Berserker (バーサーカー, Bāsākā?) is a Berserker-class Servant able to be summoned by the Protagonist in the Grand Orders of Fate/Grand Order.



Berserker's True Name is Ibaraki-douji (茨木童子, Ibaraki-dōji?).

During the Heian period, one of the Oni that appeared on the imperial capital and exhaustively carried out atrocities. Regarded as a subordinate of the Shuten-douji that lived in Mt. Ooe, it has been said that - during the "oni extermination of Mt. Ooe" by Minamoto no Raikou and her Four Heavenly Kings - she crossed swords with Watanabe no Tsuna of the Four Heavenly Kings.

The sole survivor of Mt. Ooe's oni, she attacked Watanabe Tsuna on the Rashoumon (or the Ichijou-modoribashi) at the imperial capital and ended up having her arm cut off. While said arm was temporarily snatched away as a spoil of war, Ibaraki would later retrieve it and disappear to somewhere.[1]

In actual fact, she is not Shuten Douji's subordinate, but it is rather believed that Ibaraki Douji existed as "the ringleader of Mt. Ooe's oni". (Despite being a mighty existence, the extremely pleasure-seeking Shuten had no intentions of commanding the swarm of oni herself)[1]

The one who erected a solemn palace at Mt. Ooe, cherished Shuten Douji as a sworn brother, commanded a group of oni that were each a match for a thousand warriors and exerted tyranny on ancient Kyoto was Ibaraki Douji herself; a "raging oni" that made people fall into the depths of terror.[1]

Due her anecdotes and vestiges, she is classified as a "anti-hero".[1]


In the anecdote of the Rashoumon, she appears in the figure of "a beautiful woman".[1]



Fate/Grand OrderEdit

Rashomon: Devilish Capital of Restless Spirits and Drunken DreamsEdit

Onigashima: Demonic Fairy TaleEdit

Salomon: The Grand Time TempleEdit

She is amongst the "special events" Servants to assist the Chaldea against the Demon Gods Pillars.[2]


Demon of the Oni Kind (鬼種の魔, ?) is a Skill that represents the superpower as well as the demonic nature as an oni. A mixed Skill of Natural Demon, Monstrous Strength, Charisma, Mana Burst and etc; but some adjustment has been applied to its effects in this work. There are many concerned examples in which the form of Prana Burst is "Heat".In Ibaraki's case, it is "Flames".[1]


Left is the character designer for Ibaraki-dōji.[1]


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  2. Fate/Grand Order - Salomon: The Grand Time Temple - Act 09: X / Disposal Chute Andromalius