Cu Alter Render
I don’t really hate my enemies. Simply kill, that’s a knight’s natural course of action.
~ Cú Alter's thoughts on his actions


Berserker is an altered Servant summoned by Medb in E Pluribus Unum, the Fifth Singularity, using the Holy Grail to summon Cú Chulainn in a form perfect for her.

As Cú Chulainn Alter, he has changed greatly, becoming a monstrous Mad King devoted to devouring and destroying the land of America and leaving nothing remaining. It does not even reflect his berserk form in life, instead twisting him into a monstrous form that more reflects the sea monster Curruid, from which Gáe Bolg was carved.

Powers and Stats

Tier: 7-A, higher with Curruid Coinchenn. Likely High 7-A with Gáe Bolg | At least 7-A, at least High 7-A with Gáe Bolg and Curruid Coinchenn

Name: Berserker, Cú Chulainn Alter, the Mad King

Origin: Fate/Grand Order

Age: Unknown

Gender: Male

Classification: Berserker-class Servant

Powers and Abilities: Superhuman Physical Characteristics, Expert Spearman, Rage Power, Rune Magic (Allows for Forcefield Creation, Elemental Manipulation, Healing, and temporary boosts to his Noble Phantasms and parameters), can easily predict the paths of incoming projectiles, Regeneration Negation with Gáe Bolg, Death Inducement with the Gouging Piercing Spear of Carnage, can temporarily fight on even with lethal injuries, Summoning (Can summon fairies and other spirits of the Earth to crush his opponent's fighting spirits), the Gouging Piercing Spear of Carnage homes in on targets, Soul Manipulation (All Servants can consume souls to replenish their magical energy), Intangibility and Invisibility in spirit form, Immunity to conventional weapons, Resistance to Magic (Including effects such as Petrification, Spatial Manipulation, and Mind Manipulation), Regeneration (Mid-Low; normally. At least High-Low with Runes, heals through an instantaneous application of Rune Magic, allowing him to regenerate from having his body breaking apart when using Gouging Piercing Spear of Carnage and from the major injuries received from Karna's heavily weakened Vasavi Shakti).

Attack Potency: Mountain level (Has A-rank strength, comparable to Heracles), higher with Curruid Coinchenn (Ranks his Strength up to EX). Likely Large Mountain level with Gáe Bolg (Gáe Bolg is superior to its normal form as an Anti-Army Noble Phantasm in his hands and should be somewhat comparable to his Grail Boosted version) | At least Mountain level (Easily overpowered and defeated Rama, implied to be superior to Scáthach, who he fears and wishes to avoid without his connection to the Grail, and can fight Chaldea's Servants), at least Large Mountain level with Gáe Bolg and Curruid Coinchenn (Mash wasn't sure if she could block a thrown Gáe Bolg with Lord Chaldeas, and Merlin felt it was necessary to step in. Curruid Coinchenn easily disemboweled and incapacitated Scáthach and should likely be somewhat comparable, increasing Cú's Strength to EX).

Speed: Massively Hypersonic (His A+ rank Agility makes him faster than even his normal self, and superior in speed to Saber).

Lifting Strength: Unknown

Striking Strength: Mountain Class, higher with Curruid Coinchenn | At least Mountain Class, at least Large Mountain Class with Curruid Coinchenn

Durability: Mountain level, higher with Curruid Coinchenn and runic barriers | At least Mountain level, higher with Curruid Coinchenn and runic barriers

Stamina: High. His normal self was able to fight against Gilgamesh for half a day, and his high rank Battle Continuation allows him to keep on fighting when badly injured.

Range: Extended melee range, Tens of Kilometers by throwing Gáe Bolg (His throwing range is even greater than his normal self's, who can throw Gáe Bolg forty kilometers)

Standard Equipment: Gáe Bolg.

Intelligence: Despite being a Berserker, Cú Chulainn Alter has retained most of his reason, allowing him to perform complex techniques and attacks that even Scáthach was unaware of. He is ruthless in combat, mercilessly impaling foes from behind and scouring the land as per Medb's wishes. He is a nihilist by nature, believing everything to be meaningless in the end, making him willing to damage his own body to end a target and seeing his own existence as a mere tool for his Master.

Weaknesses: Using Curruid Coinchenn seals the use of Gáe Bolg.

Notable Attacks / Techniques:

Noble Phantasms

  • Curruid Coinchenn
  • Cú Alter using Curruid Coinchenn
Slaughter. Without exception. Liberate all curses. Without moderation. Be prepared to challenge despair... Curruid Coinchenn!
~ Cú Alter using Curruid Coinchenn

Curruid Coinchenn: Beast of Crunching Deathtusk: Cú Alter's unique Noble Phantasm, which manifests the rest of Curruid's skeleton from his wrath to wear it as armor. It is an offensive armor that raises his Strength to EX-rank and boosts his Endurance as well, but prohibiting the use of Gáe Bolg for as long as he wears it. Its claws also seem to bear Gáe Bolg's legendary effects, skewering his opponent with countless barbs when he wounds them, ripping them apart from the inside out and inhibiting their regeneration.

Gae Bolg Gouging Spear

Gae Bolg: Gouging Spear of Carnage

Gáe Bolg: Gouging Piercing Spear of Carnage: Cú Alter's variant of Gáe Bolg, possessing the same build and basic function as the original. Carved from the remains of the beast Curruid's skull, it inhibits regeneration, making it difficult to heal from wounds it inflicts. Although one can save themselves through external means of healing, the wound will not heal completely until Cú Alter's death or by transferring the curse to another. Cú Alter can release its true name to utilize it as his normal self utilizes the Soaring Spear, hurling the spear with such power that it badly damages his own body while gaining strength and range. Like the Soaring Spear, it homes in on his target and splits into countless spearheads to cause destruction and death on a great scale, inflicting instant death on others. Those who manage to survive this effect through sheer luck are instead skewered from the inside out with countless barbs that pierce all of one's internal organs. The damage to Cú Alter's body is instantly healed with Rune Magic, but it still causes him intense pain.

Class Skills

Mad Enhancement: The source of the Berserker class's power, raising their statistics in exchange for a loss of sanity. Due to the nature of his summoning, Cú Alter has an EX-ranked Mad Enhancement, allowing him to converse normally and think logically despite his class. However, it is impossible for him to hold any meaningful conversation with his opponents. In addition, his true rank of C can show, boosting his statistics at the cost of his pride and self-control.

Personal Skills

Battle Continuation: A skill that reflects one's exceptional vitality and endurance, allowing the user to fight on despite grievous wounds and escape safely even when defeated. Cú Alter is a mad beast that never gives up, fighting on to the very end, even if he is lethally injured, dying only when he receives a final, decisive blow. This is further supplemented by his regenerative capabilities, which make it extremely difficult to inflict any lasting harm.

Divinity: The measure of one's Divine blood, reflected in high ranks by the user becoming part Divine Spirit, though it decreases if the user dislikes the gods. It allows Cú Alter to reduce "purge defense" in proportion to the rank of his Divinity, allowing him to break through defensive abilities such as Achilles' Andreas Amarantos. As the son of the God of Light, Lugh, Cú Alter would normally have a higher rank, but his altered state has ranked it down to C.

Fairies Maddening: Cú Alter can awaken the spirits and fairies hiding within the Earth with a growl that also crushes his opponent's spirits.

Protection from Arrows: A skill that provides increased defense against ranged attacks through the prediction of the projectiles' trajectories, whether through hearing the air being cut or sensing an enemy's killing intent. As long as the shooter is within Cú Alter's line of sight, he can track down their projectiles and defend against them easily, but it offers no protection against extremely long range attacks or those with a great area-of-effect. Because of his Mad Enhancement, this skill is ranked down, so he cannot track projectiles enhanced by magecraft and has to follow them with his eyes.

Rune Magic: A skill that measures one's knowledge of this type of Northern European Magecraft. Like his normal self, Cú Alter has mastered the original eighteen Norse Runes, which would give him A-Rank proficiency as Caster, but is downgraded to B-Rank proficiency in this distorted, altered state. With it he is able to achieve a variety of effects such as setting up runic barriers, duplicating the Magic Resistance skill through runic defenses, and instantaneously healing himself whenever he is damaged.

Key: Base | E Pluribus Unum


Notable Victories:

Notable Losses:

Inconclusive Matches:

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