

Introduction
Mysterious Heroine X (Alter) is a 5-star servant in Fate/Grand Order with the Star attribute. Mysterious Heroine X (Alter)'s class is Berserker.
On our Fate/Grand Order tier list Mysterious Heroine X (Alter) is A tier, 71st of the 366 servants ranked, from where 5 current tier lists put Mysterious Heroine X (Alter).
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 (Alter) is voiced by Ayako Kawasumi in Japanese.
Stories
7Character details
A visiting villain from the Servant Universe.
Orphaned and alone, she is a Berserker bookworm with a burning Mana Conversion Altereactor Engine for a heart.
The Ultimate Anti-Anti Saber Weapon, sworn to defeat Mysterious Heroine X at all costs.
"What the heck are you talking about?"
...Don't think. Feel.
Profile 1
The fallen knight, Lord Pendragon.
Height/Weight: 154cm, 42kg
Origin: 2019 Valentine's Day Event
Region: The Servant Universe
Alignment: Neutral-Evil
Sub-Attribute: Star
Gender: Female
Her prized Evil Sacred Sword Necro-calibur was purchased from a shady online shop.
Profile 2
"I'll fight. Until the day I defeat Heroine X and paint the galaxy with the Villains' darkness."
Her trusty Voloid K6-X4, a.k.a. "Mini Black Knight," watches over her as she shouts her declaration. One could also say that the Voloid is just goofing off on the job.
Profile 3
A young girl who is serious and reserved.
Her favorite food is anything sweet. Given the opportunity, she asks for high-end Japanese sweets. Since she's always hungry, it can get expensive.
On her days off, she does not move one step from the Black Round Table kotatsu, preferring to spend her time reading or listening to music.
She is a bit of a slob and she finds most things to be bothersome.
While she responds with sarcasm whenever someone gives her orders, she is, oddly enough, quite obedient.
It's easy if you bribe her with sweet things.
Profile 4
An Alternium crystal embedded within her Mana Conversion Altereactor Engine converts calories into magical energy.
"Japanese Wasanbon sugar's elemental balance has the best conversion rate. Oh, and I want green tea," she emphasizes.
Her glasses are a necessity, to rest her boosted optic nerves. When she wears them, her vision actually gets worse.
She possesses a mysterious item called "∞ (Infinity) Black Bean Paste." It is made from the six atomic energies: desire (soul), sugar (power), store (space), SRP (reality), production (time), and demand (mind). It is said to grant its owner infinite power, but X Alter doesn't really get it.
Profile 5
The last successor of the now-annihilated dark chivalric order, the Dark R.O.U.N.D.S.
Her given title is Lord Pendragon.
She has various special moves, such as her telekinetic "Alter Choke" and the "Alter Lightning" she shoots from her fingers. Both look a little familiar.
Her Evil Sacred Sword Necro-calibur, which emits red magical energy, can freely change its form. Twin blades or even a chainsaw form are possible, but it often breaks and explodes.
"The cooler a weapon looks, the weaker it is," seems to be the common understanding across all the universe.
Ultimately, a regular longsword is a safer bet.
Additional profile
A synthetic Servant who was molded through forbidden magecraft by extracting the X gene from Mysterious Heroine X. She instinctively tries to rid herself of Heroine X, but she is unaware that her reason for doing so is the self-loathing and self-destructive tendencies of an Alter.
The impulses that make her tend to go out of control may be held in check by a good Master.
Stats
- HP14,175
- ATK11,113
- Star generation5%
- Star absorption9
- Death rate37.3%
- NP gain per hit1.07%
- NP gain when hit5%
At level 90. Each bar is measured against the highest value in the Fate/Grand Order roster.
Skills
11∞ Chestnut Paste EX
Skill 1Increase HP Recovery amount (3 turns) & restore HP & restore HP each turn (3 turns) ▲ & increase Quick Card Critical Strength (1 time, 3 turns) ▲ & increase Arts Card Critical Strength (1 time, 3 turns) ▲ & increase Buster Card Critical Strength (1 time, 3 turns) ▲ for yourself HP Recover Up: 50% HP Recovery Per Turn: 1000 Critical STR Up (Quick): 30% Critical STR Up (Arts): 30% Critical STR Up (Buster): 30% Cooldown: 5 turns
At skill level 10
Ephemeral Shadowless Blade C+
Skill 2Increase Quick Card effectiveness ▲ (3 turns) + Gain a large amount of Critical Stars ▲ for yourself Quick Up: 30% C. Star Gain: 20 Critical Rate Up: 25% Cooldown: 5 turns
At skill level 10
King's Invisible Hand C
Skill 3Decrease C. Star Gather Rate (1 turn) for one ally + increase ATK (3 turns) for all allies C. Star Gather Down: 100% Critical Rate Up: 5% ATK Up: 20% Cooldown: 5 turns
At skill level 10
Cross Calibur
Noble PhantasmQuick, rank EX, Anti-Personnel. Apply Special Attack [Good] (1 turn) for yourself ▲ + Deal significant Special Attack damage to a single [Saber-class Servant] enemy ▲ <Special Attack damage increases with Overcharge> STR Up vs. Good: 50% Damage: 1600% at NP1, 2400% at NP5
Madness Enhancement C
Class skillSlightly increase your Buster Card effectiveness
Altereactor A
Class skillIncrease your Debuff Resist
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-Assassin (Crit. Res. Up)
Append skill 3Increase Critical Resistance against [Assassin] 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



