Mysterious Heroine X (Alter)

This is a Limited Servant

They are only available during special summoning campaigns. When no such campaigns are active, this Servant cannot be summoned.

This article is about 5★ Mysterious Heroine X (Alter). For other variations, see Artoria (Disambiguation).

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★ ★ ★ ★ ★

Mysterious Heroine X (Alter)

Japanese Name: 謎のヒロインＸ〔オルタ〕
AKA:AKA:Also Known As Heroine X AlterHeroine X AlterBattle Name, MHX Alter, MHXA, Ecchan
ID: 155	Cost: 16
ATK:ATK:Servant's minimum and maximum attack stat without Status Up Cards. 1,717 / 11,113	HP:HP:Servant's minimum and maximum HP (Health) without Status Up Cards. 2,079 / 14,175
Lv.100 Grail ATK:Lv.100 Grail ATK:Servant's maximum attack stat with Holy Grail at Lv.100 without Status Up Cards. 12,165	Lv.100 Grail HP:Lv.100 Grail HP:Servant's maximum HP (Health) with Holy Grail at Lv.100 without Status Up Cards. 15,529
Lv.120 Grail ATK:Lv.120 Grail ATK:Servant's maximum attack stat with Holy Grail at Lv.120 without Status Up Cards. 14,279	Lv.120 Grail HP:Lv.120 Grail HP:Servant's maximum HP (Health) with Holy Grail at Lv.120 without Status Up Cards. 18,251
Voice Actor: Kawasumi Ayako	Illustrator: BUNBUN
Attribute: Star	Growth Curve: Semi S
Star Absorption: Star Absorption: Tooltip for 25px|bottom|link= Star Absorption:ⓘAffects how many critical stars this servant gets when the stars are distributed. 9	Star Generation: Star Generation: Tooltip for 25px|bottom|link= Star Generation:ⓘAffects how many critical stars this servant generates when attacking. 5%
NP Charge ATK: NP Charge ATK: Tooltip for 25px|bottom|link= NP Charge ATK:ⓘAffects how much the NP Gauge is increased by when attacking enemies. 1.07%	NP Charge DEF: NP Charge DEF: Tooltip for 25px|bottom|link= NP Charge DEF:ⓘAffects how much the NP Gauge is increased by when being attacked. 5%
Death Rate: Death Rate: Tooltip for 25px|bottom|link= Death Rate:ⓘChance of this servant being killed by the 'Instant-Kill' effect, lower numbers are better. Note that this rate is ONLY affect to player side. Enemy Servant has basically quite low rate. (0% ~ 1%) 37.3%	Alignments: Neutral・Evil
Gender: Female
Basic Traits: Arthur, Artoria Face, Dragon, Enuma Elish Nullification, Hominidae Servant, Humanoid, King, Round Table Knight, Servant, Seven Knights Servant, Spaceflight-able Servant
Hits:  33  |  22  |  44  |  55

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

Active Skills

• First Skill
• Second Skill
• Third Skill

• ∞ Chestnut Paste EX
• ∞ Black Bean Paste EX

Upgrades after Interlude 1, Replaces ∞ Black Bean Paste EX

	∞ Chestnut Paste EX
Increases own healing received for 3 turns. Recovers own HP. Recovers own HP by 1000 every turn for 3 turns. Increases own critical damage of Quick Cards for 1 attack, 3 turns. Increases own critical damage of Arts Cards for 1 attack, 3 turns. Increases own critical damage of Buster Cards for 1 attack, 3 turns.
Level	1	2	3	4	5	6	7	8	9	10
Heal Rate +	20%	23%	26%	29%	32%	35%	38%	41%	44%	50%
Heal +	1000	1100	1200	1300	1400	1500	1600	1700	1800	2000
Quick Crit Damage +	20%	21%	22%	23%	24%	25%	26%	27%	28%	30%
Arts Crit Damage +	20%	21%	22%	23%	24%	25%	26%	27%	28%	30%
Buster Crit Damage +	20%	21%	22%	23%	24%	25%	26%	27%	28%	30%
Cooldown	7					6				5

Available from the start

	∞ Black Bean Paste EX
Increases own healing received for 3 turns. Recovers own HP.
Level	1	2	3	4	5	6	7	8	9	10
Heal Rate +	20%	23%	26%	29%	32%	35%	38%	41%	44%	50%
Heal +	1000	1100	1200	1300	1400	1500	1600	1700	1800	2000
Cooldown	7					6				5

• Instantaneous Shadowless Blade C+
• Instinct C

Upgrades after Strengthen 1, Replaces Instinct C

	Instantaneous Shadowless Blade C+
Increases own Quick performance for 3 turns. Gains critical stars.
Level	1	2	3	4	5	6	7	8	9	10
Quick +	20%	21%	22%	23%	24%	25%	26%	27%	28%	30%
Stars +	10	11	12	13	14	15	16	17	18	20
Cooldown	7					6				5

Unlocks after 1st Ascension

	Instinct C
Gains critical stars.
Level	1	2	3	4	5	6	7	8	9	10
Stars +	4	5	6	7	8	9	10	11	12	14
Cooldown	7					6				5

Unlocks after 3rd Ascension

	Sovereign's Invisible Hand C
Reduces one ally's critical star absorption by 100% for 1 turn. Increases party's attack for 3 turns.
Level	1	2	3	4	5	6	7	8	9	10
Attack +	10%	11%	12%	13%	14%	15%	16%	17%	18%	20%
Cooldown	7					6				5

Passive Skills

1		Mad Enhancement C
	Increases own Buster performance by 6%.
2		Altereactor A
	Increases own debuff resistance by 20%.

Append Skills

• First Skill
• Second Skill
• Third Skill
• Fourth Skill
• Fifth Skill

Unlocks by consuming Servant Coins

	Extra Attack Finesse Improvement
Increases own Extra Attack performance.
Level	1	2	3	4	5	6	7	8	9	10
Extra Attack +	30%	32%	34%	36%	38%	40%	42%	44%	46%	50%

Unlocks by consuming Servant Coins

	Mana Loading
Starts battle with NP gauge charged.
Level	1	2	3	4	5	6	7	8	9	10
NP +	10%	11%	12%	13%	14%	15%	16%	17%	18%	20%

Unlocks by consuming Servant Coins

	Anti-Assassin Critical Attack Chance Resistance
Increases own critical attack chance resistance against Assassin enemies.
Level	1	2	3	4	5	6	7	8	9	10
vs. Assassin Crit Chance Res +	20%	21%	22%	23%	24%	25%	26%	27%	28%	30%

Unlocks by consuming Servant Coins

	Special Attack Finesse Improvement
Increases own critical damage.
Level	1	2	3	4	5	6	7	8	9	10
Crit Damage +	20%	21%	22%	23%	24%	25%	26%	27%	28%	30%

Unlocks by consuming Servant Coins

	Skill Reloading
Reduces the cooldown of the skill by 1 after activation for N times. (Once per skill) (N: Based on Skill Level.)
Level	1	2	3	4	5	6	7	8	9	10
Reduction Available Count +	1	1	1	1	1	2	2	2	2	3

Noble Phantasm

• Rank EX
• Rank A+
• Videos

Upgrades after Strengthen 2

Cross Calibur
Black Dragon Twinblade of Victory

Base Damage: x0.8	Rank	Noble Phantasm Type
	EX	Anti-Unit
	Hits	Per Hit Percentage
	9	2%, 4%, 6%, 8%, 11%, 13%, 15%, 17%, 24%
Effect	Increases own damage against enemies with Good Alignment by 50% for 1 turn. (Activates first)(Activates first)This effect activates first before dealing damage. Deals damage to one enemy.
NP Level	1	2	3	4	5
Damage +	1600%	2000%	2200%	2300%	2400%
Overcharge Effect	Deals extra damage to Saber Class Servant enemies.
Charge	100%	200%	300%	400%	500%
vs. Saber Class Servant Extra Damage x vs. Saber Class Servant Extra Damage x Tooltip for 25px|link= vs. Saber Class Servant Extra Damage xⓘThis value deals 100% = 1.0x and multiplied by base NP Damage. For more information about damage formula, see Battle pages.	150%	162.5%	175%	187.5%	200%

Cross Calibur
Black Dragon Twinblade of Victory

Base Damage: x0.8	Rank	Noble Phantasm Type
	A+	Anti-Unit
	Hits	Per Hit Percentage
	9	2%, 4%, 6%, 8%, 11%, 13%, 15%, 17%, 24%
Effect	Deals damage to one enemy.
NP Level	1	2	3	4	5
Damage +	1200%	1600%	1800%	1900%	2000%
Overcharge Effect	Deals extra damage to Saber Class Servant enemies.
Charge	100%	200%	300%	400%	500%
vs. Saber Class Servant Extra Damage x vs. Saber Class Servant Extra Damage x Tooltip for 25px|link= vs. Saber Class Servant Extra Damage xⓘThis value deals 100% = 1.0x and multiplied by base NP Damage. For more information about damage formula, see Battle pages.	150%	162.5%	175%	187.5%	200%

• Normal
• Arcade

Learn More About Fate/Grand Order Arcade

Ascension

n°	Item 1	Item 2	Item 3	Item 4	QP
1st	55				100,000100,000
2nd	1212	1818			300,000300,000
3rd	55	2020	33		1,000,0001,000,000
4th	1212	66	55		3,000,0003,000,000

Skill Reinforcement

• Active
• Append

n°	Item 1	Item 2	Item 3	Item 4	QP
1st	55				200,000200,000
2nd	1212				400,000400,000
3rd	55				1,200,0001,200,000
4th	1212	1010			1,600,0001,600,000
5th	55	2020			4,000,0004,000,000
6th	1212	1212			5,000,0005,000,000
7th	2424	44			10,000,00010,000,000
8th	1111	1010			12,000,00012,000,000
9th	11				20,000,00020,000,000

n°	Item 1	Item 2	Item 3	Item 4	QP
1st	55				200,000200,000
2nd	1212				400,000400,000
3rd	55				1,200,0001,200,000
4th	1212	33			1,600,0001,600,000
5th	55	66			4,000,0004,000,000
6th	1212	22			5,000,0005,000,000
7th	44	44			10,000,00010,000,000
8th	1111	1010			12,000,00012,000,000
9th	11				20,000,00020,000,000

Stats

Strength:Strength:Bodily might in terms of power. A	Endurance:Endurance:How much damage one can withstand. B
Agility:Agility:Quickness and speed of reaction. B	Mana:Mana:How much magical energy can be handled. A+
Luck:Luck:The quality of one's luck. C	NP:NP:The strength of the Noble Phantasm one owns. While the ranking will often match their strongest Noble Phantasm, it will sometimes only reflect a secondary Noble Phantasm, or display a ranking higher or lower than their available wares. A++

Bond Level

Bond Level	1	2	3	4	5	6	7	8	9	10
Bond Required	2,000	3,000	4,000	5,000	6,000	230,000	250,000	300,000	380,000	438,000
Total Bond	2,000	5,000	9,000	14,000	20,000	250,000	500,000	800,000	1,180,000	1,618,000
Rewards	55	55	55	55	55	55 33	2020 33	2020 33	2020 33	4040 Bond CE
Bond 10 Craft Essence				Dark Knight-Kun When equipped on Mysterious Heroine X (Alter), Increases party's damage against Saber enemies by 20% while self is on the field.
Chaldean Visionary Flames [?][?]Requirement to unlock Max Bond Capacity	11		12		13		14		15
	1,090,000		1,230,000		1,360,000		1,500,000		1,640,000
	2,708,000		3,938,000		5,298,000		6,798,000		8,438,000
Rewards	5050 3030		6060 3030		6060 3030		6060 3030		6060 3030

Biography

“ Tempted by the scent of sweets, it's an inva... roommate from outer space! ”

Unlock	Description	Translation🛈🛈|nbx= for north american localization release and |bx = for fan english translation
Default	サーヴァント・ユニヴァースより来訪した 天涯孤独のヴィラン（悪役）。 世にも珍しい文系のバーサーカー。 魔力転換炉オルトリアクターを燃やし 謎のヒロインXの打倒を誓う、 対・対セイバー用決戦兵器。 もう訳が分からない、だって？ ―――考えるな。感じるんだ。	NA TL NA Localization: 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. Fan Translation: A Villain (antagonist), the last of her kind, on a visit from the Servant Universe. A hard-to-come-by literary Berserker. An Anti-Anti-Saber final weapon who swears to defeat Mysterious Heroine X whilst fuelling her magical energy converter, the Altreactor. You don't know what's going on anymore, you say? ---Don't think. Feel.
Bond 1	没落の騎士ペンドラゴン卿 身長／体重：154cm・42kg 出典：2017年バレンタインイベント 地域：サーヴァント・ユニヴァース 属性：中立・悪　　副属性：星　　性別：女性 じまんのつるぎ『邪聖剣ネクロカリバー』は あやしいつうはんでかった。	NA TL NA Localization: The fallen knight, Lord Pendragon. Height/Weight: 154cm, 42kg Origin: 2019 Valentine's Day Event Region: The Servant Universe Alignment: Neutral-Evil Gender: Female Her prized Evil Sacred Sword Necro-calibur was purchased from a shady online shop. Fan Translation: Fallen Knight Sir Pendragon Height/Weight: 154 cm / 42 kg Source: 2017 Valentine's Event Region: Servant World Alignment: Neutral・Evil Attribute: Star Gender: Female Her prided sword, 'Wicked Holy Sword Necrocalibur', was bought online from a shady vendor.
Bond 2	「闘うよ。ヒロインXを倒し、 　宇宙をヴィランの闇色に染める、その日まで」 そう誓う彼女をヴォロイド“Ｋ６－Ｘ４” 通称“黒騎士くん”はいつも陰から見守っている。 適当に隠れてサボっているとも言う。	NA TL NA Localization: "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. Fan Translation: 'I'll fight. Until the day I defeat Heroine X, and stain the universe with the darkness of villainy.' The voroid 'K6-X4'—a.k.a. 'Black Knight-kun'—is always watching over the girl and her oath from the shadows. In other words, he's hiding away and being lazy on a whim.
Bond 3	まじめで控えめな態度の少女。 好物は甘味。隙あらば高級和菓子を所望してくる、 割と金のかかる腹ぺこ。 オフの日は黒い円卓型のこたつから一歩も出ず、 読書をしたり音楽を聴いたりして過ごす。 基本ずぼらで面倒くさがり。 他人からの命令や指図には、皮肉を返しつつも それなりに素直に従うのは不思議。 甘い物で釣ると早い。	NA TL NA Localization: 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. Fan Translation: A serious and reticent young girl. Has a sweet tooth. If you give her the chance, she'll request luxury Japanese sweets. A relatively costly glutton. On days off, she doesn't take a single step away from the Black Round Table-type kotatsu. There, she spends her day reading books and listening to music. She's basically a slob who can't be bothered. Curiously, she will follow orders and instructions, obedient in her own way, albeit served with a side of sarcastic retorts. Bait her with sweets to get her going.
Bond 4	魔力転換炉オルトリアクターは、体内に秘める オルタニウム結晶を触媒として、カロリーを 魔力へ変換する。 「和三盆糖の成分バランスが最大効率です。あと 　お茶もほしいです」と彼女は強調する。 眼鏡はブーストされた視神経を休ませるために 必要なアイテム。掛ける間はむしろ視力は落ちる。 彼女が所持している謎のアイテム 「∞（インフィニティ）黒餡子」は 欲求（ソウル）、糖分（パワー）、 売り場（スペース）、原価（リアリティ）、 製作（タイム）、需要（マインド）という 六つの原始力によって作られたもので、 持つ者に無限の力を与えるというがX・オルタは よく分かっていない。	NA TL NA Localization: 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. Fan Translation: The magical energy converter, the Altreactor, converts calories into magical energy, the Alternium crystals hidden in her body acting as a catalyst. 'The component balance of wasanbon sugar is the most effective. Also, I'll have some green tea,' she emphasizes. Spectacles are a necessary item to rest her boosted optic nerves. In fact, her eyesight deteriorates when putting them on. The mysterious item in her possession, the '∞ (Infinity) Black Bean Paste', was made through the six fundamental forces of Desire (Soul), Sugar (Power), Sales Location (Space), Cost Price (Reality), Production (Time), and Demand (Mind). Although said to grant infinite power to its wielder, X Alter doesn't really have a clue.
Bond 5	すでに壊滅し失われた暗黒の騎士団 ダーク・ラウンズに連なる最後の生き残り。 付与されし称号はペンドラゴン卿。 念動力“オルタ・チョーク”、腕先から魔力を 放出する絶技“オルト・ライトニング”など、 どこかで見たような多彩な技を駆使する。 赤い魔力を放つ“邪聖剣ネクロカリバー”は ツインブレードやチェーンソーなど 自在に変形するが、よく壊れて爆発する。 格好いい武器ほどあまり強くない、 というのは宇宙共通の掟らしい。 やはり何の変哲もないロングソードこそ至高。	NA TL NA Localization: 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. Fan Translation: The last survivor of an annihilated and lost order of dark knights, the Dark Rounds. The title bestowed on her is Sir Pendragon. She employs a variety of strangely familiar techniques such as the psychokinetic "Alter Choke" and the ultimate technique 'Alter Lightning', which releases magical energy from the forearms. Emitting crimson magical energy, the 'Wicked Holy Sword Necrocalibur' can be transformed into a twinblade or chainsaw at will, but frequently breaks and blows up. It seems to be a universal law that cool weapons aren't very powerful. All said and done, nothing beats the standard longsword.
Clear Interlude
Extra	「謎のヒロインX」から抽出されたX因子を元に、 禁断の魔術によって錬成された人造サーヴァント。 本能的にヒロインXを排除しようとするが、 その原因がオルタゆえの自己嫌悪と自己破壊の 感情にあるとは本人も気づいていない。 暴走する危険な衝動は、良きマスターを 持つことで安定をみせるかもしれない。	NA TL NA Localization: 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. Fan Translation: An artificial Servant created by forbidden magic, based on the X factor extracted from Mysterious Heroine X. Even though it tries to eliminate Heroine X instinctively, that person isn't aware that these feelings of self-loathing and self-destruction lies in her Alter nature. Her dangerous impulses to run amok may stay stable if the Master is a kind one.
April Fool	アルトリアサーヴァント 遠い宇宙からやってきた暗黒の食いしん坊。 和菓子のためなら地球を守ってもいいと言う。ライトノベルが大好き。	Artoria-Type Servant A girl pledged to the dark side who has a huge appetite. She is from a galaxy far, far away. So long as she's provided with Japanese sweets, she will protect Earth with all her might. Loves light novels.

Availability

Mysterious Heroine X (Alter) was available for summoning during the:

Valentine 2017 Summoning Campaign	Fes.2017～2nd Anniversary～Lucky Bag	New Year 2018 Lucky Bag Summoning Campaign
Valentine 2017 Summoning Campaign Re-Run	Fes.2018～3rd Anniversary～Lucky Bag	New Year Lucky-Bag Summoning Campaign 2019
16M Downloads Campaign	Fate/Grand Order Fes. 2019 ～4th Anniversary～ Lucky Bag Summoning Campaign	Saber Wars II Summoning Campaign 2
New Year Lucky-Bag Summoning Campaign 2020	Fate/Grand Order ～5th Anniversary～ Lucky Bag Summoning Campaign	Lucky Bag 2021 Summoning Campaign New Year Special
Grail Live	Fate/Grand Order ～6th Anniversary～ Lucky Bag Summoning Campaign	Lucky Bag 2022 Summoning Campaign New Year Special
Valentine 2022 Pre-Release Campaign	Fate/Grand Order ～7th Anniversary～ Lucky Bag Summoning Campaign	26M Downloads Summoning Campaign
Lucky Bag 2023 Summoning Campaign New Year Special	Valentine 2016-2022 Summoning Campaign Rerun	Lucky Bag 2024 Summoning Campaign New Year Special
Valentine 2024 Pre-Release Campaign

Trivia

• Mysterious Heroine X (Alter) is the Otaku Version of Mysterious Heroine X from April Fool. Rather than having the same personality, what they have is the opposite.
• She is 6th Class Alter Servant (Berserker) and she is also first★5 Artoria Alter Servant.
• Prior to her appearance in the game she was mentioned in FGO material as "「謎のセーラーX」".
• The original idea of "Infinity Chocolate" is Marvel's Infinity Stones and Infinity Gauntlet.
• オルト・ライトニング (Alter Lightning) is the name of her lightning attack.
  • オルト・ライトニング (Alter Lightning) and her double-bladed lightsaber is a parody of Red Lightning and the double-bladed lightsaber used by Darth Maul in Star Wars.
• Her Extra Attack animation is also a parody of Star Wars Episode 1 when Darth Maul killed Qui-Gon Jinn.
• Her third skill Sovereign's Invisible Hand is her "オルタ・チョーク" (Alter Choke), parody of Darth Vader's Force Choke in Star Wars.