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Servant Interlude Interlude 2 Interlude 3 Dialogue Strengthen
Bryn2 This Servant is a limited Servant. It is only available during special summoning campaigns. When no such campaigns are active, this Servant cannot be summoned. No plans have been revealed to add this Servant to the permanent summoning pool.

This page is for the Assassin version. For ★5 Berserker, please refer to Mysterious Heroine X (Alter).

Assassinicon

Mysterious Heroine X

★ ★ ★ ★ ★


Japanese Name: 謎のヒロインX
AKA: MHX
ID: 86 Cost: 16
ATK: 1817/11761 HP: 1862/12696
Grail ATK: 12874 Grail HP: 13909
Voice Actor: Kawasumi Ayako Illustrator: BUNBUN
Attribute: Star Growth Curve: Linear
Star Absorption: 98 Star Generation: 25.6%
NP Charge ATK: 0.81% NP Charge DEF: 4%
Death Resist: 38.5%
Traits: Female, Artoria, Humanoid, Dragon, Riding, Saberface, Servant, King
QQAAB
Quickicon4  |  Artsicon2  |  Bustericon1  |  Extraicon4

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

Mysterious Heroine X was available for summoning during the Saber Wars Event and F/GO Fes. 2017 2nd Anniv. Lucky Bag Summoning Campaign.

Active Skills

Available from the start
Stun
Fire Support EX
Gain a delayed stun buff. If present after attacking on the next turn, has a chance to stun all enemies for 1 turn.
Level 12345678910
Stun Chance 60%62%64%66%68%70%72%74%76%80%
Cooldown 10 98

Unlocks after 1st Ascension
Critnormal
Instinct C+
Gain critical stars.
Level 12345678910
Stars + 45678910111214
Cooldown 7 65

Strengthen Replace Instinct
Invishield
Star of Saber C++
Grants self invincibility for 1 turn.
Gain Critical Stars.
Level 12345678910
Stars + 10111213141516171820
Cooldown 7 65

Unlocks after 3rd Ascension
Critgem
Galaxy Meteor Sword C
Increases own critical star generation rate against Saber enemies for 3 turns.
Increases own attack against Saber enemies for 3 turns.
Level 12345678910
Star Rate + 50%55%60%65%70%75%80%85%90%100%
Attack + 30%32%34%36%38%40%42%44%46%50%
Cooldown 8 76

Passive Skills

1
Riding
Riding EX
Increases damage of own Quick cards by 12%.
2
Critgem
Cosmo Reactor A
Increases own critical star generation rate by 10%.

Noble Phantasm

Himitsucalibur (Secretcalibur)
Sword of Unnamed Victory
Rank Classification Type Hit-Count
A+ Anti-Personnel Quick 12
Base NP Effect Deals damage to one enemy.
NP Level
Damage +
12345
1200%1600%1800%1900%2000%
Overcharge Effect Deals extra damage against Saberface enemies.For more details
Charge
Extra Damage +
100%200%300%400%500%
150%162.5%175%187.5%200%

Himitsucalibur (Secretcalibur)
Sword of Unnamed Victory
Rank Classification Type Hit-Count
EX Anti-Personnel Quick 12
Base NP Effect Deals damage to one enemy.
NP Level
Damage +
12345
1600%2000%2200%2300%2400%
Overcharge Effect Deals extra damage against Saberface enemies.For more details
Charge
Extra Damage +
100%200%300%400%500%
150%162.5%175%187.5%200%

Ascension

Item 1 Item 2 Item 3 Item 4 QP
1st Assassin piece5 Qp100,000
2nd Assassin piece12 Dragon fang18 Qp300,000
3rd Assassin monument5 Dragons reverse scale2 Phoenix plume8 Qp1,000,000
4th Assassin monument12 Dragons reverse scale4 Heros proof36 Qp3,000,000

Skill Reinforcement

Item 1 Item 2 Item 3 Item 4 QP
1st Shiningassassin5 Qp200,000
2nd Shiningassassin12 Qp400,000
3rd Magicassassin5 Qp1,200,000
4th Magicassassin12 Phoenix plume4 Qp1,600,000
5th Secretassassin5 Phoenix plume8 Qp4,000,000
6th Secretassassin12 Dragon fang12 Qp5,000,000
7th Voids refuse12 Dragon fang24 Qp10,000,000
8th Voids refuse36 Octuplet twin crystals24 Qp12,000,000
9th Crystallized lore1 Qp20,000,000

Stats

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

Bond Level

Bond Level 1 2 3 4 5 6 7 8 9 10
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 Annihilation List
When equipped on Mysterious Heroine X, all allies will inflict 20% bonus damage against [Saber] while on the field.

Biography

Height/Weight: 154cm ・42kg
Series: Back Alley Satsuki - Chapter Heroine Sanctuary
Source: TYPEMOON April Fools 2013
Country of Origin: Servant World
Alignment: Chaotic ・ Neutral
Gender: Female

A stranger visiting from a mysterious dimension called Servant Universe. Claiming to be the definitive version of the Saber class, an Anti-Saber Decisive Weapon that performs fair-and-square surprise attacks as a knight.

Code Name: A-X.

She uses the mysterious magical sword "Himitsucalibur" to exterminate all of her enemies.

The Artorian race is like cancer to the universe. Someone has to exterminate all of them. Someone has to.
Saying so with a bitter expression on her face, Heroine X left her hometown. Even today, her beloved machine Du Stallion II races through the sea of stars.

Unlike most servants, she wears an informal and sporty outfit. The blue scarf is a symbol of courage, while the hat serves to conceal both her identity and her cowlick. It sticks out-it sticks out-it really sticks out.

As an Anti-Saber Decisive Weapon, she normally goes into a carnage mode wielding her single holy sword for the sole purpose of defeating all present Sabers, but she has opened her heart towards Saber Lily alone.

Before coming here, she saved an ancient royal dynasty from a crisis, settled the internal strife of the Mankind Integration Union, and routed invaders from another universe, but, for her, that was akin to a snack before breakfast. Since it was so trivial, it seems as though she does not remember.

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

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

Trivia