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.
Cu Chulainn's mutated figure by means of Queen Medb's desire. He wolfs down on the land of America as Mad King Cu 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.
Rank: B++ Type: Anti-Army Range: 5~50 Maximum Targets: 100 people
Homing magic spear missile.
Cu 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 have 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, Cu Chulainn receives no damage himself-- if you exclude outrageous amount of pain).
Rank: A Type: Anti-Unit (Self) Range: - Maximum Targets: 1 person
The anger of the raging Cu Chulainn temporarily embodies the exoskeleton of Marine Beast Curruid - the monster of the crimson sea that became the basis for the magic spear Gae 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".
Since it came to this, I believe 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?