BerserkerIntroduction
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 the combined Fate/Grand Order tier list Mysterious Heroine X (Alter) is A tier, 56th of the 363 servants ranked, from where 3 community 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.
Mysterious Heroine X (Alter)'s banners
All banners- 7 November 2026 to 21 November 2026On the banner now, 100 Million Downloads Worldwide Mysterious Heroine X (Alter) Pickup Summon
- 18 September 2026 to 19 September 202625 Million Downloads Mysterious Heroine X (Alter) Pickup Summon
- 2 February 2026 to 5 February 2026Valentine's 2026 Pre-Release Mysterious Heroine X (Alter) Pickup Summon
- 14 February 2025 to 17 February 2025Revival: Valentine's 2019 Mysterious Heroine X (Alter) Pickup Summon
- 12 August 2024 to 14 August 202421 Million Downloads Mysterious Heroine X (Alter) Pickup Summon
- 30 January 2024 to 1 February 2024Valentine's 2024 Pre-Release Mysterious Heroine X (Alter) Pickup Summon
- 20 April 2023 to 1 May 2023FGO Waltz Collaboration Event Mysterious Heroine X (Alter) Pickup Summon
- 30 August 2022 to 13 September 2022Back to School Campaign 2022 Pickup Summon (Daily)
- 24 October 2021 to 7 November 2021SABER WARS 2 Pickup 2 Summon
- 5 April 2021 to 19 April 202113 Million Downloads Pickup Summon (Daily)
Profile
Mysterious Heroine X (Alter) is voiced by Ayako Kawasumi in Japanese. BUNBUN drew her.
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
- HP57th of 41914,175
- ATK121st of 41911,113
- Star generation382nd of 4195%
- Star absorption394th of 4199
- Death rate284th of 41937.3%
- NP gain per hit29th of 4191.07%
- NP gain when hit1st of 4195%
At level 90. Each bar is measured against the highest value in the Fate/Grand Order roster, and the place is out of every servant with that stat, lowest first for Death rate.
HP and ATK by level
- HP
- ATK
Level 90 is the natural cap for a 5-star; 100 takes 10 Holy Grails and 120 another 20 grails plus Servant Coins, before Fou cards (up to 2,000 HP and 2,000 ATK) and Craft Essences.
Cards and generation
- Arts hits
- 2 (33/67%)
- Extra hits
- 5 (6/13/20/26/35%)
- Quick hits
- 3 (16/33/51%)
- Buster hits
- 4 (10/20/30/40%)
- Star generation
- 5%
- Star absorption
- 9
- Death rate
- 37.3%
- Party cost
- 16
- NP gain per hit (Arts / Quick / Buster / Extra)
- 1.07% / 1.07% / 1.07% / 1.07%
- NP gain when hit
- 5%
Skills
3
∞ Chestnut Paste EX
Skill 1 (strengthened)LevelIncrease 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 (self, 3 turns)
- 50%
- gainHp (self)
- 2000
- HP Recovery Per Turn (self, 3 turns)
- 1000
- Critical STR Up (Quick) (self, 3 turns, 1 time)
- 30%
- Critical STR Up (Arts) (self, 3 turns, 1 time)
- 30%
- Critical STR Up (Buster) (self, 3 turns, 1 time)
- 30%
- Cooldown
- 5 turns
Ephemeral Shadowless Blade C+
Skill 2 (strengthened)LevelIncrease Quick Card effectiveness (3 turns) + Gain a large amount of Critical Stars for yourself
- Quick Up (self, 3 turns)
- 30%
- C. Star Gain (self)
- 20
- Critical Rate Up (self, 2 turns)
- 25%
- Cooldown
- 5 turns
King's Invisible Hand C
Skill 3LevelDecrease C. Star Gather Rate (1 turn) for one ally + increase ATK (3 turns) for all allies
- C. Star Gather Down (one ally, 1 turn)
- 100%
- Critical Rate Up (another ally, 1 turn)
- 5%
- ATK Up (all allies, 3 turns)
- 20%
- Cooldown
- 5 turns
Before the strengthening quests (2)
∞ Black Bean Paste EX
Skill 1LevelIncrease HP Recovery amount (3 turns) & restore HP for yourself
- HP Recover Up (self, 3 turns)
- 50%
- gainHp (self)
- 2000
- Cooldown
- 5 turns
Intuition C
Skill 2LevelGain a large amount of Critical Stars
- C. Star Gain (self)
- 14
- Critical Rate Up (self, 2 turns)
- 20%
- Cooldown
- 5 turns
Noble Phantasm
Cross Calibur
Rank EX · Anti-Personnel · 9 hits · strengthenedApply 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 (self, 1 turn)
- 50%
- Damage (extra against the target trait) (one enemy)
- 2400%
Before the strengthening quest
Cross Calibur
Rank A+ · Anti-Personnel · 9 hitsDeal significant Special Attack damage to a single [Saber-class Servant] enemy <Special Attack damage increases with Overcharge>
- Damage (extra against the target trait) (one enemy)
- 2000%
Class and append skills
Slightly increase your Buster Card effectiveness
- Buster Up
- 6%
Increase your Debuff Resist
- Debuff Resist Up
- 20%
Increase Extra Attack Card's effectiveness by 50% for yourself
Begin battle with NP charged at 20% for yourself
Increase Critical Resistance against [Assassin] class by 30% for yourself
Increase Critical Strength by 30% for yourself
Apply 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)
Ascensions and costumes
4
Ascension 1
Ascension 2
Ascension 3
Ascension 4
Materials
Ascension
- Ascension 1Materials:
Berserker Piece x5QP: 100,000 QP - Ascension 2Materials: Berserker Piece x12
Dragon Fang x18QP: 300,000 QP - Ascension 3Materials:
Berserker Monument x5
Great Knight Medal x20
Primordial Lanugo x3QP: 1,000,000 QP - Ascension 4Materials: Berserker Monument x12Primordial Lanugo x6
Dragon's Reverse Scale x5QP: 3,000,000 QP
4,400,000 QP for all four ascensions.
Skill enhancement (one skill)
- Level 1 to 2Materials:
Gem of Berserker x5QP: 200,000 QP - Level 2 to 3Materials: Gem of Berserker x12QP: 400,000 QP
- Level 3 to 4Materials:
Magic Gem of Berserker x5QP: 1,200,000 QP - Level 4 to 5Materials: Magic Gem of Berserker x12Great Knight Medal x10QP: 1,600,000 QP
- Level 5 to 6Materials:
Secret Gem of Berserker x5Great Knight Medal x20QP: 4,000,000 QP - Level 6 to 7Materials: Secret Gem of Berserker x12Dragon Fang x12QP: 5,000,000 QP
- Level 7 to 8Materials: Dragon Fang x24
Black Beast Grease x4QP: 10,000,000 QP - Level 8 to 9Materials: Black Beast Grease x11
Cursed Beast Gallstone x10QP: 12,000,000 QP - Level 9 to 10Materials:
Crystallized Lore x1QP: 20,000,000 QP
54,400,000 QP to take one skill from 1 to 10, 163,200,000 QP for all three. Append skills share the same table for their levels, paid in the same materials plus Servant Coins to unlock.
Append skill enhancement (one skill)
- Level 1 to 2Materials: Gem of Berserker x5QP: 200,000 QP
- Level 2 to 3Materials: Gem of Berserker x12QP: 400,000 QP
- Level 3 to 4Materials: Magic Gem of Berserker x5QP: 1,200,000 QP
- Level 4 to 5Materials: Magic Gem of Berserker x12Primordial Lanugo x3QP: 1,600,000 QP
- Level 5 to 6Materials: Secret Gem of Berserker x5Primordial Lanugo x6QP: 4,000,000 QP
- Level 6 to 7Materials: Secret Gem of Berserker x12Dragon's Reverse Scale x2QP: 5,000,000 QP
- Level 7 to 8Materials: Dragon's Reverse Scale x4
Reactor Core of Dawn x4QP: 10,000,000 QP - Level 8 to 9Materials: Reactor Core of Dawn x11
Fragment of a Twinkling Star x10QP: 12,000,000 QP - Level 9 to 10Materials: Crystallized Lore x1QP: 20,000,000 QP
Palingenesis (Holy Grails)
- 1Level cap: 92QP: 10,000,000 QP
- 2Level cap: 94QP: 11,000,000 QP
- 3Level cap: 96QP: 12,000,000 QP
- 4Level cap: 98QP: 13,000,000 QP
- 5Level cap: 100QP: 15,000,000 QP
- 6Level cap: 102QP: 15,000,000 QP
- 7Level cap: 104QP: 15,000,000 QP
- 8Level cap: 106QP: 15,000,000 QP
- 9Level cap: 108QP: 15,000,000 QP
- 10Level cap: 110QP: 15,000,000 QP
- 11Level cap: 112QP: 15,000,000 QP
- 12Level cap: 114QP: 15,000,000 QP
- 13Level cap: 116QP: 15,000,000 QP
- 14Level cap: 118QP: 15,000,000 QP
- 15Level cap: 120QP: 0 QP
Each summon of this servant gives 90 Servant Coins.
Bond
- 5,000Bond 2: 9,000Bond 3: 14,000Bond 4: 20,000Bond 5: 250,000Bond 6: 500,000Bond 7: 800,000Bond 8: 1,180,000Bond 9: 1,618,000Bond 10: 2,708,000
Total bond points to reach each level.
Apply 20% Special Attack [Saber] for all allies only if Mysterious Heroine X [Alter] (Berserker) is equipped with this Craft Essence when she is on the field
Voice lines
58Home (15)
- Birthday
- Your birthday? I hate birthdays... But I suppose it is good to celebrate for others. Congratulations.
- During an Event
- (Sniff) I smell something sweet somewhere... We can't just wait here, right? No time to check like the present.
- Conversation 1
- Master? Could we perhaps go out in search of some new sweets?
- Conversation 2
- Yes, yes. Master, you're my liege, my home. What? We're out of snacks...? Well. I'm going to sleep, then.
- Conversation 3
- I was brought into this existence as an honorable knight meant to rule the galaxy. Now, as my leader, you must certainly have a high... Hmm? Uhh...what's that you got behind your back? Go ahead, tell me what you want. Anything.
- Likes
- Well, it might not be that I "like" them, per se, but my Altereactor requires a certain level of sugar to run... And nice Japanese sweets are just the perfect fuel for it. Particularly the expensive ones from long established shops. Every single day, yes.
- Dislikes
- Well, I did not like Heroine X... Now, though, I dislike lots of other things, too. I never imagined that I could change so much...
- Bond Level 1
- Do you need something? I have red bean on my face? Oh, thanks.
- Bond Level 2
- I can hardly comprehend how THIS could be the room of mankind's savior... But it sure is nice and quiet. I like it, Master.
- Bond Level 3
- Woosh....swoosh... Shoooom, bzzzzrt! Wha?! Were you watching?! You saw my secret training?!
- Bond Level 4
- Did you know? I'm actually a bit strange. Because of my class, I mean. You just look so yummy to me. Mind if I just take a little bite? ...Just a lick, then?
- Bond Level 5
- Wow... Is it just me or is it hot in here? Can I step outside...? Oh, no, go ahead. Continue...
- Conversation 4
- X was my very first friend. I hope I can give her my thanks someday. Oh, no, not like that. But I wish she'd hurry up and clean our room. This is why I can't stand chaotic alignment types...
- Conversation 5
- I can't stand that white knight, the Saber who claims to be X's disciple... Just the thought of it makes me hungry to the core... I couldn't resist, so I just hopped on Galactic Amazonu and ordered some strawberry daifuku delivered via sub-light flight.
- Conversation 6
- Oh, I misjudged you, Master. Just now I saw one of my fellows. Yes, when it comes to Heroic Spirit summoning, everything begins with Alters and ends with Alters. And once you start down the Alter path, forever will it dominate your destiny.
Growth (5)
- Level up
- A bit of a growth spurt. [id 702400_0_G011]Eat well and grow strong, they say.
- Ascension 2
- My Altereactor is now more powerful. [id 702400_0_G021]This is excellent.
- Ascension 1
- Well, I guess this makes it easier to move. Hurray. [id 702400_0_G031]But can I go change, now?
- Ascension 3
- I feel kind of conflicted about showing you this battle uniform. [id 702400_0_G041]Unlimited power... [id 702400_0_G042]Do keep me locked down, Master.
- Ascension 4
- I leave all the power in this tiny body of mine to you. [id 702400_0_G051]You will be my anger and my joy. [id 702400_0_G052]'Til death do us apart.
First summon (1)
- Summon
- Heroine X Alter... I am a Berser... I mean, Saber-class... Yes, Saber, probably... Don't you think this room is rather cold? Can I just hack up that useless heater there?
Event (18)
- Attack 1
- Hrmph!
- Attack 2
- Take that...
- Attack 3
- Fall.
- Extra Attack
- Pierce it to the core!
- Skill 1
- Will this do...?
- Skill 2
- Here goes.
- Battle Start 1
- Can I go home yet?
- Battle Start 2
- Let's end this in five seconds.
- Victory 1
- Time to replenish some sugar. Master, hurry.
- Victory 2
- Well, I am the heroine, after all... Phew.
- Damage 2
- Hyaah...
- Damage 1
- That hurts...
- Incapacitated 1
- Being down in the dirt isn't so bad...
- Incapacitated 2
- I'm so...hungry...
- Command Card 1
- Yes.
- Command Card 2
- Understood.
- Command Card 3
- Very well.
- Noble Phantasm Card
- I've been waiting for this moment.
My Room (1)
- Noble Phantasm
- Altereactor critical! [id 702400_0_B051]My dark light will return you to particle form! [id 702400_0_B052]Cross Calibur!
Bond (18)
- Revival: Chocolate Lady's Commotion -Valentine's 2018- Expanded 1
- Happy Valentine's Day. I hope your love is met well...
- Revival: Chocolate Lady's Commotion -Valentine's 2018- Expanded 2
- No one will notice if I just take one... Oh, uh, welcome!
- Revival: Chocolate Lady's Commotion -Valentine's 2018- Expanded 3
- What is this sweet, yet bitter feeling... Could this be...hunger?
- Revival: Chocolate Lady's Commotion -Valentine's 2018- Expanded 4
- This, yes? Here you are.
- Revival: Chocolate Lady's Commotion -Valentine's 2018- Expanded 5
- This is the top item here.
- Revival: Chocolate Lady's Commotion -Valentine's 2018- Expanded 6
- Do come again.
- Revival: Chocolate Lady's Commotion -Valentine's 2018- Expanded 7
- This wonderful season is almost at an end. It's time to put your thoughts into action. Make sure you get your items soon.
- Revival: Chocolate Lady's Commotion -Valentine's 2018- Expanded 8
- Valentine's is at its end. Which means this shop will be closing up, too. Running this shop wasn't all that bad...
- Revival: Chocolate Lady's Commotion -Valentine's 2018- Expanded 9
- Happy Valentine's Day. I feel a disturbance in the sweets!
- Revival: Chocolate Lady's Commotion -Valentine's 2018- Expanded 10
- Hand made or store bought, chocolate is chocolate, and chocolate is delicious.
- Revival: Chocolate Lady's Commotion -Valentine's 2018- Expanded 11
- Red bean, kinako, zunda bean, sweet chestnut... Oh the choices! Sorry, a little busy here...
- Revival: Chocolate Lady's Commotion -Valentine's 2018- Expanded 12
- Finished exchanging for all your items? Even if you don't quite make it this year, there's always next year. Anyway, we must be sure to beat X.
- Revival: Chocolate Lady's Commotion -Valentine's 2018- Expanded 13
- The days of Chaldea's cocoa charge marking a steady 300% have come to an end. Next year is going to be all Japanese-style sweets.
- Revival: Chocolate Lady's Commotion -Valentine's 2018- Expanded 14
- Happy Valentine's Day. May you be blessed with the bravery of love.
- Revival: Chocolate Lady's Commotion -Valentine's 2018- Expanded 15
- Welcome. Allow me to assist you.
- Revival: Chocolate Lady's Commotion -Valentine's 2018- Expanded 16
- If this is a gift, I can wrap it for you. Will wire and glue do?
- Revival: Chocolate Lady's Commotion -Valentine's 2018- Expanded 17
- Well, that certainly was a fuss. Make sure you don't forget to exchange for items. X must go down.
- Revival: Chocolate Lady's Commotion -Valentine's 2018- Expanded 18
- A sale? Oh, no no no. Don't give up until the end! Oh, and, I will be taking anything that's left over. Don't you worry.
Voiced by Ayako Kawasumi. Illustrated by BUNBUN.
Art
