

Introduction
Mysterious Heroine X is a 5-star servant in Fate/Grand Order with the Star attribute. Mysterious Heroine X's class is Assassin.
On our Fate/Grand Order tier list Mysterious Heroine X is B tier, 210th of the 366 servants ranked, from where 6 current tier lists put Mysterious Heroine X.
Other servants in Fate/Grand Order with the Star attribute: Altria Caster, Altria Caster (Berserker), Archetype Earth, Attila the San(ta), BB Dubai, Bedivere and 20 more.
Profile
Mysterious Heroine X is voiced by Ayako Kawasumi in Japanese.
Background
The one true "Wielder of the Holy Sword" has arrived from outer space.
Stories
7Character details
The Servant Universe.
That's where the stranger claims 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.
Profile 1
Height/Weight: 154cm, 42kg
Origin: April Fools Day, 2013
Region: The Servant Universe
Alignment: Chaotic-Good
Sub-Attribute: Star
Gender: Female
I will kill everyone using my sword, the "Secret Calibur."
Profile 2
"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.
Profile 3
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.
Profile 4
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.
Profile 5
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.
Additional profile
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.
Stats
- HP12,696
- ATK11,761
- Star generation25.6%
- Star absorption98
- Death rate38.5%
- NP gain per hit0.81%
- NP gain when hit4%
At level 90. Each bar is measured against the highest value in the Fate/Grand Order roster.
Skills
11Fire Support XEX EX
Skill 1Decrease DEF (3 turns) ▲ for all enemies + After 1 turn, medium chance to inflict Stun to all enemies (1 turn) DEF Down: 20% Cooldown: 7 turns
At skill level 10
Star of Saber C++
Skill 2Apply Invincible ▲ (1 turn) for yourself + Gain a large amount of Critical Stars ▲ C. Star Gain: 20 Critical Rate Up: 25% Cooldown: 5 turns
At skill level 10
Galactic Meteor Sword XEX A
Skill 3Significantly increase C. Star Drop Rate against [Saber] enemies (3 turns) & apply Special Attack [Saber] (3 turns) & increase ATK (3 turns) ▲ for yourself C. Star Drop Rate Up vs. Saber: 100% Critical Rate Up vs. Saber: 30% STR Up vs. Saber: 50% ATK Up: 20% Cooldown: 6 turns
At skill level 10
Secret Calibur
Noble PhantasmQuick, rank EX, Anti-Personnel. Deal significant damage to an [Altria Face] enemy ▲ <Special Attack damage increases with Overcharge> Damage: 1600% at NP1, 2400% at NP5
Cosmo Reactor A
Class skillIncrease your C. Star Drop Rate
Riding Skill EX
Class skillIncrease your Quick Card effectiveness
Extra Attack Boost
Append skill 1Increase Extra Attack Card's effectiveness by 50% for yourself
At skill level 10
Load Magical Energy
Append skill 2Begin battle with NP charged at 20% for yourself
At skill level 10
Anti-Saber (ATK Up)
Append skill 3Increase ATK against [Saber] class by 30% for yourself
At skill level 10
Special Attack Boost
Append skill 4Increase Critical Strength by 30% for yourself
At skill level 10
Skill Reload
Append skill 5Apply a state that "reduces skill cooldown by 1 after using it" (1 time <2 times at Lv. 6-9, 3 times at Lv. 10>, goes into effect only 1 time per skill)
At skill level 10



