Tier Lists

Summon Tools

Summon Banner List

Summon Simulator (NA)

Summon Simulator (JP)

Database

Servant Reviews

Rabbit's Reviews Archive Rathilal's MMM Archive

Fate/Grand Order Wiki - GamePress

535

Collections

Cu Chulainn (Prototype)

ListEntry

Table of Contents

Total Materials Required

Lancer

Attribute

Heaven

Alignments

Lawful Balanced

NP Gain

1.08%

NP when Attacked (%)

Star Absorption

88%

Star Generation per Hit

12.1%

Instant Death Chance

28%

Attack

Base1,315

Max7,082

Lv 1009,584

Lv 12011,257

Base1,817

Max10,098

Lv 10013,691

Lv 12016,093

Traits

Skills

Rune Spell B

Increase own Critical Strength (3 turns). Increase own Debuff Resist (3 turns).

Available from the start

Protection from Arrows B

Apply Evade to self (3 times). Increase own DEF (3 turns).

Unlocks after 1st Ascension

Beast-Slayer B+

Apply Special ATK [Wild Beast] to self (3 turns).

Unlocks after 3rd Ascension

Beast-Slayer B++

Apply Special ATK [Wild Beast] to self (3 turns). Increase own Critical Star Gather Rate (3 turns).

Upgrades after Rank Up Quest

Append Skills

Extra Attack Boost

Increase own Extra Attack Card effectiveness.

Load Magical Energy

Begin battle with NP Gauge charged.

Anti-Caster (ATK Up)

Deal extra Special ATK damage to [Caster] class enemies.

Special Attack Technique Improvement

Increase own Critical Strength.

Skill Reload

When using a skill, reduce the cooldown for the skill by 1 turn for the first time the skill is used per battle (Only 1 time per skill). Lv 1-5: 1 skill Lv 6-9: 2 skills Lv10: 3 skills

Class Skills

Magic Resistance C

Increase your Debuff Resist by 15%.

Divinity B

Apply Damage Plus for yourself (Total Card Damage +175).

Noble Phantasm

Gae Bolg (Prototype)B

Deal significant damage to a single enemy.

Decrease DEF for a single enemy (3 turns). Medium chance to inflict Death.

Gae Bolg (Prototype) (Upgrade 1)B+

Upgrades after Rank Up 2. (Available 7/6/2023)

Increase own Quick Card effectiveness by 20% (1 turn) [Activates first]. ▲ Deal DEF-ignoring damage to a single enemy. ▲

Decrease DEF for a single enemy (3 turns). Medium chance to inflict Death.

Stage	Cost	Materials
2	30,000	4
3	100,000	8 10
4	300,000	4 8 2
Max	900,000	8 4 8

Level	Cost	Materials
1 → 2	50,000	4
2 → 3	100,000	8
3 → 4	300,000	4
4 → 5	400,000	8 4
5 → 6	1,000,000	4 8
6 → 7	1,250,000	8 7
7 → 8	2,500,000	13 12
8 → 9	3,000,000	36 16
9 → 10	5,000,000	1

Level	Cost	Materials
1 → 2	50,000	4
2 → 3	100,000	8
3 → 4	300,000	4
4 → 5	400,000	8 2
5 → 6	1,000,000	4 4
6 → 7	1,250,000	8 2
7 → 8	2,500,000	4 2
8 → 9	3,000,000	5 10
9 → 10	5,000,000	1

Costume	Cost	Materials
April Fool's Cu Chulainn (Prototype)

Total Materials Required

Ascension	12 10 12 8 6 8 x1,330,000
Skill	12 12 12 12 20 48 16 1 x13,600,000
Append Skill	12 12 6 12 6 7 10 1 x13,600,000
Ascension + Skill	12 30 12 20 6 24 12 12 12 48 1 x14,930,000
Total	12 30 12 20 6 24 24 24 24 48 2 6 6 7 10 x28,530,000

Analysis

Proto Cu is, in essential, a much more offensive version of normal Cu Chulainn. Trading Battle Continuation and Disengage for the ability to do critical damage reliably and increased damage against Beast type enemies allow him to serve as a great budget damage dealing Lancer. Beast-trait is a quite common trait amongst frequently appeared enemies, such as Chimera, meaning Proto Cu will prove quite useful for these type of enemies and will only become more valuable as the game goes on. And while he does not have Guts, Proto Cu is still extremely tanky thanks to Protection from Arrows and is more than adequate for him to find a place in tough challenges.
Proto Cu however is not without flaws, as he has a somewhat awkward deck of BBQQA which hampers his NP generation rate while does not really contribute much to his Star generation rate either. He also does not contribute much to the team in term of buffs or debuffs, and while he is a good Servant independently, he needs heavy support to reach his full potential.

🟢 Strengths

	Hard to kill thanks to having Protection from Arrows
	Great damage potential for a 3 Star Servants thanks to possessing both a Critical Damage increase and Star Absorbtion buff
	Is a great choice when battling enemies with Beast trait (a quite common trait that's often found in events/daily maps)

🔴 Weaknesses

	Awkward card deck for NP generation combined with fairly normal NP generation rate means he often need support to get to 100% NP bar
	Lack of Attacks or Card Performance boost to improve his NP damage output and often rely on Critical Hits to deal meaningful damage, making him more dependent on team support
	Mediocre Star generation capability despite having a light Quick deck due to low hit count on his cards

Level Up Skill Recommendations

Low

Rune Spell B

Increase own Critical Strength (3 turns). Increase own Debuff Resist (3 turns).

High

Protection from Arrows B

Apply Evade to self (3 times). Increase own DEF (3 turns).

Med

Beast-Slayer B+

Apply Special ATK [Wild Beast] to self (3 turns).

Divine Protection from Arrows is the claim to fame for both Cu Chulainn and it is what gives them incredible tankiness for hard battles. Thus, you'd do a disservice not leveling it first. Afterward, Beast Slayer is better than Rune Spell as it gives Cu Chulainn Prototype a unique niche against certain enemies. Furthermore, in the long run, it is also a great offensive skill after the Rank Up due to the crit stars absorption. Rune Spell is his least important skill, not because it is bad, but because it isn't particularly good on him until he receives his crit star absorption component on his 3rd skill, so it should be leveled last.

🖼️ Craft Essence Recommendations

Gem Magecraft: Antumbra

Knight's Dignity

Being a strong survivalist and critical damage dealer (once he gets his Rank Up quest), Cu Chulainn Proto appreciate any form of Quick card performance boost as well as a critical damage boost.
Knights of Marines / One Summer / Chaldea Anniversary - These are mixed Starting NP Gauge / Quick Damage Up CEs that allow him to start battle closer to being able to unleash his NP, while also providing a small offensive boost.
Imaginary Around / Gandr - the basic Quick card booster CEs are perfect for him as he has a light Quick deck (BBQQA) 
Guda-O / Holy Night Sign: Craft Essences that give him two out of several stats that he want
Water Shine / Gem Magecraft: Antumbra / Knight's Dignity: For team that make Cu Proto the main Critical Damage Dealer, these provide boosts to his critical performance

Analysis by:

Interlude Quests

Quest	Requirements	Reward
✔Cu Chulainn (Prototype) Interlude: To the Nameless Battlefield Chapter Completion:Fuyuki	Ascension:1 Bond:2
✔Part V Rank Up Quest: Cu Chulainn (Prototype) Chapter Completion:Chaldea Gate	Ascension:4 Bond:0
✔Part XIV Rank Up Quest: Cu Chulainn (Prototype) 2 Chapter Completion:Fuyuki	Ascension:4 Bond:0

Additional Info

Cost	7
Growth	S
Instant Death Chance	28
Damage Distribution Quick	33,67
Damage Distribution Arts	33,67
Damage Distribution Buster	100
Damage Distribution Extra	12,25,63
Damage Distribution NP	100

Bond

Bond Lv	1	2	3	4	5	6	7	8	9	10
Bond EXP	2,000	3,000	4,000	5,000	6,000	190,000	208,000	252,000	310,000	360,000

Hound of Culann

When equipped to Cu Chulainn (Prototype) only, All allies will inflict 20% bonus damage against [Wild Beast] enemies while on the field.

Profile

Illustrator	Nakahara
Seiyuu (CV)	Kazuya Nakai
AKA/Alias/Nicknames	Setanta, Proto Cu, Proto Lancer
Country/Place of Origin	Ireland
Series	Fate/Prototype
Release Date (NA)	Game Launch

Parameters

STR

END

AGL

A+

LUK

Valentine's CE

Remnant from 1999

Profile Entries

Character Info

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 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...

Profile 6

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.

Voice Lines

Battle Start 1	Well, guess I should get started.
Battle Start 2	Should I finish this up quick?
Skill 1	Haha!
Skill 2	Ready to go?
Command Card 1	Yeah!
Command Card 2	Hmmm.
Command Card 3	Leave it to me.
Noble Phantasm Card	Well, should I get this party started?
Attack 1	Hiyah!
Attack 2	Hyah!
Attack 3	Take that!
Extra Attack	Eat this!
Noble Phantasm	Pierce them! Gut them! Finish them! ...Gáe Bolg!
Damage 1	Oomph!
Damage 2	Urgk!
Incapacitated 1	My spear isn't working. My spear...
Incapacitated 2	Man, today is not my day...
Victory 1	...What a boring opponent. You're killing my motivation.
Victory 2	Pretty good, huh?
Level up	Now we're goin'.
Ascension 1	Nice, this feels good!
Ascension 2	I feel like I'm getting used to this body...
Ascension 3	I'll show you the skill of Ulster!
Ascension 4	Perfect. I've got no complaints... You've come a long way. Who woulda thought?
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 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.
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 (Fergus mac Roich)	My uncle Fergus used to say that a woman's body... Actually, never mind.
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?
During an Event	Looks like an interesting festival has started. Might as well join in.
Birthday	Congrats. Today's your birthday, right?
Summon	I am Cú Chulainn from Ulster, a Lancer-class Servant. Nice to meet you!