

Introduction
Cú Chulainn (Prototype) is a 3-star servant in Fate/Grand Order with the Sky attribute. Cú Chulainn (Prototype)'s class is Lancer.
On the combined Fate/Grand Order tier list Cú Chulainn (Prototype) is C tier, 266th of the 363 servants ranked, from where 3 community tier lists put Cú Chulainn (Prototype).
Other servants in Fate/Grand Order with the Sky attribute: Altria Pendragon (Lancer), Altria Pendragon (Lancer Alter), Altria Pendragon (Ruler), Amor (Caren), Arjuna, Arjuna (Alter) and 63 more.
Profile
Cú Chulainn (Prototype) is voiced by Kazuya Nakai in Japanese. Nakahara drew him.
Stories
7Character details
In Celtic mythology and the Ulster Cycle, there is a great hero who stands above all.
A "Child of Light" born of the blood of the Sun God, Lugh.
Also known as the Guard-Dog, he seems to be the same individual as the Lancer that is summoned with the same True Name.
However, his body and mental age seem to be a bit younger than "the other one."
Profile 1
Height/Weight: 184cm, 71kg
Origin: Celtic Mythology
Region: Europe
Alignment: Lawful-Balanced
Sub-Attribute: Heaven
Gender: Male
Can use Rune spells just like "the other one."
Profile 2
He's a wild but cool kind of guy.
Even though he won't judge between justice or evil and decide which one is better, he cares deeply about being just in the world.
But he isn't mature enough to accept the many unfairnesses that occur in the world.
He's a creature tamer, and has a great affinity for dogs.
Profile 3
Compared to the Lancer summoned with the same True Name, he wears heavy armor.
Despite this, his dexterity parameter is A+, surpassing "the other one."
It's not that he's more capable, but that he's younger, and overenthusiastic which causes several differences between them.
Profile 4
『Gáe Bolg』
Rank: B/B+
NP Type: Anti-Personnel/Army
The Spear which Reverses Causality.
The scarlet spear and related arts which he
received from his mentor, Scáthach.
Capable of Anti-Personnel Thrusts and Anti-Army Throws.
Profile 5
Compared to the other Lancer, he has a bit more affection for his teacher, Scáthach.
It's unknown whether this is due to his age or how much time has passed.
It's true he cannot accept the unfairness of the world, and the fact that it's all shades of gray, but...
Additional profile
He probably thinks it's commendable that his Master is attempting to correct human history, and most likely wouldn't mind lending a hand.
However, you must be careful, as he may not respond the same as the Lancer with the same True Name.
Stats
- HP343rd of 41910,098
- ATK362nd of 4197,082
- Star generation97th of 41912.1%
- Star absorption284th of 41988
- Death rate123rd of 41928%
- NP gain per hit25th of 4191.08%
- NP gain when hit4%
At level 70. 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 70 is the natural cap for a 3-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
- 3 (12/25/63%)
- Quick hits
- 2 (33/67%)
- Buster hits
- 1 (100%)
- Star generation
- 12.1%
- Star absorption
- 88
- Death rate
- 28%
- Party cost
- 7
- NP gain per hit (Arts / Quick / Buster / Extra)
- 1.08% / 1.08% / 1.08% / 1.08%
- NP gain when hit
- 4%
Skills
3
Rune Spell B
Skill 1LevelIncrease Critical Strength (3 turns) & Debuff Resist (3 turns) for yourself
- Critical Up (self, 3 turns)
- 45%
- Debuff Resist Up (self, 3 turns)
- 45%
- Cooldown
- 5 turns

Protection from Arrows B
Skill 2LevelApply Evade (3 times) & increase DEF (3 turns) for yourself
- DEF Up (self, 3 turns)
- 16%
- Cooldown
- 5 turns

Beast-Slayer B++
Skill 3 (strengthened)LevelApply Special Attack [Wild Beast] (3 turns) & increase C. Star Gather Rate (3 turns) for yourself
- STR Up vs. Wild Beasts (self, 3 turns)
- 100%
- C. Star Gather Up (self, 3 turns)
- 500%
- Critical Rate Up (self, 3 turns)
- 15%
- Cooldown
- 5 turns
Before the strengthening quests (1)

Beast-Slayer B+
Skill 3LevelApply Special Attack [Wild Beast] (3 turns) for yourself
- STR Up vs. Wild Beasts (self, 3 turns)
- 60%
- Cooldown
- 5 turns
Noble Phantasm
Gáe Bolg
Rank B+ · Anti-Personnel · 1 hit · strengthenedIncrease Quick Card effectiveness (1 turn) for yourself + Deal significant DEF-ignoring damage & decrease DEF (3 turns) <effect increases with Overcharge> & medium chance to inflict Death <chance increases with Overcharge> to a single enemy
- Quick Up (self, 1 turn)
- 20%
- Damage (ignores defense) (one enemy)
- 2400%
- DEF Down (one enemy, 3 turns, by Overcharge)
- 10%
- Death (one enemy)
- 50%
Before the strengthening quest
Gáe Bolg
Rank B · Anti-Personnel · 1 hitDeal significant damage & decrease DEF (3 turns) <effect increases with Overcharge> & medium chance to inflict Death <chance increases with Overcharge> to a single enemy
- Damage (one enemy)
- 2000%
- DEF Down (one enemy, 3 turns, by Overcharge)
- 10%
- Death (one enemy)
- 50%
Class and append skills
Slightly increase your Debuff Resist
- Debuff Resist Up
- 15%
Apply Damage Plus for yourself
- ATK Plus
- 175
Increase Extra Attack Card's effectiveness by 50% for yourself
Begin battle with NP charged at 20% for yourself
Increase ATK against [Caster] 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:
Lancer Piece x4QP: 30,000 QP - Ascension 2Materials:
Lancer Piece x8
Void's Dust x10QP: 100,000 QP - Ascension 3Materials:
Lancer Monument x4
Seed of Yggdrasil x8
Claw of Chaos x2QP: 300,000 QP - Ascension 4Materials:
Lancer Monument x8
Claw of Chaos x4
Octuplet Crystals x8QP: 900,000 QP
1,330,000 QP for all four ascensions.
Skill enhancement (one skill)
- Level 1 to 2Materials:
Gem of Lancer x4QP: 50,000 QP - Level 2 to 3Materials:
Gem of Lancer x8QP: 100,000 QP - Level 3 to 4Materials:
Magic Gem of Lancer x4QP: 300,000 QP - Level 4 to 5Materials:
Magic Gem of Lancer x8
Seed of Yggdrasil x4QP: 400,000 QP - Level 5 to 6Materials:
Secret Gem of Lancer x4
Seed of Yggdrasil x8QP: 1,000,000 QP - Level 6 to 7Materials:
Secret Gem of Lancer x8
Void's Dust x7QP: 1,250,000 QP - Level 7 to 8Materials:
Void's Dust x13
Proof of Hero x12QP: 2,500,000 QP - Level 8 to 9Materials:
Proof of Hero x36
Octuplet Crystals x16QP: 3,000,000 QP - Level 9 to 10Materials:
Crystallized Lore x1QP: 5,000,000 QP
13,600,000 QP to take one skill from 1 to 10, 40,800,000 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 Lancer x4QP: 50,000 QP - Level 2 to 3Materials:
Gem of Lancer x8QP: 100,000 QP - Level 3 to 4Materials:
Magic Gem of Lancer x4QP: 300,000 QP - Level 4 to 5Materials:
Magic Gem of Lancer x8
Black Beast Grease x2QP: 400,000 QP - Level 5 to 6Materials:
Secret Gem of Lancer x4
Black Beast Grease x4QP: 1,000,000 QP - Level 6 to 7Materials:
Secret Gem of Lancer x8
Primordial Lanugo x2QP: 1,250,000 QP - Level 7 to 8Materials:
Primordial Lanugo x4
Cursed Beast Gallstone x2QP: 2,500,000 QP - Level 8 to 9Materials:
Cursed Beast Gallstone x5
Reactor Core of Dawn x10QP: 3,000,000 QP - Level 9 to 10Materials:
Crystallized Lore x1QP: 5,000,000 QP
Palingenesis (Holy Grails)
- 1Level cap: 75QP: 2,000,000 QP
- 2Level cap: 80QP: 3,000,000 QP
- 3Level cap: 85QP: 4,000,000 QP
- 4Level cap: 90QP: 5,000,000 QP
- 5Level cap: 92QP: 6,000,000 QP
- 6Level cap: 94QP: 7,000,000 QP
- 7Level cap: 96QP: 8,000,000 QP
- 8Level cap: 98QP: 9,000,000 QP
- 9Level cap: 100QP: 10,000,000 QP
- 10Level cap: 102QP: 10,000,000 QP
- 11Level cap: 104QP: 10,000,000 QP
- 12Level cap: 106QP: 10,000,000 QP
- 13Level cap: 108QP: 10,000,000 QP
- 14Level cap: 110QP: 10,000,000 QP
- 15Level cap: 112QP: 10,000,000 QP
- 16Level cap: 114QP: 10,000,000 QP
- 17Level cap: 116QP: 10,000,000 QP
- 18Level cap: 118QP: 10,000,000 QP
- 19Level cap: 120QP: 0 QP
Each summon of this servant gives 15 Servant Coins.
Bond
- 5,000Bond 2: 9,000Bond 3: 14,000Bond 4: 20,000Bond 5: 210,000Bond 6: 418,000Bond 7: 670,000Bond 8: 980,000Bond 9: 1,340,000Bond 10: 2,430,000
Total bond points to reach each level.

Apply 20% Special Attack [Wild Beasts] for all allies only if Cú Chulainn (Prototype) (Lancer) is equipped with this Craft Essence when he is on the field.
Voice lines
71Home (17)
- Birthday
- Congrats. Today's your birthday, right?
- During an Event
- Looks like an interesting festival has started. Might as well join in.
- Conversation 1
- How long are we going to be here? Let's get out there and save the world.
- Conversation 2
- So you're my Master, huh? Show me you know how to handle me.
- Conversation 3
- I got along fairly well with King Conchobar. I hope I get on well with you too.
- Likes
- Do you have a favorite animal? I like dogs, myself. Especially hunting dogs.
- Dislikes
- There's not much I hate. I've got nothin' but bad luck when it comes to women, though. But that's just part of a beautiful woman's charms. Nothing better than a little danger, am I right?
- About the Holy Grail
- Have you heard of Dagda's Cauldron? I feel like it's the original Holy Grail. What do you think?
- Bond Level 1
- Something tells me we're gonna get along just fine. ...Well, be sure you make the most use of me as you can.
- Bond Level 2
- There's another Cú Chulainn? Well, I can't say I'm surprised. I mean, humans and Heroic Spirits are different in all kinds of ways.
- Bond Level 3
- You won't necessarily summon the same Heroic Spirit of the "same hero" every time. What? You can change to me any time.
- Bond Level 4
- Take humans, for example. Even they can turn into different people over time, you know? The changes can be pretty dramatic even if only a little time has passed. I wish I had realized that sooner.
- Bond Level 5
- You know, you kinda remind me of Scáthach. No reason, really. You don't look like her, but... Yeah, it's not the first time you've reminded me of her.
- Conversation 4
- ...The woman who was my Master before, she... Never mind, forget I said anything.
- Conversation 5
- I'm Culann's hound. I'll sink my fangs in and kill. My enemies, that is.
- Conversation 6
- My spear, I can only use the "real thing" when I unleash its True Name... Tch.
- Conversation 7
- My uncle Fergus used to say that a woman's body... Actually, never mind.
Growth (5)
- Level up
- Now we're goin'.
- Ascension 2
- I feel like I'm getting used to this body...
- Ascension 1
- Nice, this feels good!
- Ascension 3
- I'll show you the skill of Ulster!
- Ascension 4
- Perfect. I've got no complaints... [delay 4.2]You've come a long way. Who woulda thought?
First summon (1)
- Summon
- I am Cú Chulainn from Ulster, a Lancer-class Servant. Nice to meet you!
Event (45)
- Battle Start 1
- Well, guess I should get started.
- Battle Start 2
- Should I finish this up quick?
- Battle Start 3
- ...Let's go.
- Battle Start 4
- Give up.
- Skill 1
- Haha!
- Skill 2
- Ready to go?
- Skill 3
- Phew...
- Skill 4
- It's useful, after all.
- Skill 5
- I'll take you down.
- Skill 6
- Hah!
- Command Card 1
- Yeah!
- Command Card 2
- Hmmm.
- Command Card 3
- Leave it to me.
- Noble Phantasm Card 1
- Well, should I get this party started?
- Noble Phantasm Card 2
- Huh. About time.
- Noble Phantasm Card 3
- ...I accept.
- Attack 1
- Hiyah!
- Attack 2
- Hyah!
- Attack 3
- Take that!
- Attack 4
- Ready, go!
- Attack 5
- Hmph!
- Attack 6
- Grah!
- Attack 7
- Oomph!
- Attack 8
- Raaah!
- Attack 9
- Ready, go!
- Attack 10
- Hmph! Hah!
- Attack 11
- Yaaah!
- Attack 12
- Hmph! Rah!
- Attack 13
- Eat this!
- Attack 14
- Hah hah!
- Extra Attack 1
- Eat this!
- Extra Attack 2
- You won't get away!
- Extra Attack 3
- Hrrrah!
- Damage 1
- Oomph!
- Damage 2
- Urgk!
- Damage 3
- What!?
- Damage 4
- Tch!
- Incapacitated 1
- My spear isn't working. My spear...
- Incapacitated 2
- Man, today is not my day...
- Incapacitated 3
- Tch, I screwed up...
- Incapacitated 4
- I'm bowing out first...
- Victory 1
- ...What a boring opponent. You're killing my motivation.
- Victory 2
- Pretty good, huh?
- Victory 3
- On to the next one.
- Victory 4
- Later.
My Room (3)
- Noble Phantasm 1
- Pierce them! Gut them! Finish them! [id 300700_0_B051]...Gáe Bolg!
- Noble Phantasm 2
- This settles it! [id 300700_0_B801]Gáe Bolg!
- Noble Phantasm 3
- Your luck ran out! [id 300700_0_B811]See ya.
Voiced by Kazuya Nakai. Illustrated by Nakahara.
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