Ruler (ルーラー, Rūrā?) is a Ruler-class Servant able to be summoned by the Protagonist in the Grand Orders of Fate/Grand Order. Prior to forming the contract with the Protagonist, he was a Caster-class Servant without a Master.



Ruler's True Name is Sherlock Holmes (シャーロック・ホームズ, Shārokku Hōmuzu?), the world's greatest, most famous and sole consulting detective, the genuine father of all detectives. The crystallization of the concept of detectives, the representative of "the Revealers". The protagonist of the stories written by Sir Arthur Conan Doyle in the 19th~20th centuries, and the detective that solved every mystery, and in the many mystery novels written after, he is one of the progenitors of "Detectives". Or so it is said. But is that really the truth?[1]

Sir Arthur Conan Doyle's novels were the memoirs of his companion and assistant, Dr. John Watson.[2] Holmes works as a consulting detective in London and is famously based in a flat at 221B Baker Street. He has handled many requests, and has definitely gotten a fair share of serious cases from the London Metropolitan Police Department (Scotland Yard), some of which even involved the English government. He has a doctorates in medicine, economics and law and is a member of the Royal Society, and he is especially well-versed in pharmacy.[3]

Holmes and Watson were investigating the death of Henry Jekyll. Holmes received a letter prior from his death, the letter explaining about his failed experiment and his Hyde persona. Holmes was convinced that the Clock Tower was involved with "The Incident of Jack the Ripper".[3]

The Heroic Spirit Holmes, who resembles the men he was modeled after, such as Joseph Bell, Doyle himself, or the oldest detective in the world, Vidocq - he was summoned into this world as none of the above, but rather, as the protagonist of a series of novels (for his words and actions cannot be thought of those other than that of a protagonist's). In the end, was the story of Sherlock Holmes really a complete work of fiction penned by Sir Doyle, or was it the biography of the actual Holmes as written by Dr. John H. Watson? Perhaps it was somewhere in between the two? At the very least, Holmes himself should know the answer, but it's not a topic he brings up himself, and when the issue does come up in conversation, he always deftly evades the question.[1] His greatest Nemesis was James Moriarty.


According to Bedivere, Sherlock gives off the same odor as Merlin.[2] Character art also depicts him wearing a cape and smoking from a pipe, both of which are recurring elements from the original stories and in many later adaptations in film and television.

Assuming that he is born from stories, then the stories might not only be Doyle's novels, but also the pastiche works as well... or so the Chaldea employees discussed.[1]


“My name is Sherlock Holmes. It is my business to know what other people don't know.”

—Holmes in "The Adventure of the Blue Carbuncle"

“How often have I said to you that when you have eliminated the impossible, whatever remains, however improbable, must be the truth?

—Holmes in "The Sign of the Four"

Holmes is famous for his deductive mind and believes in taking cases for the sake of justice and as an intellectual pursuit rather than for fame, fortune or glory.

Contemplative, but at the same time, active. Bold, but at the same time, precise. And also a calm and composed man. Any kind of mystery, crime, and scheme cannot run from Holmes' eyes. Even if it is a fearsome killer, an ancient curse, a monster of the dark night, and even if it is an ultra nationalistic secret association, he will reveal everything. If necessary, he would defeat it. With the sharp blade called the truth. That way of life has already surpassed the boundary of men. It could even be called the personification of "A Wise Man" or a "Revealer".[1]


Fate/Grand OrderEdit

London: The Death World in the City of Demonic FogEdit

Although he doesn't appear in London, he left some intelligence at the Mage's Association. He organized the documents, and arranged it in a manner that was easy to understand for the Chaldea group. However, if Sherlock had made it too easy, Makiri Zouken would have found out. Andersen mentioned that someone had already organized everything before he started his research. Sir Babbage has tasked Sherlock to uncover a mystery.[2]

Camelot: The Sacred Round Table RealmEdit

He assist Ritsuka Fujimaru, Mash Kyrielight, Xuanzang Sanzang, Tawara Touta and Bedivere. He refuses to join Chaldea.[2]

Shinjuku Phantom Spirit Incident: The Malignant Quarantined Demonic RealmEdit

Agartha: The Mythical Subterranean SocietyEdit

Sherlock Holmes Trial QuestEdit

Other appearancesEdit

He was referenced in Lord El-Melloi II Case Files. Lord El-Melloi II's detective skills was described as comparable to Holmes'.


Mash believes him to be a Caster-class Servant.[2] This is further shown in his Class Skill, Territory Creation , a common Skill of Casters. He is capable enough to take up the Saber and Archer classes.[4] His Noble Phantasm is Elementary, My Dear.

Natural Insight: The ability to perceive the true nature of things. His sharp eyes for observation will not overlook any sort of information. Although their principles are completely different, this can read into the future in a way that is similar to the future prediction of Clairvoyance.[1]

Baritsu: An Oriental martial art that is extremely combat-oriented. Other than employing striking techniques that combine this skill with boxing, Sherlock Holmes also have counters and grappling throws as his forte. If the conditions are right, he can even employ a special move that is on par with the True Name release of a Noble Phantasm, but...[1]


Kotetsu Yamanaka is the character designer for Sherlock Holmes.


In Fate/school life, Eiichirou Mashin held a contest for which he asked his readers to submit designs for the strongest Servant. His Noble Phantasms are Absolute Reasoning (絶対推理, Zettai Suiri?) and Baritsu (バリツ, Baritsu?). (The latter was the method he used to defeat his nemesis, Professor Moriarty, as disclosed in The Adventure of the Empty House, the first Holmes story published by Conan Doyle after Holmes was thought to have died in The Final Problem.)


  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

  2. 2.0 2.1 2.2 2.3 2.4

  3. 3.0 3.1 A Study in the Color of Ravens' Feathers (pt.1) (pt.2) (pt.3) (pt.4)
  4. TYPE-MOON Ace Volume 11

External Links Edit