GilgameshNotice This Servant is LOCKEDLocked until you complete E Pluribus Unum and will be added to the summoning pool once the quests are completed.
This article is for Class-Berserker-Gold Cú Chulainn (Alter). For 3★ Class-Lancer-Silver, see Cú Chulainn & Cú Chulainn (Prototype). For 3★ Class-Caster-Silver, see Cú Chulainn (Caster).
★ ★ ★ ★ ★

Cú Chulainn (Alter)

Japanese Name: クー・フーリン〔オルタ〕
AKA: Cú Alter, Mad King Cú Chulainn
ID: 98 Cost: 16
ATK: 1,979/12,805 HP: 1,790/12,210
Grail ATK: 14,017 Grail HP: 13,377
Voice Actor: Canna Nobutoshi Illustrator: Shimadoriru
Attribute: Earth Growth Curve: Reverse S
Critabsup Star Absorption: 9 Stargainup Star Generation: 5.1%
Npchargeup NP Charge ATK: 0.69% NPGainUpDmg NP Charge DEF: 5%
Instapowerup Death Rate: 52% Alignments: Chaotic・Evil
Gender: Male
Traits: Brynhildr's Beloved, Divine, Humanoid, Male, Servant, Weak to Enuma Elish
Hits:  Quickicon4  |  Artsicon3  |  Bustericon3  |  Extraicon5
Active Skills Passive Skills Noble Phantasm Ascension Skill Upgrade
Stats Bond Level Biography Trivia Images

 Active Skills

Available from the start
Madness of the Spirits A
Reduces all enemies' attack for 3 turns.
Reduces their critical attack chance for 3 turns.
Level 12345678910
Attackdown Attack - 10% 11% 12% 13% 14% 15% 16% 17% 18% 20%
Critchndown Crit Chance - 30% 32% 34% 36% 38% 40% 42% 44% 46% 50%
Cooldown 8 76

Unlocks after 1st Ascension
Protection from Arrows C
Avoid Grants self Evasion for 2 attacks.
Increases own defense for 3 turns.
Level 12345678910
Defenseup Defense + 7% 7.7% 8.4% 9.1% 9.8% 10.5% 11.2% 11.9% 12.6% 14%
Cooldown 7 65

Unlocks after 3rd Ascension
Battle Continuation A
Grants self Guts status for 1 time, 5 turns.
Level 12345678910
Gutsstatus Revives with 1000 HP 1150 HP 1300 HP 1450 HP 1600 HP 1750 HP 1900 HP 2050 HP 2200 HP 2500 HP
Cooldown 9 87

Passive Skills

Mad Enhancement EX (C)
Busterupstatus Increases own Buster performance by 6%.
Divinity C
Powerup Increases own damage by 150.

Noble Phantasm

Curruid Coinchenn
Beast of Crunching Deathtusk
Rank Classification Type Hit-Count
A Anti-Unit Buster 12
Effect Deals damage to one enemy.
NP Level 1 2 3 4 5
Powerup Damage + 600% 800% 900% 950% 1000%
Overcharge Effect Increases own attack for 1 turn. (Activates first)
Increases own defense for 1 turn. (Activates first)
Charge 100% 200% 300% 400% 500%
Attackup Attack + 30% 40% 50% 60% 70%
Defenseup Defense + 30% 40% 50% 60% 70%

クー・フーリン〔オルタ〕 噛み砕く死牙の獣

クー・フーリン〔オルタ〕 噛み砕く死牙の獣


Item 1 Item 2 Item 3 Item 4 QP
1st Berserker piece5 QPicon100,000
2nd Berserker piece12 Unlucky bone22 QPicon300,000
3rd Berserker monument5 Talon of chaos6 Heart of a foreign god2 QPicon1,000,000
4th Berserker monument12 Heart of a foreign god4 Bloodtear8 QPicon3,000,000

Skill Reinforcement

Item 1 Item 2 Item 3 Item 4 QP
1st Shiningberserker5 QPicon200,000
2nd Shiningberserker12 QPicon400,000
3rd Magicberserker5 QPicon1,200,000
4th Magicberserker12 Talon of chaos3 QPicon1,600,000
5th Secretberserker5 Talon of chaos6 QPicon4,000,000
6th Secretberserker12 Unlucky bone15 QPicon5,000,000
7th Unlucky bone29 Snake jewel5 QPicon10,000,000
8th Snake jewel15 Voids refuse48 QPicon12,000,000
9th Crystallized lore1 QPicon20,000,000


Strength: A
Endurance: B+
Agility: A+
Mana: C
Luck: D

Bond Level

Bond Level 1 BoundLevel1 2 BoundLevel2 3 BoundLevel3 4 BoundLevel4 5 BoundLevel5 6 BoundLevel6 7 BoundLevel7 8 BoundLevel8 9 BoundLevel9 10 BoundLevel10
Bond Required 5,000 15,000 10,000 2,000 18,000 150,000 430,000 340,000 320,000 405,000
Total Bond 5,000 20,000 30,000 32,000 50,000 200,000 630,000 970,000 1,290,000 1,695,000
Bond 10 Reward CE 355icon One-Man War
When equipped on Cú Chulainn (Alter),
Increases own NP damage by 30%.
Grants self Guts status for 1 time. (Revives with 20% HP.)
Chaldean Visionary Flames [?]
11 BoundLevel1 12 BoundLevel2 13 BoundLevel3 14 BoundLevel4 15 BoundLevel5
1,090,000 1,230,000 1,360,000 1,500,000 1,640,000
2,785,000 4,015,000 5,375,000 6,875,000 8,515,000


Unlock Description Translation
Default ケルト・アルスター伝説の勇士。


The legendary warrior of the Ulster Cycle of Celtic mythology.

A member of the Red Branch Knights and the strongest fighter of Ulster, he won his fame with his mastery of the invincible spear techniques taught to him by Scáthach, the ruler of the alternate realm called the Land of Shadows.
He has unusually taken form as a Berserker.
Some factor of his summoning also caused all of his equipment to change and reversed his temperament.
His expressions become cold, and the crimson demonic spear that is his Noble Phantasm has been mixed with darkness, overflowing with a foreboding aura.

Bond 1 身長/体重:185cm・72kg

属性:混沌・悪  性別:男性

Height/Weight: 185 cm ・ 72 kg

Source: Celtic Mythology
Region: Ireland
Alignment: Chaotic ・ Evil
Gender: Male
His Rune Magic is used only to strengthen his body.

Bond 2 精霊の狂騒:A


Madness of the Spirits: A

The roar of Cú Chulainn awakens the spirits sleeping within the earth and crushes the will of enemy forces. This mental interference causes a temporary decrease in STR and AGI in all enemies.

Bond 3 クー・フーリンが女王メイヴの願望によって変転した姿。



Cú Chulainn's mutated figure by means of Queen Medb's desire. He wolfs down on the land of America as Mad King Cú Chulainn.

This is not even the mad warrior condition from when alive; he has been summoned as a different figure than a proper Berserker.
When receiving the backup from the Holy Grail, his strength surpasses even when in Lancer or Caster conditions.

Bond 4 『抉り穿つ鏖殺の槍』

ランク:B++ 種別:対軍宝具
レンジ:5~50 最大捕捉:100人

Gouging Piercing Spear of Carnage

Rank: B++
Type: Anti-Army
Range: 5~50
Maximum Targets: 100 people
Gáe Bolg.
Homing magic spear missile.
Cú Chulainn's proper Noble Phantasm.
Because, while an Alter, he performs a full-power thrown while prepared for the collapse of his own body, both power, and effective range has been raised when compared to normal summoning.
There is an instant-death effect towards the entire enemy camp and, even if instant death is avoided, it still gives great damage.
(Because he is throwing while "making the collapsing body regenerate" by means of rune magecraft, Cú Chulainn receives no damage himself-- if you exclude outrageous amount of pain).

Bond 5 『噛み砕く死牙の獣』

ランク:A 種別:対人宝具(自身)
レンジ:─ 最大捕捉:1人
攻撃型骨アーマー。着用することで耐久がランクアップし、筋力パラメーターはEXとなる。 この宝具を発動している最中は『抉り穿つ鏖殺の槍』は使用できない。

Beast of Crunching Deathtusk

Rank: A
Type: Anti-Unit (Self)
Range: -
Maximum Targets: 1 person
Curruid Coinchenn.
The anger of the raging Cú Chulainn temporarily embodies the exoskeleton of Marine Beast Curruid - the monster of the crimson sea that became the basis for the magic spear Gáe Bolg - and clads it over his body like an armor.
Attack-type bone armor. By wearing it, END is Rank UP and STR parameter becomes EX.
While this Noble Phantasm is active, he cannot employ the "Gouging Piercing Spear of Carnage".

Clear Interlude 1
Extra 第五章における災厄クラスのエネミー。


A calamity class enemy from the Fifth Order.

Since it came to this, it would be better to just summon a certain Archer that equipped a mythological Mystic Code as a protagonist and have them fight in a mysterious space from a Sunday morning show, but what do you think?

April Fool   Bad-Type Servant

Since he's covered in thorns, you can just roll him at enemies to damage them, just like a certain hedgehog. Not only that, but the thorns also protect him from ambushes while he sleeps! Pretty clever for a Berserker.


  • He has the highest ATK values out of all Berserkers.
  • He has the 3rd highest ATK values out of all servants.


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