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Bryn2.png This Servant is a Limited Servant Limited.png. They are only available during special summoning campaigns. When no such campaigns are active, this Servant cannot be summoned.

This article is for Class-Assassin-Gold.png Mysterious Heroine X. For 5★ Class-Berserker-Gold.png, see Mysterious Heroine X (Alter). For 4★ Class-Foreigner-Gold.png see Mysterious Heroine XX. For 5★ Class-Saber-Gold.png, see Artoria Pendragon.

Servant Dialogue Interlude Strengthen
Class-Assassin-Gold.png
★ ★ ★ ★ ★

Mysterious Heroine X

Japanese Name: 謎のヒロインX
AKA: MHX, A-X, Mysterious Racer X (Summer Event)
ID: 86 Cost: 16
ATK: 1,817/11,761 HP: 1,862/12,696
Lv.100 Grail ATK: 12,874 Lv.100 Grail HP: 13,909
Lv.120 Grail ATK: 15,112 Lv.120 Grail HP: 16,347
Voice Actor: Kawasumi Ayako Illustrator: BUNBUN
Attribute: Star Growth Curve: Linear
Critabsup.png Star Absorption: 98 Stargainup.png Star Generation: 25.6%
Npchargeup.png NP Charge ATK: 0.81% NPGainUpDmg.png NP Charge DEF: 4%
Instapowerup.png Death Rate: 38.5% Alignments: Chaotic・Good
Gender: Female
Traits: Arthur, Costume-Owning, Dragon, Female, Hominidae Servant, Humanoid, King, Riding, Saberface, Servant
QQAAB.png
Hits:  Quick Hits4  |  Arts Hits2  |  Buster Hits1  |  Extra Hits4
Active Skills Passive Skills Append Skills Noble Phantasm Ascension
Skill Upgrade Bond Level Biography Trivia Images

Active Skills

Available from the start
Stun.png
DelayedBuff.png 500% Chance to grant self Delayed buff for 1 turn.
(Chance to Stun all enemies for 1 turn after 1 turn.)
Level 1 2 3 4 5 6 7 8 9 10
Stunstatus.png Stun Chance + 60% 62% 64% 66% 68% 70% 72% 74% 76% 80%
Cooldown 10 9 8

Upgrades after Strengthen 2, Replace Fire Support EX
Stun.png
Reduce all enemies defense for 3 turns. UpgradeIconText.png
DelayedBuff.png 500% Chance to grant self Delayed buff for 1 turn.
(Chance to Stun all enemies for 1 turn after 1 turn.)
Level 1 2 3 4 5 6 7 8 9 10
Defensedown.png Defense - 10% 11% 12% 13% 14% 15% 16% 17% 18% 20%
Stunstatus.png Stun Chance + 60% 62% 64% 66% 68% 70% 72% 74% 76% 80%
Cooldown UpgradeIconText.png 9 8 7

Unlocks after 1st Ascension
CritStar.png
Gains critical stars.
Level 1 2 3 4 5 6 7 8 9 10
GainStars.png Stars + 4 5 6 7 8 9 10 11 12 14
Cooldown 7 6 5

Upgrades after Strengthen 1, Replace Instinct C+
Invishield.png
Invincible.png Grants self Invincibility for 1 turn. UpgradeIconText.png
Gains critical stars. UpgradeIconText.png
Level 1 2 3 4 5 6 7 8 9 10
Stars + 10 11 12 13 14 15 16 17 18 20
Cooldown 7 6 5

Unlocks after 3rd Ascension
CritGen.png
Increases own critical star generation rate against Class-Saber-Gold.png Saber enemies for 3 turns.
Increases own damage against Class-Saber-Gold.png Saber enemies for 3 turns.
Level 1 2 3 4 5 6 7 8 9 10
Stargainup.png Saber Star Rate + 50% 55% 60% 65% 70% 75% 80% 85% 90% 100%
Powerup.png Saber Damage + 30% 32% 34% 36% 38% 40% 42% 44% 46% 50%
Cooldown 8 7 6

Upgrades after Saber Wars II or Interlude 4, Replace Galaxy Meteor Sword C
CritGen.png
Increases own critical star generation rate against Class-Saber-Gold.png Saber enemies for 3 turns.
Increases own damage against Class-Saber-Gold.png Saber enemies for 3 turns.
Increases own attack for 3 turns. UpgradeIconText.png
Level 1 2 3 4 5 6 7 8 9 10
Stargainup.png Saber Star Rate + 50% 55% 60% 65% 70% 75% 80% 85% 90% 100%
Powerup.png Saber Damage + 30% 32% 34% 36% 38% 40% 42% 44% 46% 50%
Attackup.png Attack + 10% 11% 12% 13% 14% 15% 16% 17% 18% 20%
Cooldown 8 7 6

Passive Skills

1
Riding.png
Riding EX
Quickupstatus.png Increases own Quick performance by 12%.
2


CritGen.png
Cosmo Reactor A
Stargainup.png Increases own critical star generation rate by 10%.

Append Skills

Unlocks by consuming Servant Coins
Damageup.png
Extra Attack Finesse Improvement
Increases own Extra Attack performance.
Level 1 2 3 4 5 6 7 8 9 10
Powerup.pngNpchargeup.pngStargainup.png Extra Attack + 30% 32% 34% 36% 38% 40% 42% 44% 46% 50%

Unlocks by consuming Servant Coins
Startnp.png
Mana Loading
Starts battle with NP gauge.
Level 1 2 3 4 5 6 7 8 9 10
NpCharge.png NP + 10% 11% 12% 13% 14% 15% 16% 17% 18% 20%

Unlocks by consuming Servant Coins
Atk up.png
Anti-Saber Attack Damage Aptitude
Increases own attack against Class-Saber-Gold.png Saber enemies.
Level 1 2 3 4 5 6 7 8 9 10
Attackup.png vs. Saber Attack + 20% 21% 22% 23% 24% 25% 26% 27% 28% 30%

Noble Phantasm

Secret Calibur
Sword of Unsigned Victory

Quick.png
Base Damage: x0.8
Rank Noble Phantasm Type
A+ Anti-Unit
Hits Per Hit Percentage
12 5%, 7%, 5%, 7%, 5%, 7%, 5%, 7%, 5%, 7%, 5%, 35%
Effect Deals damage to one enemy. PreUpgradeIconTitle.png
NP Level 1 2 3 4 5
Powerup.png Damage + 1200% 1600% 1800% 1900% 2000%
Overcharge Effect Deals extra damage against Saberface enemies.
Charge 100% 200% 300% 400% 500%
Powerup.png Extra Damage x 150% 162.5% 175% 187.5% 200%

Upgrades after Interlude 3

Secret Calibur
Sword of Unsigned Victory

Quick.png
Base Damage: x0.8
Rank Noble Phantasm Type
EX Anti-Unit
Hits Per Hit Percentage
12 5%, 7%, 5%, 7%, 5%, 7%, 5%, 7%, 5%, 7%, 5%, 35%
Effect Deals damage to one enemy. UpgradeIconText.png
NP Level 1 2 3 4 5
Powerup.png Damage + 1600% 2000% 2200% 2300% 2400%
Overcharge Effect Deals extra damage against Saberface enemies.
Charge 100% 200% 300% 400% 500%
Powerup.png Extra Damage x 150% 162.5% 175% 187.5% 200%

Ascension

Item 1 Item 2 Item 3 Item 4 QP
1st Assassin piece.png5 QPicon.png100,000
2nd Assassin piece.png12 Dragon Fang18 QPicon.png300,000
3rd Assassin monument.png5 Dragon's Reverse Scale2 Phoenix Plume8 QPicon.png1,000,000
4th Assassin monument.png12 Dragon's Reverse Scale4 Hero's Proof36 QPicon.png3,000,000
Costume 1
Mysterious Heroine Z
謎のヒロインXにとってすら謎な存在
セイバー飽和現象が生んだパラレルX
X from a parallel world born from the Saber saturation phenomenon, considered bizarre even by Mysterious Heroine X's standards.
Hero's Proof10 Aurora Steel.png5 DawnlightReactorCoreIcon.png5 Dragon's Reverse Scale5 QPicon.png3,000,000


Skill Reinforcement

Item 1 Item 2 Item 3 Item 4 QP
1st Shining Gem of Killing5 QPicon.png200,000
2nd Shining Gem of Killing12 QPicon.png400,000
3rd Magic Gem of Killing5 QPicon.png1,200,000
4th Magic Gem of Killing12 Phoenix Plume4 QPicon.png1,600,000
5th Secretassassin.png5 Phoenix Plume8 QPicon.png4,000,000
6th Secretassassin.png12 Dragon Fang12 QPicon.png5,000,000
7th Void's Refuse12 Dragon Fang24 QPicon.png10,000,000
8th Void's Refuse36 Octuplet Twin Crystals24 QPicon.png12,000,000
9th Crystallized lore.png1 QPicon.png20,000,000

Item 1 Item 2 Item 3 Item 4 QP
1st Shining Gem of Killing5 QPicon.png200,000
2nd Shining Gem of Killing12 QPicon.png400,000
3rd Magic Gem of Killing5 QPicon.png1,200,000
4th Magic Gem of Killing12 Medal of Great Knight10 QPicon.png1,600,000
5th Secretassassin.png5 Medal of Great Knight20 QPicon.png4,000,000
6th Secretassassin.png12 Dragon's Reverse Scale2 QPicon.png5,000,000
7th Dragon's Reverse Scale4 DawnlightReactorCoreIcon.png4 QPicon.png10,000,000
8th DawnlightReactorCoreIcon.png11 Comet Shard.png10 QPicon.png12,000,000
9th Crystallized lore.png1 QPicon.png20,000,000

Stats

Strength: B
Stats4.png
Endurance: C
Stats3.png
Agility: A+
Stats5.png
Mana: B
Stats4.png
Luck: D
Stats2.png
NP: A++
Stats5.png

Bond Level

Bond Level 1 BoundLevel1.png 2 BoundLevel2.png 3 BoundLevel3.png 4 BoundLevel4.png 5 BoundLevel5.png 6 BoundLevel6.png 7 BoundLevel7.png 8 BoundLevel8.png 9 BoundLevel9.png 10 BoundLevel10.png
Bond Required 3,500 8,500 7,000 6,000 2,500 292,500 360,000 340,000 320,000 315,000
Total Bond 3,500 12,000 19,000 25,000 27,500 320,000 680,000 1,020,000 1,340,000 1,655,000
Bond 10 Reward Annihilation List icon.png Annihilation List
When equipped on Mysterious Heroine X,
Increase Party's damage to Class-Saber-Gold.png Saber enemies by 20% while she is on the field.
BoundLevel15.png
Chaldean Visionary Flames [?]
11 BoundLevel1.png 12 BoundLevel2.png 13 BoundLevel3.png 14 BoundLevel4.png 15 BoundLevel5.png
1,090,000 1,230,000 1,360,000 1,500,000 1,640,000
2,745,000 3,975,000 5,335,000 6,835,000 8,475,000


Biography

Unlock Description Translation🛈
Default サーヴァントユニヴァースと呼ばれる謎の時空から来訪したストレンジャー。

自らをセイバークラスの決定版と名乗り、騎士として正々堂々と闇討ちを行う対セイバー用決戦兵器。

コードネーム・A-X。

NA Localization: The Servant Universe.
That's where the stranger claims where she's from.
She calls herself "Saber: the Definitive Edition."
Through a combination of fair duels and assassinations, she's the ultimate Anti-Saber weapon.

Codename: A-X.

Fan Translation: A Stranger that came visiting from a mysterious dimension called Servant Universe.
Claiming to be the definitive edition of the Saber Class, an Anti-Saber Decisive Weapon that fair and square performs surprise attacks as a knight.

Code Name: A-X.

Bond 1 身長/体重:154cm・42kg

出典:2013年エイプリルフール
地域:サーヴァント界
属性:混沌・善  性別:女性
なぞのまけん『ひみつかりばー』でてきをみなごろしにするぞ。

NA Localization: Height/Weight: 154cm, 42kg
Origin: April Fools Day, 2013
Region: The Servant Universe
Alignment: Chaotic-Good
Gender: Female
I will kill everyone using my sword, the "Secret Calibur."

Fan Translation: Height/Weight: 154cm・42kg Source: 2013's April Fools
Region: Servant Universe
Alignment: Chaotic・Good
Gender: Female
Going to massacre the enemy with the mysterious magic sword "Secret-Calibur".

Bond 2 「アルトリア種は宇宙のガンのようなもの。誰かが刈り取らねばならないのです。誰かが」

苦渋に満ちた表情でそう残し、ヒロインXは故郷を後にした。
愛機ドゥ・スタリオンⅡ号は今日も星の海を駆ける。

NA Localization: "Altria-Types are like a cancer on the world, someone must eradicate them, someone must..."

With determination in her heart, Heroine X left her home and rides the Du Stallion II through the starry ocean.

Fan Translation: "The Artoria Species are like a cancer of the universe. Someone has to reap them out."

Leaving behind an expression full of bitterness, Heroine X departed from her hometown.
In her favorite machine Dun Stallion II, she dashes across the sea of stars today as well.

Bond 3 その姿はおおよそサーヴァントらしからぬラフ&スポーティな服装。

青いマフラーは勇気の印、帽子はその正体とアホ毛を隠すためのものである。
突き出てる突き出てるめっちゃ突き出てる。

NA Localization: Her look is too rough and sporty for a typical Servant.
Her scarf is a symbol of courage, and her hat conceals her face and her ahoge.
But it's still poking out, oh it's definitely poking out.

Fan Translation: On the whole, her appearance is composed of rough & sporty garments unseemly for Servants.
The blue muffler is a symbol of courage, while the cap is there to conceal her true identity and ahoge.
It's sticking out. It's sticking out, it's really sticking out.

Bond 4 対セイバー決戦兵器として、並み居るセイバーをひたすら打倒する我はこの一聖剣に賭ける修羅モードであるが、唯一セイバーリリィに対しては心を開いた。

NA Localization: As the Anti-Saber weapon, my only purpose is to defeat Sabers with my sword and my will.
But, I opened up my heart to Saber Lily.

Fan Translation: As an Anti-Saber Decisive Weapon, she displays a carnage mode that wagers that single holy sword for nothing but defeating all the present Sabers, but she opened her heart towards Saber Lily alone.

Bond 5 こちらにやってくるまでは古代王朝の危機を救ったり人類統合組合の内ゲバを解決したり他ユニヴァースからの侵略者たちを蹴散らしたりしていたが、そんなものは彼女にとって朝食前のデザートのようなもの。どうでもいい事なので覚えていないらしい。

真の悲願達成まで、彼女は今日もひみつかりばーを振るい続ける。あと黄金大帝コスモギルガメスは何があっても斬り捨てる。

NA Localization: Until she came here, she was saving an ancient dynasty, solving the internal quarrels of the Human Alliance Union, and dispersing intruders from other universes.
However, she doesn't remember any of this, because to her, such deeds are ordinary.

Until her long-time goal is achieved, she will continue to wield her Secret Calibur.
She will also cut down the Golden Emperor, Gilgamesh, as many times as she needs to.

Fan Translation: Before coming here, she saved an ancient royal dynasty from a crisis, settled the internal strife of the Mankind Integration Union and routed the invaders from another Universe, but for her that is like a dessert prior to breakfast. Since they are trivial, it seems like she does not remember about them.

Until the achievement of her true, dearest wish, she shall continue to wield the Himitsucalibur. Also, no matter what, she will simply cut down the Golden Great Emperor Cosmo Gilgamesh.

Clear Interlude 1
Extra 誰にも打ち明けられないが、その正体はアルトリア・ペンドラゴン

完璧な変装に誰もが騙されたと思うが、ネタバレになるのでどうか黙していてほしい。
本人の名誉のためにも……!

NA Localization: Don't tell anybody, but her true identity is Altria Pendragon.

She thought her perfect disguise had tricked everyone.
Please don't say anything about who she really is, for the sake of spoilers and her honor.

Fan Translation: She has not revealed to anyone, but her true identity is that of Artoria Pendragon.

She seems to think that everybody was tricked by her perfect disguise, but since it will turn into spoilers please keep it quiet.
For the sake of her honor as well...!

April Fool アルトリアサーヴァント

数あるサーヴァントの中でも最も元ネタが分からない。アルトリア種を根絶やしにするためにアルトリア遺伝子から作られた哀しき殺数兵器。  

Artoria-Type Servant

Of all the Servants to exist, her origin is the most mysterious. She's a mass-murdering weapon created from Artoria genes to eradicate all the Artoria-type Servants.


Availability

Mysterious Heroine X was available for summoning during the:

Saber Wars Event Fes.2017~2nd Anniversary~Lucky Bag 2018 New Year Campaign Lucky Bag
Saber Wars Event Re-run Fes.2018~3rd Anniversary~Lucky Bag New Year Lucky-Bag Summoning Campaign 2019
Fate/Grand Order Fes. 2019 ~4th Anniversary~
Lucky Bag Summoning Campaign
Saber Wars II Pre-Release Summoning Campaign New Year Lucky-Bag Summoning Campaign 2020
Fate/Grand Order ~5th Anniversary~ Lucky Bag Summoning Campaign Lucky Bag 2021 Summoning Campaign New Year Special Saber Wars II Rerun Summoning Campaign 2
Fate/Grand Order ~6th Anniversary~ Lucky Bag Summoning Campaign

Trivia

Images

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