| ID | 346 |
| Rarity | ★★★★★ |
| Class | Ruler |
| True Name | James Moriarty |
| Gender | Male |
| Source | Sherlock Holmes series · Norse mythology |
| Region | All of Europe |
| Alignment | Chaotic Neutral |
| Height | 175cm |
| Weight | 68kg |
| Strength | C |
| Endurance | C+ |
| Agility | B |
| Magic | B |
| Luck | A+ |
| Noble Phantasm | EX |
| Character Setting | Higashide Yuuichirou |
| Illustrator | Honjou Raita |
| Character Voice | Ito Kent |
| Major Appearances | Fate/Grand Order |
| Related Character | James Moriarty |
Obtaining the Ruler class enabled considerable freedom of action.
A Skill similar to Territory Creation. It allows him to stretch out a spider web of schemes. Its rank was supposed to be A+, but it becomes EX for the young version of Moriarty because it enables him to lay out his conspiracy without trying.
A Skill similar to Disengage. No matter how confusing a situation gets, he is able to devise a plan B. It blocks mental disturbance debuffs. Can block charm, confusion, fear, and Skill seal.
Through precise calculations, he can always make the best decisions in combat.
“What? Combat? Why would I ever fight anyone?”
The slide rule in his hands is no mere ruler. It’s a multi-weapon, capable of morphing into any weapon.
“Excuse me? Who did this to my ruler and why?”
In his future, Moriarty will be pressed to make the choice of his life. Will he become evil or live the path of mathematics? He lived up to that moment calculating everything, but this one decision was the only one he left up to a die roll. The result: what was expected.
The rolls of his die may seem random, but they are always predetermined.
| Rank | B++ |
| Type | Anti-Unit Noble Phantasm |
| Range | 1~10 |
| Maximum Number of Targets | Up to the number of evildoers present |
MMA, for short. Not to be confused with Mixed Martial Arts. It extracts and steals the malevolence of all targets on the field. Every creature has malevolence, except mechanical lifeforms and those who attained sainthood. Extracting them works towards effectively depowering targets. That’s because this malevolence includes feelings necessary for combat, such as fighting spirit, hostility, and bloodlust. If you lack those in battle, you’re doomed to fall behind.
| Rank | B |
| Type | Anti-Unit Noble Phantasm |
| Range | 1~10 |
| Maximum Number of Targets | 10 people |
The yet-to-be-completed formula for planetary collapse. It could be used as a Noble Phantasm to cause major destruction… but Young Moriarty keeps this Noble Phantasm sealed to best of his ability. That’s because his equation is still incomplete, and as such, it’s a thesis not ready to be defended as a Noble Phantasm. The professor gets startled when he receives a question from someone in the defense board. Wait, who is the defense board for Noble Phantasms?
| First-person pronoun | boku / watashi |
| Second-person pronoun | kimi / anata |
| Third-person pronoun | kare / kanojo / 〇〇 (without honorifics) |
An agreeable and eloquent young man. He’s quite sociable despite his scary eyes, an issue that he’s working around to solve. He loves mathematics and always spends his time counting and calculating. He’s on his way to astound the world with his math, or maybe following the path of education. Who knows? Either way, his future is promising.
He approached himself with a choice. “Will I abandon glory? Will I turn evil? You didn’t even need to ask. The answer was decided ages ago. I’ll be the ruler and arbiter of evil.”
He initially faces others as a cheerful and likable young man, but when they know about his future as a schemer grandpa, he turns considerably sloppy and impolite.
He takes the role of a toxic friend from college with suspicious connections or a high school classmate lending his notebook while ruthlessly criticizing you.
Fights using a trick cane and a combat-optimized super-ruler (the Logarithm Accel-Loader). Also, his Conspiracy Creation Skill lets him install improvised traps. His proudest trick is the flour explosion.
Pleased to make your acquaintance, if that’s the first time for you too. My name is James Moriarty. Random question, but have you ever met my older self? You have? …Then I have nothing to hide. Sorry in advance for anything that may happen, as you can see I’m your regular youth. I am certainly lacking experience, but I hope to compensate for it with my youthful vigor.
And the butterfly became the Napoleon. Kneel before me, evildoer. I’m James Moriarty, Napoleon of Crime. This is the moment when I saw my complete form. All thanks to you, Master.
There are no historical records of any math professor or student named James Moriarty. However, there’s nothing proving that “James Moriarty” has always been the name he went by.
The boss of a devilish organization with strings stretched all over Europe. He is so cautious that almost no one, not even within his organization, knows who he is.
This Moriarty is summoned from before that, when he was a young man with a promising future filled with hope. But he had already made the most important choice of his life, so all he had left to do was ruthlessly and relentlessly brave the path of evil.
Nonetheless… He was a mildly better person during his younger days and had something of a fragile self-esteem. He gave off the impression of a very pleasant young man, especially without his makeup.
He’s the final boss, but not the main culprit. He contacted Servants such as Kriemhild, Constantine XI, and Pope Johanna, and requested them to fight a war between Realms.
Moriarty had multiple goals in the Singularity, which complicates his situation. (Moriarty loved the complication)
Step one: arrange a substructure to whittle down Sherlock Holmes. Step two: make the Singularity more chaotic and tumultuous to prevent the alien god from suspecting him. Step 3: drive Chaldea to a corner and approach them as their new savior.
He acquired the Norns as the components he needed for these goals. Urd, Verthandi, and Skuld. Through their power to measure and weave the strings, he neutralized all attacks by establishing he wasn’t fated to get hurt and removed all obstacles by establishing he was fated to overcome them.
…But, as Mash pointed out, this power has a weakness: it will inevitably weaken after he overcame a dramatic fate. The protagonist can’t remain the protagonist for much longer after defeating his arch-enemy.
Holmes challenged him to a one-on-one battle to increase the dramatics of his fate. You could say Holmes’s defeat led to a victory down the line.
In the end, he presented the most amazing riddle before his Saint Graph fully terminated.
A person with so much purpose in his eyes that at their first eye contact, Moriarty determined himself to ruin Holmes before Holmes ruined him.
“I have to hand it to my 50-year-old self, it’s impressive that he managed to battle a guy like this!”
The first thing he was relieved about upon seeing himself aged 50 wasn’t his lucid brain or his evil looks.
“I DIDN’T GET FAT, HELL YEAH!”
It was that his figure remaining roughly the same. But he failed to predict the chronic back pain problems.
He’s a literature guy and I’m a science guy, so we were supposed to be as incompatible as it would get, but… Well, hmm, the unexpected sometimes may happen!
Comment from Illustrator #
Our guy Mori the Young had the most overblown animation costs and I’m to blame for filling up the page with details to my tastes. I hadn’t done a male Servant in forever, so I let the excitement get the better of me. His suit has an old-school military design full of gold strips and gold tinsels. His cane is modeled after dividers, anemometers, and vacuum tubes; made of brass, and choke full of ridged accessories. In his first stage, he carries an item with the measuring capabilities of a T-ruler under his arms. His floating chair is meant to resemble a pipe organ. Every little part of Mori the Young had a lot of thought put into it. (Honjou Raita)