Rider (ライダー, Raidā?) is a Rider-class Servant able to be summoned by Ritsuka Fujimaru in the Grand Orders of Fate/Grand Order.



Rider's True Name is Queen Medb (メイヴ, Meivu?). The Eternal Lady. The queen of Connacht that appears in Celtic Mythology, the Ulster Cycle.[2] Properly married to Ailill mac Máta, she is a part of a long line of queens ruling the country.[3] A young girl of affairs who built engagements, marriages and, at times, nothing but carnal relations with many kings and brave warriors. The ringleader who caused the greatest war of the Ulster Cycle, she aimed at the life of the brave warrior of Ulster that defied her - Cú Chulainn.[2] It is said that she is endowed with the aspect of discord and conflict, as a Divine Spirit that rules over insanity, evil and royal authority.[1]


After Fergus mac Róich left Ulster due to the king having his two sons killed "out of lust for young women", he defected to Connacht out of hatred for the king. Becoming one of Medb's lovers, his influence in his desire to obtain revenge, Medb's own love of treasure, and the known curse upon Ulster causing all born there to become feeble when invaded caused Medb to start a great war, commanding the soldiers of Connacht while driving her chariot.[2][3][4]

Cú Chulainn, not born of Ulster, was the only one able to fight, so he spent his days slaughtering her soldiers until they proposed that the war be held with one-on-one duels. Due to that she was losing five thousand men per day, Medb reluctantly agreed to the terms, only advancing her army during the duels at the cost of only a single soldier per day. Medb ignored the treaty and still advanced, but only in unnoticeably small amounts due to having taken a public vow. Cú Chulainn fought through many hard battles against her, requiring even a group of untrained soldiers to sacrifice themselves to save him as he became more exhausted. Medb eventually schemed to have Cú Chulainn fight his close friend Ferdiad, who reluctantly served his lord even if it meant fighting his closest friend. The end of the battle resulted in Ferdiad's death and Connacht's defeat, followed by further defeat as the warriors of Ulster chased after Medb's retreating army. Cú Chulainn eventually captured her, but he treated her as royalty and returned her to Connacht without killing or shaming her.[3]

At some point during this period, Medb attempted to make Cú Chulainn her own, but he held no interest in her.[2] Waging war against Ulster for a second time with the motive of revenge against Cú Chulainn, she concluded that "Fergus' existence will become a bother", not inviting him to the battlefield, and he was later killed by her jealous husband.[4] She returned after gathering many warriors with grudges against Cú Chulainn, cornering him through the use of various means. He was forced to fight her army by himself, and he died after being entrapped by the various plots of Medb.[3]

Even in modern Ireland, there are many witness reports that say "I saw her". Of course, those are by no means jokes. Even now, Queen Medb lives in the hearts of people as the Eternal Lady.[2]

Rather humorously, while she doesn't mind being called by carnal-related title, she is incredibly offended if someone points out that she has "no luck with men".[5]


Medb possesses a goddess-like, perfect body since birth.[2]


« I don't hate being antagonized.
However, I cannot tolerate the fact that, among the men of Ulster, there is one man - and one alone - who did not become mine even though I thought "I want him". Even though I called out to him, tempted him. That attitude in which, let alone be swayed, simply said "what the heck are you doing?"
I won't forgive him. Won't forgive, won't forgive, won't forgive, won't forgive, won't forgive! Absolutely, not him!
Cú Chulainn of Ulster!
By the name Medb, the lover and ruler of all men, I swear! I'll surely make you succumb to me! »


A pure maiden who is neat and clean. Simultaneously, an unscrupulous maiden who is a slut.[1] Pure and tidy. Lewd and devious. Both are her true faces, and it's not like either of them are a lie. It is just that the "impression" many people catch is the former. Medb just earnestly, tidily enjoys lewdness, and purely performs deviousness. She loves good men. She really loves strong men![2] She'll love a man even more if he is one who will not yield to her! For her, it will be worth the torment![1] Not going against her own desires at all, she made many men her own while alive. The owner of the magic sword Caladbolg, Fergus, was one of her lovers. She also really loves treasures, and for that reason, she triggered a great war with the entirety of Ulster as her opponent and commanded the Connacht troops while driving her own chariot.[2] Cú Chulainn describes her as a "warmongering lady" who hated having to back down.[3]

« The main character of the world’s stage, dominator of all things, that is I — Medb.
I am Medb, Queen of Connacht.
It doesn’t matter whether you’re a lover, comrade, child, or king: you all belong to me.
Everyone will be attracted to me. You will love me — and then I shall take you away.
To love is to love. I will never stop loving. To take is to take. I will never stop plundering. You cannot resist. You’ll want to be dominated by me.
Cast your wishes, not to the Holy Grail, but to my sacred spring. If you’re on a whim — maybe, something good will happen? »


Because Medb thinks she is the center of the world, she will come along to a large event even on an occasion where she is not invited. "After all, does it not seem pitiful to not notice these things, even though I spent money for things like these? Nevertheless, do be at peace, for I am coming now! The center of the world, the chosen leading actress, this Queen Medb, the ruler of everything!" Even if it is an action according to a person who craves the limelight, the person herself is uncontrollable when considering and concerning everybody else in the vicinity.[1]

Medb recognizes the Master as a "temporary master". However, she openly perceives the system called "Master and Servant" as some kind of play, and takes into consideration of it not very seriously. She herself relatively enjoys the state of affairs around herself.[1]

Holding a great hatred for the only one who spurred her advances, Cú Chulainn, Medb sought out his death upon his rejection. Although her fixation regarding Cú Chulainn still remains, her wish for the Holy Grail is unrelated to him. That is, "to make all superb men of past/present/future into my lovers." If possible, a brave warrior who is generous, won't get jealous, and knows no fear. If the Master is a brave man who measures up to her, it is probable that Medb will lavishly slap her love onto him with all of her energies, without minding public attention. Sternly, relentlessly, just like the whip she holds.[2]


Cú Chulainn
As has been said before, Cu-chan LOVE. When he became Alter, even more LOVE.[1]
"That the dreamy Ulster hero would fall madly in love with me like this, isn't it proof of my beauty and charm?"[1]
Male Servants that she likes
"Everyone wants to be my lover. My favourite type of guy is one who is generous, won't get jealous, and knows no fear."[1]
"Guys who get jealous are a no. Also, even my instinct says no."[1]


Fate/Grand OrderEdit

E Pluribus Unum: Grand Battle of Legends in North AmericaEdit

Medb is the main antagonist of the "E Pluribus Unum" Singularity, possessing the Holy Grail of the Singularity. She commands the army of Celts and uses the Holy Grail to summon multiple Servants to aid her, including Cú Chulainn Alter, Arjuna, Fergus mac Róich, Fionn mac Cumhaill, Diarmuid Ua Duibhne, and Beowulf. Her forces invade America, and had conquered half of Eastern America, where Medb had killed George Washington and exterminated a plurality of the nation's leaders. Medb's army later clashes against the American robot forces of Thomas Edison and the Resistance force that opposes both factions.

At one point, the Resistance members Geronimo, Robin Hood, Nero and Billy the Kid attempt to assassinate Medb, sneaking up on her with Robin's No Face May King and isolating her with Nero's Aestus Domus Aurea. However, both Cú Chulainn Alter and Arjuna protect Medb, fighting on her behalf. The Resistance Servants are defeated by them, with the exception of Robin, who manages to escape. Before dying, however, Geronimo predicts that Medb will die soon, causing her to finish him off herself.

The United American and Resistance Armies eventually attack Washington, the base of the Celts. The Protagonist's party are able to break through the Celt forces and Servants, facing Medb and Cú Chulainn Alter. They manage to defeat her, but before she fades away, she uses the Holy Grail to summon the Demon Gods, Clan Calatin.

Salomon: The Grand Time TempleEdit

Medb is amongst the "E Pluribus Unum" Singularity Servants to aid Chaldea against the Demon Gods Pillars.[6]

A Magical Girl's Travelogue ~Prisma Causeway~Edit

Death Jail Summer Escape ~Medb's Great Bastille of Guilt and Despair~Edit


Serva★Fes 2018 : Servant Summer Festival!Edit


Other appearancesEdit

Medb is mentioned within Lancer's flashback in Fate/hollow ataraxia.[3]


Medb has been referred to as the mother of many soldiers, but it is not like she actually gives birth to those soldiers. After taking in the genetic informations of warriors, she reproduces those inside her body. By wounding the tip of her index finger with a blade and having that blood fall on the ground, what was no more than a single drop becomes a great puddle of blood and soldiers are "manufactured" along with the blood foam. Medb is literally the "queen" and ruler of nameless soldiers.[2]

Medb's Noble Phantasms are a chariot with two bulls, Chariot My Love, her golden liquor honey infused with her legend of charm, My Red Mead, the ability of future vision possessed by Ulster King Conchobar, Conchobar My Love, and the magic sword Caladbolg possessed by Fergus via Fergus My Love.[1]

Forms and Alternate VersionsEdit



Creation and CreationEdit

Kisai Takayama is the character illustrator for Medb.[2][1] Hikaru Sakurai is the scenario writer for her character.[1]


  1. 1.00 1.01 1.02 1.03 1.04 1.05 1.06 1.07 1.08 1.09 1.10 1.11 1.12 1.13 1.14 1.15 1.16 1.17 1.18 1.19 1.20 1.21 1.22 1.23 1.24 1.25 1.26 1.27 1.28 1.29 1.30 1.31 1.32 1.33 1.34 1.35 1.36 Fate/Grand Order material III - Medb, p.234-243, translated by crow_claw at Reddit.
  2. 2.00 2.01 2.02 2.03 2.04 2.05 2.06 2.07 2.08 2.09 2.10 2.11 2.12 2.13 2.14 2.15 2.16 2.17 2.18 2.19 2.20 2.21 2.22 2.23 2.24 2.25 2.26 2.27 2.28 2.29 2.30
  3. 3.0 3.1 3.2 3.3 3.4 3.5 Fate/hollow ataraxia - The past is already
  4. 4.0 4.1
  5. Passionlip: Medb is a beauty but has no luck with guys.
  6. Fate/Grand Order - Salomon: The Grand Time Temple - Act 06: V / Arsenal Halphas
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