherspace, Yet Lawful". By means of opposing mirrors, this True Name denotes the rules of the universe that Rhongomynyad protects. A dynamic Saber Slash performed after releasing the safe-mode of Rhongomynyad-LR and increasing its output. It explodes the opponent along with the planet itself. The final ruling measure, which does not adhere to things such as the right to remain silent or the right to call a lawyer. A convenient Noble Phantasm that is endowed with special effectiveness not only against Foreigners, but also against the Sabers.
Bond 3	『無銘星雲剣』 ランク：ＥＸ　種別：対軍宝具 レンジ：９～９９ むめいせいうんけん。ひみつみにあど。 宇宙の天秤と言われるロンゴミニアドＬＲを使った銀河星雲切り。 槍をブンブンと振り回すとその光芒はネビュラのように渦巻き、周囲のすべてをなぎ払う。敵味方の区別はない。 FGOでは基本的に使用されない。 ○最果ての正義：Ａ 宇宙の最先端にして最果てである『境界』からの力。『無』を食い破る力でもあり、宇宙を拡げる真理そのものとも。 別宇宙の上位存在たちですら追い返す『宇宙のバランスを取る』パゥワーだが、XXはよく理解していない。	NA TL NA Localization: 『Nameless Nebula Sword, Secretmyniad』 Rank: EX NP Type: Anti-Army Range: 9 - 99 A galaxy nebula slicer that uses Rhongomyniad LR, a weapon said to be space's balancing scales. Swinging the spear around radiates light like a swirling nebula, which mows down all around it, friend or foe. This doesn't really get used in FGO. Justice of World's End: A 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. Fan Translation: Nameless Nebula Sword Rank: EX Type: Anti-Army Range: 9～99 Mumei-Seiunken. Himitsu-Mynyad. A Galaxy Nebula Slash that employs Rhongomynyad-LR, which is said to be the balance of the universe. By swinging the spear round-and-round, its beam of light will swirl like a nebula and mow down everything in the surroundings. It makes no distinction between friends and foes. Fundamentally not employed in FGO. Justice from the Ends of the World: A A power from the "boundary" that is both the far beyond and the forefront of the universe. Also, a power to rip apart "nothingness" and the very truth that expands the universe. A powah that "keeps the balance of the universe" and drives away even the superior existences from a different universe, but XX herself does not quite understand it.
Bond 4	○乗着：ＥＸ 聖槍甲冑アーヴァロンの加護。甲冑はXXの周囲に、霊子として常に存在する。 これをマイナス一秒（不意打ちされたとしても、その一秒前に時間を遡って装備する）で実体化・武装する早技を本人は『乗着（じょうちゃく）』と名付けている。ほぼアウト。 コスモ刑事になったものの、朝は寝坊がちで遅刻の常習犯だったXXが身につけたおそるべきスキルである。ただの着替えスキルとも。 実は実体化する必要はあまりなく、霊子状態でも甲冑としての機能は発揮する。 武装すると攻撃面での能力が格段にアップする。 ○刑事の直感：Ｅ 犯人を突き止めるための天啓。 事件解決においては使わない方がいいランク。 理屈を無視した異次元のひらめきで事件解決のためのヒントを周囲にバラ撒くが、XX本人は決してそのヒントに気付かない。 場合によってはデメリットがメリットになる、実はとても優秀なスキル。	NA TL NA Localization: Suit Up: EX The protection of the sacred spear armor Aahvalon. 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. Police Instincts: E 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. In some cases, this demerit becomes advantageous, actually making this a brilliant skill. Fan Translation: Riding: EX A divine protection from the Holy Spear Armor Avalon. The armor constantly exists around XX as spirit particles. She call the quick work of materializing・arming this at a speed of minus one second (even when suffering a surprise attack, she goes back in time one second before it happens and equips this) "Enplane". Right out. A fearsome skill acquired by XX, who is recurrently late for work due oversleep despite becoming a Cosmic Sheriff. Surely, this is just a skill for changing clothes. As a matter of fact, its functions as an armor are displayed even in a spirit particles-state, so there is really no need to materialize it. Once armed, her offensive abilities increase dramatically. Detective's Instinct: E A divine revelation for the sake of pinning down a criminal. At this rank, it is better not to use it to solve crimes. By means of a higher dimensional insight that ignores reason, hints for the sake of solving a crime are spread across the surroundings - but XX herself does not notice those hints no matter what. This is actually quite an excellent skill that can turn demerits into merits.
Bond 5	謎のヒロインXは、一言でいうとコメディドラマの主人公である。 アルトリアさんから真面目成分を引いたXは、 何事も最短・最速・最シンプルで行動する。 元気いっぱい、礼儀正しい言動とは裏腹に、本人はとても負けず嫌い（自覚がないため、空気読めない感ハンパない）であらゆる事にチャレンジし、そして勝つまで諦めないという困った性格をしている。 だが根っこにある善人性から『結局はまわりのために働いてしまう』ため、結局はうまく回っていた。 が。 サーヴァント・ユニヴァースも煮詰まり、乱発されたエクストラクラスによってヒーローとヴィランの比率が崩壊。宇宙の天秤がヴィランに傾いた時、Xは信条を新たにした。 具体的にいうと番組は新シーズンに突入した。 無職で困っていたXは秘密結社・銀河警察に就職し、その中枢に眠っていた宇宙最古のアーティファクト・ロンゴミニアドを偶然キャッチ。その才能を認められ、宇宙防人（ギャラクシアン）として活躍する事になったのだった。 　　　　　―ＣＧ第１部　ストーリーより抜粋―	NA TL NA Localization: To sum up Mysterious Heroine X in a sentence would probably be simplest by saying that she is the protagonist of a TV comedy. By inheriting Altria's serious demeanor, X focuses on doing everything as quickly and simply as possible. Contrary to her polite and energetic mannerisms, she is extremely competitive (since she's not really aware of this, she is unbelievably dense). She challenged herself to achieve various things, and was absolutely relentless, not giving up until she succeeded. This was a bit problematic, but since she possesses such a virtuous nature, she ended up working to benefit others, so it all worked out okay. However... With the Servant Universe full and boiling over with an excess of Extra Classes, the balance between heroes and villains collapsed. The moment the scales of space tilted toward the villains, XX vowed to change her principles... And then the show headed into a new season. As an unemployed X didn't know what to do, she was hired by a secret society, the Galactic Police. In their HQ's center, she stumbles onto the oldest artifact in space, the Rhongomyniad. Her talents are acknowledged, and she becomes active as a Galaxian. -Story Excerpt from CG Episode I- Fan Translation: To put it simply, Mysterious Heroine X is the protagonist of a comedy-drama. 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. 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 unemployment, X got herself a job on the secret society・Galaxy Police and coincidentally caught Rhongomynyad, the oldest artefact in the universe that was lying dormant at its centre. 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 -
Requires Bond Level 5
Extra	コスモ刑事になったXは「これはいい機会ですね」と名前・戸籍をXXと改名。 別人となった事でこれまでの借金をすべて踏み倒し、外宇宙からの侵入者、フォーリナーを取り締まる特捜０課を設立。 邪神ハンター・XXの誕生である。 セイバーハンターとしての本能は薄れ、フォーリナーハンターとしての本能が特出している。 とはいえセイバー排除運動を止めたワケではないので、セイバー特攻は変わらず。 ○動機・マスターへの態度 地球でのパートナー。頼れるお財布。 恋愛スキルほぼゼロのXなのでオトモダチ感覚だが、そのうち大切な人だと気がつき、 「この胸のどきどきはいったい……まさかこの星にはセイバーの邪神が！？」 などと勘違いをしてチャンスを逃したりする。 基本的にはXと同じだが、刑事としての自覚が意識を高くしており、Xよりお姉さんぶる。 Xより数年後のシリーズなので、生活に疲れたＯＬ味がある。	NA TL NA Localization: When X became a member of the Galactic Police, she saw this as a good opportunity and changed her name and registration to XX. As she gained a new identity, she was able to abandon all her past debts, and she established Special Investigation Division O that cracked down on Foreigners, the invaders from outside space. And so was born XX, huntress of the wicked. Her whole Saber-hunter thing has kind of faded, and now she's a Foreigner-hunter. Still, her desire to eradicate all Sabers hasn't gone away, so she still has her Saber special attacks. Motivation, Behavior Towards Master: Partner on Earth. A reliable wallet. Since X has zero skills and awareness when it comes to romance, Master is more of a friend to her. Eventually, though, she realizes they are someone special. "What's this sensation I'm feeling in my chest...don't tell me there's a wicked Saber on this planet!?" Her erroneous thinking leads her to miss her opportunity. She's pretty much the same X, but she's aware that she's an officer, so tries to act more mature. Since she's a few versions later (read: older) than X, she looks like an office worker worn out by the daily grind. Fan Translation: 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. ○Motivations・Attitude towards the Master Her partner on Earth. A reliable wallet. Since X has pretty much zero romance skill, she just treats him as a friend. Still, she will eventually notice that he is her precious someone and then let her chances slip up due some misunderstanding. "What is this feeling in my chest... could it be that a Saber evil deity came to this planet!?" Fundamentally, she is the same as X. But due the self-awareness as a sheriff increasing her consciousness, she behaves more like an older sister than X. Since she belongs to a series from a few years later than X, she is like an office lady who became tired of daily life.
April Fool	アルトリアサーヴァント 謎のヒロインXが成長し、生活のために銀河警察に就職したOLサーヴァント。フォーリナー退治が仕事だがアルトリアを抹殺する使命は忘れていない。	Artoria-Type Servant Mysterious Heroine X, but all grown up and working as an office lady. And a space cop. Her mission is to eradicate Foreigners, but she's not letting the Artoria thing go either.

Availability

Mysterious Heroine XX was available for summoning during the:

Servant Summer Festival! 2018	Servant Summer Festival! 2018 Rerun	Fate/Grand Order ～5th Anniversary～ Lucky Bag Summoning Campaign
Imaginary Scramble Pre-Release Summoning Campaign	Fate/Grand Order ～7th Anniversary～ Lucky Bag Summoning Campaign	New Year 2023 Summoning Campaign
28M Downloads Summoning Campaign

Trivia

• Mysterious Heroine XX is the first 4★ Foreigner.
• Mysterious Heroine XX's Noble Phantasm is also known as Twin-Myniad Disaster and Double X Dynamic.
• She shares the exact HP values at both minimum and maximum with Martha (Ruler).
• She shares the exact HP value at maximum with Kijyo Kōyō.
• She is the first Foreigner not associated with a Lovecraftian horror.
• The music playing during her Noble Phantasm is based on the Knights of the Round Table's battle theme in Camelot.
• Her Noble Phantasm is possibly a reference to Ado Edem from Notes.