Servant

are Spirits summoned by the Holy Grail for the purpose of competing under Masters in the Holy Grail War.
==Characteristics==
Servants are Spirits made into special Familiars of the highest rank, referred to as Ghost Liners by the Mage's Association, that are bound to the Master. Typically Heroic Spirits under most systems, they can also sometimes be Divine Spirits, Phantoms, Wraiths, and living people depending on various circumstances. 
Pure Heroic Spirits, the "main body" in the Throne of Heroes, can only be summoned by the World, and summoning even one is considered to be a miraculous occurrence. Differing from the normal definition of Familiars that can be likened to minor mascots unable to be stronger than their masters, Heroic Spirits are the most powerful of beings with which even the five Magicians would never be able to forge a contract with. Rather than it being a hard process to summon them or the fact that they far surpass Magi, it is their intrinsic nature in that they are beings beyond Magecraft. 
Magi can perform rituals to borrow their power to mimic them, such as using Spiritual Evocation's Partial AccessLord El-Melloi II's Case Files Volume 10: case. Grand Roll (Lower) - Chapter 3 Part 4 and Trance Mediumship,Fate/stay night - Fate route - Day 3: long day, long night - Tohsaka Rin (II) but cannot summon actual Heroic Spirits themselves.Fate/stay night Prologue - Day 3Lord El-Melloi II Case Files Volume 4: case. Mystic Eyes collection train (Upper) - Chapter 4 Part 2 Even then, the technique to momentarily borrow a part of such a power is extraordinarily hard to do.
Even the Holy Grail lacks the power to summon a true Heroic Spirit, so the process is facilitated by summoning them into one of seven vessels prepared beforehand. The Greater Grail makes a copy using information from the "main body" of the Heroic Spirit, an "emanation", that returns to them as information, in the form of a soul, upon the death of the Servant. Disconnected from the "main body", they are able to know of the actions of the Servant through records, as if reading a book.
Similarly as to how Daemons require a form invented by humans in order to take shape, Heroic Spirits need a form to exist in the world. The vessels, Classes, act as their temporary name and method of existing. Acting like a "passport to the present", the vessel prepares them for their role as a Familiar in advance, allows them to take on that role to help them take form, and brings them forth into the world. Each Class identifies only the core Skills of the Heroic Spirit because replication of all their abilities is impossible. Their main traits align with the Class and are given form, matching the principal nature of the Class.Fate/EXTRA - Saber route - Week 1 Only heroes matching the attributes of the Classes are brought forth, allowing them to be summoned into any reflecting their abilities.
Although too powerful to be controlled by humans, they are bound by three Command Spells, representing the Masters' "right to rule" over them, with obedience towards the Command Spells being the "absolute condition required for materialization." 
Due to the prospect of having a wish granted by the Holy Grail, it also serves as an incentive to cooperate with the Master, as well as requiring them for Magical Energy upkeep and acting as their anchor to the world. Killing them will normally go against their purpose, but the Command Spells protect the Master from those who would kill them to seek out one who would be more suitable.
===Origin===
The is a ritual by the Planet to summon "humanity's strongest seven Heroic Spirits," Grand Servants, to fight against "a single powerful enemy," such as the Beasts. 
 is a derivative of that ritual, alterering the spell to be used by humans for the sake of wishing on a Holy Grail. It took the concept of "seven powers against one" and turned it into "seven Heroic Spirits fighting one another." In comparison to the Grand Servants, the resulting Servants are described as "cheap, convenient, multi-purpose Familiars" by Andersen.Fate/Grand Order - London: The Death World in the City of Demonic Fog - Section 8: The Death of the Mage's Association
===Class Name===
The of a Servant is the name by which they are referred in a Holy Grail War. Corresponding to their Class, the Master will typically refer to them only by that name to avoid exposing their True Name.
===True Name===
The of a Servant is something vital to battle, as it can reveal much about them. They most often have their Masters refer to them solely by their class name unless they do not care like Jack the Ripper, wish to have a closer connection to their Master like Tamamo-no-Mae after she reveals her identity, or are under circumstances where it no longer matters like those trapped in the Sakura Labyrinth. There are Servants and Masters with extreme confidence or no filter in revealing their True Names for all to hear, such as Iskander exclaiming his name without regard and Illyasviel von Einzbern having supreme confidence in Heracles even with his name revealed.
Their names can reveal certain traits about their abilities, allowing for specific countermeasures, and there are many famous heroes that had met untimely deaths in life. Those killed by poison will be more susceptible to it, those shot down by arrows will be weak against them, those with weak spots will be severely disadvantaged if they are targeted, and those with traits like being weak to monster-slayers or Dragon-slaying weapons can be specifically damaged in accordance. 
Even without such a specific countermeasure being available to one Master, releasing that information to the other Masters can allow for other countermeasures to be brought forth. Most Masters should know instantly of their own Servants' identities, but something like Secret of Pedigree can block even that, and the refusal of a Servant to disclose it can keep them from knowing. In the case of a weak Master susceptible to mind control, they may forgo telling them altogether until necessary.
Famous heroes like King Arthur and Siegfried are very likely to have their identities found out more easily than others, with simply glancing upon Excalibur being enough for any Heroic Spirit to identify King Arthur. Others need to utilize their Noble Phantasms before they reveal themselves, but it may require deductive reasoning even then. While the oldest legendary hero Gilgamesh is able to show off his Noble Phantasms without many being able to guess his identity, and despite his belief that his identity should be obvious to others, he generally discloses it himself.Fate/stay night - Fate route - Day 14: moonlight (I) - Oldest King 
Someone like EMIYA, being a Counter Guardian from the future and displaying numerous Noble Phantasms with Unlimited Blade Works, is a complete anomaly to others, greatly confusing all who fight him with his contradictory traits that do not match any known hero. There are also those without specific weaknesses whose True Names will bring no trouble if revealed, like Astolfo.
There may be slight variations to the True Names depending on different circumstances:
*Lily/Larva
*Alter
*Santa
===Body===
Although Servants are beings of Ether that do not get energy from oxygen, they are given forms similar to air-breathing lifeforms, allowing them to "carry out pulmonary respiration as a land type endoskeleton life form." Though they do not require oxygen to function, the lack of air from suffocation can halt their Magical Energy cycle. Though they can likely endure more than a human, they will eventually reach their limit if enough time passes.Fate/Prototype: Fragments of Sky Silver Volume 4: Dear My Hero Arc - Act 4 Differing from the normal blood of humans, the blood of Servants is the Magical Energy that drives their Saint Graph.Fate/Grand Order: Cosmos in the Lostbelt - Imaginary Scramble - Section 1: The Unknowable Reef (3/6) The bodies of Servants can still be affected and killed by fatal amounts of radiation despite being spiritual lifeforms.Fate/Grand Order: Cosmos in the Lostbelt - Nahui Mictlan: Golden Sea of Trees Travelogue - Section 19: The Cosmic Tree
While some Servants exercise for recreation, their body of Ether is unaffected aside from generating sweat.Fate/Grand Order - Fergus' Valentine If a Servant's body part is severed, it can remain in the world so long as the Servant's Spiritual Core is intact. If it is given another source of Magical Energy before the Servant fades away, it can remain in the world afterward.Fate/stay night - Heaven's Feel route - Day 10: darkwood,sleepingbeauty - Artificial Phantasm
====Appearance====
Heroic Spirits will most often take the form that represents their golden age at the prime of their lives, but effects like those of a strong curse or a personal attachment to the form can change that to even their selves from just before death. Certain wounds, conditions, and illnesses may remain should they be "something indispensable" for their origin, such as Nero Claudius's migraines as the Skill Migraine, Okita Souji's tuberculosis as the Skill Weak Constitution, and Beni-enma's severed tongue.Fate/Grand Order - Beni-enma Interlude: The Secrets of the Book of Enma 
Once a Servant has been summoned in a Holy Grail War, it is possible for them to retain items from the war, such as Cú Chulainn's makeshift spear from the Second Tokyo Holy Grail WarFate/Grand Order - Cú Chulainn (Prototype)'s Valentine or Artoria's lion plush given to her by Shirou Emiya.Fate/Grand Order material I - Artoria Pendragon (Saber) Profile 
If a Servant is summoned or altered in an abnormal way, that self is recorded. Amakusa Shirou Tokisada says that his summoning in the Ruler-class is a right he gained after his Master forced him into the class, but summoning him without an urgent matter would be almost impossible.Fate/Grand Order - Amakusa Shirou Tokisada Interlude: Let's Talk About Saving the World
Skills like Mad Enhancement, Mental Pollution, and Innocent Monster can influence their forms and personalities when summoned as Servants, changing them drastically depending on how they were perceived in life or after death. The preference of the Master and suitability for certain Servant classes may also affect them. It also may be the case that how history recorded them became distorted, such as Astolfo appearing feminine when history calls him the "most handsome" of his peers, Alexander the Great being very tall when history recorded him as shorter than average, and those of an opposite gender from their legends.
For those of an opposite gender from recorded history, Chaldea Security Organization notes the phenomenon happens quite frequently, citing lost or misrecorded history, the body representing a unit of Servants rather than an individual person, and other unique cases. Such cases typically come from eras where records are sparse, so the idea of it happening with a famed person from modern history who left behind photographs, self-portraits, and personal anecdotes is seen with suspicion. Chaldea's speculation on such a case would be someone deluded into believing they are the individual, an abnormal Saint Graph, or simply a lie about their True Name.
*Artist Servants - Mozart's opinion is that artist Servants can only be summoned in two states, their selves as children and their selves as young adults. He declares they can appear in no other age, stating that their peak represents the height of their "genius." For those summoned as children, he states, "The ones who appear as children grew up to be decent, dignified adults. That's why they manifest as 'children,' when they were called geniuses. Child prodigies who didn't care about the problems they caused." As the talents of an artist originates from their instinct, they are summoned at the point said instincts were their strongest, their state as "pure geniuses." For young adults, Mozart states, "Those ones are weirdos and scum, who would never change until the day they die!" Romani Archaman states that such a declaration is convincing coming from Mozart.Fate/Grand Order - Mozart Interlude: Symphony of the Heroic Spirits
*Elizabeth Báthory - Elizabeth is summoned as the unwed daughter of house Báthory, and Innocent Monster brings out the qualities of her Dragon blood.
*Hans Christian Andersen - Summoned in the form of a young boy for an unknown reason, he attributes it to either being the point where he was "most overflowing with sensitivity" or possibly the preference of his Master, Kiara Sessyoin. Innocent Monster causes him to take on a number of attributes from his stories.
*Jack the Ripper (Berserker) - Having never been revealed to the public, this form of Jack the Ripper can take on the forms of any of the multitude of theories behind the murders.
*King Arthur - King Arthur is a special case in that she is not yet deceased as of her summoning. Taken directly from when she makes the Contract with the World, she is different from regular true Heroic Spirits.
*Li Shuwen - Normally older after having discovered in life that his true strength was that of his convictions, his Master wishing for a stealthy Servant brings forth his younger self with traits more suited to his Assassin class.
*Medusa - While she appears in the human state from before her descent as a monster, she is just the Gorgon in human form. Sides of herself can become those of a monster at any time, mirrored by her Monstrous Strength Skill.Fate/hollow ataraxia - Other - Emiya's - Monster
*Nursery Rhyme - Takes on the form of its Master's projected feelings.
*Hassan of the Hundred Faces - While a single being in life, his Noble Phantasm Zabaniya: Delusional Illusion has separated him into many different entities that wish to have a unified personality.
*Vlad III - Strongly influenced by both his heroic deeds in Romania and the attribution of Dracula to his legend, he has been shown in two different states. Innocent Monster greatly applies the status of Dracula to him, while being summoned in Romania greatly emphasizes his heroic aspects.
====Manifestation====
Archer materializing (Ufotable).gif|EMIYA materializing in front of Shirou.
Rider manifesting to check on Archer (Lost Butterfly).gif|Medusa materializing in front of EMIYA.
Servants are beings able to switch between a Spiritual Body and Material Body at will. While in spiritual form, they cannot be easily detected by enemies due to being invisible to the naked eye and most forms of scrying, or be affected by physical interference. They can travel where they please without being impeded by walls, but they also cannot carry anything in that state. Their senses are limited to spiritual sensations, so they must materialize in order to fully experience normal senses when sharing a visual link with their Master. Their upkeep cost is low when not materialized, so many Masters prefer them to stay in spirit form when they are not fighting or doing other tasks that require them to be in physical form to lower the cost on themselves. Depending on the disposition of the Servant or a special case like Artoria Pendragon, such an order may be impossible. It is also hard for them to affect a Material Body in that state, so they must materialize to properly engage in combat.
While they may bleed and take damage to their organs, their true being resides in a they obtain upon first materializing. The Spiritual Core is described as "their center, their heart, their CPU" that dictates their every function.
Their Material Body envelopes the core, and damage must be inflicted to it in order for them to be defeated. It gradually diminishes under Magical Energy expenditure and while sustaining bodily damage, and their expenditure will escalate under such conditions. If it is damaged through powerful Magical Energy, curses, or Noble Phantasms, it will be destroyed, meaning that the Servant can no longer stay materialized. The heart and head are directly connected to it, so they are a Servant's greatest weaknesses. Sustaining damage will significantly weaken it, with some Servants having it instantly destroyed and some with Skills like Battle Continuation being able to at least temporarily sustain themselves.
While they have Material Bodies like humans, the composition is drastically different. They are of a much higher magnitude, so it is normally impossible for portions to be transplanted onto a human. Shirou Emiya is able to obtain Archer's arm due to them being the same person. Normally the recipient would die of shock, but being even closer than twins allows the surgery to succeed, although Shirou needs to wear the Shroud of Martin to supress the negative effects Archer's arm would have on his body. It is still too much for him even in that case, so being connected to it slowly kills him. Sieg, a Homunculus, obtains Siegfried's heart, gaining the ability to transform and have a longer lifespan, yet his body is consumed by memories of Siegfried until it is no longer the same, ending up transforming into a Dragon.
Erice Utsumi, through her Dread Spirits, can use her power to rip out a Servant's Saint Graph, killing them. The Saint Graph blackens and becomes one with Erice's branch, and Servants killed in this way do not return to the Throne of Heroes, so if a new copy of them is summoned they will not remember the experiences of the version that was killed.Fate/Requiem Volume 1: The Boy Among the Stars - Chapter 5
====Upkeep====
Servants must maintain a certain amount of Magical Energy to remain materialized and fight, and they must have an anchor to the world, their Master or another physical being in order to remain in the world. Their current strength is reflected by their current stores of Magical Energy, so they will lose strength as they lose Magical Energy. The Holy Grail itself provides most of the upkeep for Servants during the duration of the Holy Grail War, so Masters, granted Magical Paths to supply Magical Energy, do not need to provide vast amounts of Magical Energy normally. 
Herc draining Illya.gif|Heracles draining Illya's Magical Energy causing her immense pain.
More Magical Energy intensive Servants like A-rank Servants and Berserker-class Servants can still pose a great threat should they not have the ability to provide their upkeep, even draining them to death in the case of Berserkers. Those who are cognizant are able to throttle the Magical Energy they intake, keeping their output to a minimum or using only their own stores when their Masters are unable to provide their full cost. 
If the Servant is without a Master, has issues with the Magical Paths, or has a Master unable to supply Magical Energy, they must supplement themselves elsewhere. As Human Spirits, they have the ability to consume the Souls and minds of people and convert them into Magical Energy. Their basic abilities do not change from such nourishment, but they become tougher as their Magical Energy capacity increases. They can also intake semen or blood for energy depending on their method of processing it. Places like Ryuudou Temple can naturally allow them to subside longer, and draining directly from Ley Lines is possible for some. 
With a full stock of Magical Energy, they can subside for a time even with the constant cost of upkeep, and they regain some Magical Energy from their own Magic Circuits daily. Remaining in spiritual form can decrease their upkeep, and while in material form, dematerializing weapons and armor can help cut it somewhat. Food can be converted to supply some Magical Energy, and sleeping can stop the consumption. This only helps when no action is taken due to even a single battle using upwards of twenty times as much Magical Energy as simply existing, so such methods are only stop-gaps compared to taking in souls.
Servants do not need to eat food, but food can be converted into Magical Energy to slightly offset energy consumption.Fate/stay night - Fate route - Day 12: Interval Level4 - Brave leader Hungryheart Many Servants, especially those who are royalty, choose to do so for recreational purposes.Fate/Apocrypha Volume 1: Apocrypha: Great Holy Grail War - Chapter 2 In the case of a Servant possessing a human body directly like Jeanne d'Arc, she needs to eat due to the high amount of calories she burns as a Servant affecting the body's energy, but the human body will not die from starvation.Fate/Apocrypha Volume 1: Apocrypha: Great Holy Grail War - Chapter 3 Servants can become intoxicated from alcohol consumption.Fate/Grand Order - Almost Weekly Santa Alter
Servants do not need to sleep, but they can sleep in their physical body as a means of reducing Magical Energy consumption if they cannot or refuse to return to spiritual form.Fate/stay night - Fate route - Day 4: Partner - Saber's circumstances For Artoria Pendragon who cannot receive Magical Energy or return to spiritual form in the Fifth Fuyuki Holy Grail War, sleeping combined with her natural regeneration of Magical Energy give her a small surplus of energy if she doesn't battle.Fate/stay night - Heaven's Feel route - Day 4: Avenger - Intruder They do not posses the function to dream like humans, but the Master and Servant connection can allow some Master and Servant pairs to see past memories of each other in the form of dreams.Fate/stay night - Fate route - Day 12: Interval Level4 - The king's memories
Even having a full supply will not help a Servant should they lose their anchor to the world with the loss of their Master, so they must quickly seek out another contract. While normally not much of a burden, their Magical Energy noticeably drains by the second without one. Depending on the amount of Magical Energy and upkeep cost, they may only be able to stay materialized for a brief time. Artoria Pendragon can manage only two hours, while Medea can last two days with a full supply of Magical Energy. 
Those with Independent Action are able to subside without Master support far longer than others, allowing them a better chance to seek out another contract. Much like the class container, their anchor is a "passport to the current age", so losing that will mean being forced to return to the "outside." They cannot form proper contracts with other Servants, as Spirits cannot link Spirits to the World. Medea is able to summon Sasaki Kojirou, but it is an improper summoning with several complications; rather than her being his anchor, it is the mountain gate, so Assassin cannot leave the area. Without a Master, they are no different than regular Spirits and may be affected by the Holy Church's Scripture.
It is possible to remain materialized as a normal Familiar after the Holy Grail War ends, but it greatly increases the cost without active support from the Holy Grail. Rin Tohsaka, a superior Magus, has no issue in providing for Artoria Pendragon's upkeep, Noble Phantasm usage, and Shirou Emiya's Reality Marble at the same time during the Holy Grail War, but in-turn requires the majority of her Magical Energy and Shirou's help in keeping Saber materialized after it ends in Unlimited Blade Works. 
The only one easily able to maintain a Servant is Sakura Matou after becoming the Lesser Grail in Heaven's Feel, granting her a limitless supply that easily allows her to maintain Medusa. 
Gilgamesh incarnating allows him to exist indefinitely by granting him A+ Independent Action, allowing him to exist for ten years with no issues. Amakusa Shirou Tokisada becomes incarnated through another method, allowing him to exist for about sixty years. Chaldean Servants can be maintained for an essentially infinite amount of time due to the combination of an advanced Magical Energy Reactor and Merlin providing a link to Avalon's Mana,Fate/Grand Order - Babylonia: The Absolute Frontline in the War Against the Demonic Beasts - Section 2: Humanity's Oldest Fortress City and are furthermore able to retain far more Magical Energy than they could if they were summoned through other methods.
==Classification==
Heroic Spirits summoned by the Holy Grail are placed into one of various . The seven standard classes are the classes of Saber, Lancer, Archer, and the classes of Rider, Caster, Assassin, and Berserker. There are also non-standard that are "split off from the regular servant classes in order to take on certain roles", such as Ruler which oversees the Holy Grail War.Fate/Grand Order - Jeanne Alter Interlude: That Which Must Be Corrected 
Sherlock Holmes posits that due to Heroic Spirits being a concept irrespective to the existence of Classes formed for the Holy Grail Wars that not all cases of Heroic Spirits can fit into the mold of the Class system. While the Extra Classes can lessen the chance, he says that the amount of Heroic Spirits forced into Classes under which they do not belong will not be zero. This could lead to potential strain on the Servant, such as Florence Nightingale, where they are unable to deduce if her mentality reflects that of her mindset in life or a characteristic granted solely by the Berserker class. The latter case could lead to strain on her mind and Saint Graph.Fate/Grand Order - Florence Nightingale Interlude 2: The One Fighting For Someone
Under the Fuyuki-based rituals, it is said that only the Three Knight classes will definitely be summoned according to the framework of the ritual, allowing for variation in the rest of the classes. Classes are said to have occasionally changed between the various Fuyuki Holy Grail Wars, but the Three Knight classes will never be replaced by Extra Classes.Fate/strange Fake Volume 3 - Interlude: "Watcher" More than one version of the same class cannot be summoned, even if all the Masters were to use the variation in the summoning chant to get a Berserker-class Servant for example. Within the framework of the False Holy Grail War, the Saber-class does not even exist. Other systems like the Moon Holy Grail War, Chaldea system, and "After" the Holy Grail War allow for the summoning of hundreds of Servants, so there is no restriction on multiple classes.
Servants are normally only of the singular class under which they are summoned, but certain circumstances allow for multiple classes at once or class changes.
*Within Chaldea Security Organization, the Servant Saint Graphs are able to be self-modified in certain circumstances.
*The Skill Double Summon allows for two classes to be utilized simultaneously, limited only to the Cavalry classes and "modern classes" like Gunner.
*The Skill Double Class denotes a Servant formed from the fusion of two others, but provides "No actual benefits in particular."
*The Berserk status is able to be added to a Servant to grant a Berserker-like mindset.
*Within the Class Card system, Berserker Class Inheritance confers the status of Berserker on another card.
*Elizabeth Báthory and Li Shuwen undergo unconventional changes to the Berserker class in the Moon Holy Grail War.
Some Servants possess the innate ability to switch classes:
*Assassin Servant Henry Jekyll and Berserker Servant Hyde can switch between each other at will with their Noble Phantasm Dangerous Game.
*Saber Gilles de Rais has the potential to turn into his Caster self through the usage of Prelati's Spellbook.
*Atalanta Alter, summoned in the status of using her Noble Phantasm Agrius Metamorphosis, will return to her Archer self if the Noble Phantasm is forcibly peeled off.
*Tokugawa Ieyasu naturally possesses the ability to switch between all seven standard classes.
*Jack the Ripper's Saint Graph will change and he will cease to be a Berserker if his true identity is revealed.
===Standard Classes===
;The seven servant classes summoned during a Holy Grail War.
*Saber: Servants placed within this class have high parameters and are powerful melee warriors armed with swords. It is commonly assumed to be the best class overall. The class skills of this class are Magic Resistance and Riding.
*Lancer: Servants placed within this class are very agile and skilled with long-range melee weapons, such as spears, lances, etc. The class skill of this class is Magic Resistance.
*Archer: Servants placed within this class are usually proficient with projectiles and can survive longer without a Master nearby due to their special class skill Independent Action; the strongest Archers can be difficult to control at times, in fact, due to their near-total independence from their "Masters". The class skills of this class are Magic Resistance and Independent Action.
*Rider: Servants placed within this class place emphasis upon speed and powerful Noble Phantasms, which often include their mounts. Their special class skill is Riding, which allows them to fully utilize abilities of their mounts (which can range from simple horses to mechanical vehicles to divine or supernatural creatures). The class skills of this class are Magic Resistance and Riding.
*Caster: Servants placed within this class are adept in Magecraft and have a special Class skill akin to a Reality Marble, called Territory Creation, which alters or creates space around them to enhance their sorcery. The class skills of this class are Item Construction and Territory Creation.
*Assassin: Servants placed within this class are proficient in assassination and stealth. Within certain wars, only Hassan-i-Sabbah can be summoned due to the etymology of the word "Assassin" acting as a catalyst. The Assassins' special Class skill is Presence Concealment, which allows them to remain undetected. Offset by their stealth is their moderate combat skills. Due to this, Assassins often target Masters instead of Servants. The class skill of this class is Presence Concealment.
*Berserker: Servants placed within this class are always heroes who have gone berserk in their lifetime or fight recklessly. This trait allows them to use the special Class skill Mad Enhancement, which trades their consciousness (i.e. sanity) for a large power boost. Most Masters are incapable of controlling their Servant once Mad Enhancement has been activated, which eventually results in their death. The class skill of this class is Mad Enhancement.
====Extra Classes====
;Servant classes that are summoned as a result of unconventional circumstances.
*Ruler: Servants placed within this class govern the Holy Grail Wars and are summoned by the grail directly due to situations that could threaten the war, they are granted rights of an administrator and Command Spells. While typically saints are summoned into it while managing wars related to the Holy Grail, others can be summoned into the class if they are impartial. The class skills of this class are Magic Resistance, Item Construction, God's Resolution and True Name Discernment.
*Avenger: Servants of this class can be summoned by tampering with The Holy Grail’s summoning ritual, Servants placed within this class are driven by revenge that did not fade even after their deaths. The class skills of this class are Magic Resistance, Avenger, Oblivion Correction and Self-Replenishment (Mana).
*MoonCancer: Servants placed in this class are described as irregulars that threaten the world of the moon. The class skills of this class Magic Resistance vary between servants with the only skill shared among all of them being Territory Creation.
*Alter Ego: Servants placed within this class are beings split away from the Saint Graph of another and now act independently from their original selves. A phenomenon where one persona of that Heroic Spirit gains independence as a separate entity. The class skills of this class vary between servants.
*Pretender: Servants placed within this class are those who became heroic spirits while pretending to be someone else in life, they are masters of deception, and are able to deceive the World itself with their lies. Among other effects, this allows them to disguise themselves as another Class and even use that Class's Skills.
*Foreigner: Servants placed within this class are those who have survived being connected to the Outer Gods that exist outside the universe, and wield strange powers tied to their otherworldly patrons. Such Servants are rarely summoned, as they can inadvertently act as a path for the Outer Gods to enter the world for their own incomprehensible purposes. The class skill of this class is Existence Outside the Domain.
*Shielder: Servants placed within this class primarily utilize a shield and excel in defensive techniques. The class skills of this class are Magic Resistance, Riding and Self-Field Defense.
*Faker: Servants placed within this class are represented by fakes, summoning counterfeits and body doubles. The class skills of this class are Independent Action and Camouflage.
*Watcher: Servants placed within this class have some function of observing their Master for a greater purpose. The class skills of this class are Magic Resistance and Territory Infringement.
*Saver: Servants placed within this class are "Messiah" type Servants. The class skills of this class are Charisma and Counter Hero.
*Non-classed: Some temporary Servants, like the army summoned into Ionioi Hetairoi, are Servants without a class. Gilgamesh during Fate/EXTRA CCC is beyond being confined to a class, so he does not have one.
=====Unknown Extra Classes=====
;Servant classes of which the details surrounding them are unknown.
*Voyager: Details of this class are unknown. Voyager normally qualifies for this class. The class skills of this class are Independent Navigation and Contact with Civilization.
*Gunner: Details of this class are unknown. It is a “modern day” extra class, Servants of this class specialize in firearms.
*Gatekeeper: Details of this class are unknown. Watcher could be summoned within as a Servant.
*Ancient Giant: Details of this class are unknown. It is shown to be the class of Surtr.
*Ancient God: Details of this class are unknown. It is the Saint Graph Designation of Zeus.
*Funny Vamp: Details of this class are unknown. This is the class that would be granted to Arcueid Brunestud by the Moon Cell should she participate as a Servant.
*Traveler: Details of this class are unknown. Aoko Aozaki normally qualifies for this class.
======Grand Classes======
:Grand Servants (Grand Class) are existences summoned by the Counter Force in order to prevent the extinction of mankind by the Beasts.
*Grand Saber
*Grand Archer
*Grand Lancer
*Grand Rider
*Grand Caster
*Grand Assassin
*Grand Berserker
======Beast Classes======
:Beast class is a special container for the Evils of Mankind, they manifests as calamities that threaten human history. They possess the Class skills Authority of the Beast and Independent Manifestation as well as a Nega-skill unique to each Beast.
*Beast I
*Beast II
*Beast III/L
*Beast III/R
*Beast IV
*Beast V
*Beast VI/S
*Beast VI/G
*Beast VII
*Null Beast
======Altered Classes======
;Classes that are brought about by altering the system on a superficial level. The class of the Servant does not actually change.
*Launcher: Launcher, the "Heroic Spirit of the Laser Beam", is a special nickname thought up by Jinako Carigiri for her Servant.
======Parody Classes and others======
* is a class designated to Bazett Fraga McRemitz in the parody work Capsule Servant.
* is used in a joking manner in regard to Archer's household skills.
* is a nickname given to Gilgamesh by Lancer.
* is the self-declared nickname of Lancer.
* is the self-declared nickname of Assassin.
* is not a Servant classification, but rather the title given to the irregular being, Shiki Ryougi, who appears within the Holy Grail War of the Moon Cell.
* is the self-declared nickname of Caster.
* is the name Taiga Fujimura gives herself in the Hanafuda scenario, but Illya just decides to turn it into "Taiga".
==Mental==
====Alignment====
All Servants have an , a status showing a clear representation of the mentality of the Servant, differing from the elemental alignment of Magi. 
It is broken down into two parts, a combination of the principles they consider important to their personality. Principles are reflected as , , and , and their personalities are reflected as , , and . 
Other personalities include and .Berserker Servants have also displayed as a "principle", and and as their "personalities." Differences in personality will not result in major discord, but differing principles can make Servants resolving their differences of opinions difficult. 
While two Servants may have the same personalities as "good", like King Arthur and Gilgamesh, their Lawful and Chaotic principles lead to differing opinions.
;Servants without a known alignment can be found here.
Alignments
 	Lawful 	Neutral	Chaotic
Good 	Lawful GoodAmakusa Shirou TokisadaBedivereBradamanteChironHenry Jekyll
GarethGawainFlorence NightingaleGilles de Rais (Saber)Gilgamesh (Caster)Hassan-i-Sabbah candidateHippolytaIshtarIshtar (Swimsuit)
JasonJeanne d'ArcKing ArthurArtoria Pendragon (Lancer)Artoria Pendragon Alter (Lancer)Artoria Pendragon LilyArtoria Pendragon (Santa Alter)Artoria Pendragon (Swimsuit)GeorgiosKarnaKingproteaMarie AntoinetteMarie Antoinette (Swimsuit)MarthaMartha (Swimsuit)Mash KyrielightMecha Eli-chanMecha Eli-chan MkIIMedea (Lily)MeltryllisMerlinMinamoto-no-Raikou (Swimsuit)Mysterious Heroine XXNitocrisNitocris (Swimsuit)ParvatiPenthesileaQin LiangyuQuetzalcoatlRamaSakata KintokiSolomonTristanVlad III (Fate/EXTRA)Xuanzang SanzangYagyuu Munenori	Neutral GoodAlexander the GreatBoudicaBrynhildr
Charlotte CordayGeronimoIllyasviel von EinzbernKarna (Fate/EXTRA CCC)Medusa (Child)NezhaQueen of ShebaRobin HoodScáthachScáthach (Swimsuit)Sherlock HolmesSigurdTawara ToutaWolfgang Amadeus MozartZhuge Liang	Chaotic GoodAstolfoAttila the Hun
BBBeowulf
Chen GongChloe von EinzbernEuryaleGilgameshHelena BlavatskyHelena Blavatsky (Swimsuit)Irisviel (Dress of Heaven)Jeanne d'Arc Alter Santa LilyJing KeLeonardo da VinciMedusaMinamoto-no-RaikouMiyamoto MusashiMordred (Swimsuit)Musashibou BenkeiNero ClaudiusNikola TeslaParacelsus von HohenheimSiegfriedShiki Ryougi (Assassin)SthenoTamamo CatToyotomi Hideyoshi (Kinoshita Toukichirou)Violet
Neutral	Lawful NeutralAchillesArcueid Brunestud (Berserker)ArjunaBuddhaCleopatraCú ChulainnCú Chulainn (Prototype)Darius IIIDavidDiarmuid Ua DuibhneHectorLancelotLeonidas IOda NobunagaPassionlipScheherazadeSolomon ibn GabirolThomas EdisonVlad III (Fate/Apocrypha)	True NeutralEMIYAEnkiduFergus mac RóichFionn mac CumhaillGaius Julius CaesarHans Christian AndersenHozoin InshunKato DanzoLe Chevalier d'EonMaxwell's DemonNo NameOkita Souji
ParisPaul BunyanSakamoto RyoumaShiki Ryougi (Saber)SpartacusTomoe GozenWilliam Shakespeare	Chaotic NeutralAnne Bonny and Mary Read (Swimsuit)ArashBilly the KidChachaCharles BabbageCirceEric BloodaxeFrankensteinJaguar ManKatsushika HokusaiMata HariMary ReadMordredMysterious Heroine XOsakabehimeOzymandiasRomulusToyotomi Hideyoshi (Hashiba Hideyoshi)Ushiwakamaru
Evil 	Lawful EvilCharles-Henri SansonFirst HassanHassan of the Cursed ArmHassan of the Hundred FacesHassan of SerenityHijikata ToshizoArtoria Pendragon Alter (Saber)Artoria Pendragon Alter (Swimsuit)SemiramisWu Zetian 	Neutral EvilAtalantaChristopher ColumbusLi ShuwenJack the Ripper (Berserker)
Kama (Summer)MedeaMysterious Heroine X (Alter)Okada IzoSasaki KojiroSuzuka GozenTamamo-no-Mae	Chaotic EvilAbigail WilliamsAlcides (Heracles)Angra MainyuAnne Bonny and Mary Read
Bartholomew RobertsBB PeleCaligulaCarmillaCú Chulainn (Alter)Edmond DantèsEdward TeachElizabeth BáthoryElizabeth Báthory (Brave)Elizabeth Báthory (Halloween)EMIYA (Alter)EMIYA (Kiritsugu)EreshkigalFrancis DrakeFrançois PrelatiFuuma KotarouGilles de RaisGoetiaHessian LoboHydeIbaraki-doujiIbaraki-douji (Swimsuit)Jack the Ripper (Assassin)James MoriartyJeanne d'Arc (Alter)
KamaKiara Sessyoin (Alter Ego)KiyohimeKiyohime (Swimsuit)Lu BuMedbMedb (Swimsuit)GorgonMephistophelesMochizuki ChiyomePhantom of the OperaSalomeShuten-douji
TiamatToyotomi HideyoshiVlad III (Berserker)Yan Qing
Alignments
 	Lawful 	Neutral 	Chaotic 	Insane 	Variable
Summer 	Lawful SummerJeanne d'Arc (Swimsuit)	Neutral SummerFrankenstein (Swimsuit)Tamamo-no-Mae (Swimsuit)Ushiwakamaru (Swimsuit)	Chaotic SummerJeanne d'Arc Alter (Swimsuit)Nero Claudius (Swimsuit)Oda Nobunaga (Swimsuit)	Insane Summer 	
Mad 	Lawful MadLancelot 	Neutral Mad 	Chaotic MadHeraclesMori Nagayoshi 	Insane Mad 	
Bride 	Lawful Bride 	Neutral Bride 	Chaotic BrideNero Claudius Caesar (Bride) 	Insane Bride 	
Reckless	Lawful Reckless 	Neutral Reckless 	Chaotic Reckless 	Insane RecklessElizabeth Báthory (Berserker)	
Variable	 	 	 	 	Changes depending on MasterNursery Rhyme
====Knowledge====
Those summoned as Servants are given the minimum information required to allow them to fit into any era. No matter how ancient the Heroic Spirit, they should understand a number of concepts that were not known in their time.Fate/Zero Volume 1: The Untold Story of the Fourth Holy Grail War - Act 2 Part 1 -268:22:30 
The idea that Artoria may be shocked about the immediate world initially worries Shirou Emiya, but the knowledge makes such worry unnecessary. Irisviel von Einzbern first believes that Saber may find flying in a plane to be an amazing experience, but it instead seems less than expected to her. Flying in a plane is also mitigated due to her Riding Skill that could potentially even grant her the ability to fly it. While not given enough information to actually drive modern vehicles, higher ranks of Riding grant the ability to manage such through intuition even if they do not actually recognize what each separate control of a vehicle will actually perform what action.Fate/Zero Volume 1: The Untold Story of the Fourth Holy Grail War - Act 3 Part 2 -162:27:03 
Conversely, even though Jeanne d'Arc understands the basic principles behind the concept of a plane, she is unnerved by the idea of a mass of metal flying through the sky and only has the relief that it did not fall out of the sky after landing. With language, Iskander displays the ability to speak English to his Master, Waver Velvet, and also speak Japanese to Taiga Fujimura, allowing him to easily translate between the two.Fate/Zero Special Drama CD 3: The Outsiders’ Performance - Track 1
The knowledge is not all-encompassing, so concepts may still have to be explained to them. Rider is shocked at the true scope of the world compared to the area he had conquered in life, and needs to have certain areas shown to him on a map. He enjoys spending his time learning about different aspects of the world such as wars since his time, and details like the price of a stealth bomber are not immediately known to him. Saber does not understand the idea of dating until it is specifically explained.Fate/stay night - Fate route - Day 14: moonlight (I) - Hurry go round 
They are granted knowledge on the Holy Grail ritual itself, but only as much as the outside Masters are told. They do not know of its true purpose in being a method requiring all seven to be sacrificed to reach the Root, only believing it to be a war for a single wish. The knowledge can change upon the nature of the war changing, allowing knowledge of the two teams of Servants and factions of the Great Holy Grail War to be given to them.
They are not granted knowledge on other Heroes through the Holy Grail, but rather from knowledge gained within the Throne of Heroes. Witnessing traits of other Servants can allow them to deduce their True Names with the knowledge even if they are from incompatible eras. Aberrations like Artoria Pendragon, who is not part of the Throne of Heroes due to her circumstances, are able to identify those whose legends would have been known to them in life, such as Cú Chulainn,Fate/stay night - Fate route - Day 3: long day, long night - Promised sign but cannot identify the legends of later Heroic Spirits like Gilles de Rais even after being directly named.
====Memories====
Under the Fuyuki system, Servants are summoned with the memories of only when they were alive, not retaining anything from after they became a Heroic Spirit.Fate/stay night - Fate route - Day 13: infinity arms - You're my only star The memories of Servants are returned to the Throne after each summoning, their experiences stored as integrated memories.Fate/Grand Order - Artoria Pendragon Interlude: Reasons to Fight 
The Throne of Heroes, having no concept of past or future, contains all of these memories. As the act of a Servant taking in all of a Heroic Spirit's memories would create contradictions, like knowing of events of the very Holy Grail War into which they were summoned, their memories are adjusted to match the time and place into which they are summoned.Fate/strange Fake Volume 3 - Chapter 9: Day 1, Evening "A Horse Not Yet Pale; Mud Yet Firm" 
The Throne also adjusts knowledge and memories according to the world in which they are summoned, to avoid the Servant being confused by multiple sets of memories. Gilgamesh in Fate/strange Fake speculates that, "It may be a desperate measure on the part of the Throne to curb the world's contradictions, even if only slightly."
The Chaldea system of summoning is an exception that allows for Servants to remember past summonings or retain memories.Fate/Grand Order - Hassan of Serenity Interlude: That's Why I'm Going to Die Here, As Myself Within Chaldea, the storage of Saint Graphs allows for defeated Servants to be resummoned with all their memories from Chaldea, but certain circumstances can potentially destroy those memories.Fate/Grand Order: Epic of Remnant - Salem: The Forbidden Advent Garden - Section 7: Sixth KnotFate/Grand Order: Epic of Remnant - Salem: The Forbidden Advent Garden - Epilogue: Chaldea 
Memories formed in Singularities are also more easily remembered. Trisha Fellows, who studied Heroic Spirits, theorizes that Reality Marbles, along with Singularities, may allow Servants to keep memories of their summonings.Lord El-Melloi II Case Files Volume 4: case. Mystic Eyes collection train (Upper) - Chapter 2 Part 4 
Certain circumstances can also allow certain Servants to bypass the system. Artoria Pendragon's unique circumstances cause her to remember everything she experiences in chronological order. Kundry, due to the circumstances of having been reincarnated multiple times before becoming a Heroic Spirit, remembers all of her summonings.Fate/Requiem Volume 1: The Boy Among the Stars - Prologue Gilgamesh, while not naturally retaining memories, can bypass the restriction by utilizing his clairvoyance to see into other worlds.
Differing from those who do retain memories, while Francesca Prelati is a still existing version of the Heroic Spirit François Prelati, Francois only remembers up until he was first executed when summoned as a Servant. Should Hassan of Serenity ever fall in love during a summoning, those memories will be sealed within the Throne of Heroes, making it so that particular version will never be summoned again, even in the case of being summoned into the Chaldea system.
===Saint Graph===
The , or , of a Servant is the core of a Servant's existence, described as "their center, their heart, their CPU" that dictates their every function.Fate/Requiem Volume 1: The Boy Among the Stars - Chapter 5 It differs from the Spiritual Core acting as the foundation of the Servant container.
Within Chaldea Security Organization, they are able to store the Saint Graphs of Servants to allow for their quick resummoning with their memories intact.
===Heroic Spirit Possession===
 is the process of a Heroic Spirit fusing with a human in some capacity. It is possible for a Servant to possess a human, fuse with a human to become a Demi-Servant, and for a human to act as a vessel for the summoning of a Heroic Spirit that lacks a body of its own or possesses Divinity too high to manifest directly to become a Pseudo-Servant. 
Normally the Souls of Heroic Spirits would overwhelm those of humans, making it impossible for them to intermix and grant a human the powers of the Heroic Spirit. Pure souls like those of Homunculi can have a better time accepting their power and withstanding transformation of the flesh. The act of a Heroic Spirit possessing a human for even a single second can be called a miracle in itself.Fate/Apocrypha Volume 2: Round Dance of Black / Festival of Red - Chapter 3
*The Greater Grail is able to make the process work for Jeanne d'Arc by searching for a match with a compatible physical build, spiritual build, personality, and Magical Energy. The possession seals the target's former personality and spiritually installs the Heroic Spirit. After receiving clearance from the host personality, it performs a "cross-domain base anatomy backup" to be able to restore the target even if Ruler is killed. It adapts the physical and spiritual build, grants the Class Skills, grants knowledge of Heroic Spirits and the modern era, and inputs other required data. Overwriting and merging with the target's body and personality, Ruler notes having most of the target's memories. Rather than two personalities in one body, it is more that they merged into one.
*Through an intermediary, like a part of a Heroic Spirit's body or a related Catalyst implanted into someone's body, it can be possible to call down the Heroic Spirit directly from the Throne of Heroes to inhabit their body. The process requires something of great power like a Command Spell, and the transformation will only last a few minutes. Due to possessing Siegfried's heart, his soul, and through special Command Spells, Sieg is able to act as a shell for the body of Siegfried, retaining his own personality while being able to utilize Siegfried's abilities.
*In the case of Pseudo-Servants, a human whose soul is sufficiently close to the Heroic Spirit in terms of both personality and characteristics is selected and initially summoned, followed by the Heroic Spirit that will inhabit the human body. The result of the possession is a being with a personality similar to that of a combination of both the Heroic Spirit and the vessel, with the potential of unconsciously inheriting the vessel's memories. In general, the Heroic Spirit's personality and mind is dominant but there are exceptions in cases where the vessel has an unusually strong will or if the Spirit is willing to allow the vessel's personality to maintain control.
*The Demi-Servant process is only possible with humans that have been genetically engineered from birth for the sole purpose of being compatible with the merger process. Even then, the process is dangerous for both parties and has a minimal chance of success. Only a handful of attempts at creating Demi-Servants have been recorded, and of them only one was ultimately successful.Fate/Grand Order - Camelot: The Sacred Round Table Realm - Prelude
===Effects on the Master===
Some Servants can share their characteristics with their Master. 
*Mash Kyrielight, a Demi-Servant of Galahad, grants her Master, Ritsuka Fujimaru, a resistance to poison through her Noble Phantasm, Lord Camelot.Fate/Grand Order - Camelot: The Sacred Round Table Realm - Section 9: Flower of Poison, Blade of Iron
*Through the usage of Avalon as a Master's Noble Phantasm, Artoria Pendragon's Magical Energy can act as a catalyst to imbue the effects of the sheath upon the Master. Upon learning of Shirou's healing, Rin incorrectly assumes Shirou Emiya's healing is a byproduct of the contract due to not knowing of the existence of Avalon.Fate/stay night - Heaven's Feel route - Day 4: Avenger - Rin's Treatment
*There is a known case of a Servant able to share a physical body with their Master. This causes the Master to become close to an immortal existence for the duration of the Holy Grail War by not being able to die until the Servant dies, but it does not increase their power to the point where they would be able to fight an existence greater than an Assassin-class Servant.
*Jack the Ripper possesses the capacity to possess the body of their Master when summoned in a class other than Berserker.
==Variations==
===Capsule Servant===
===Class Card===
===Demi-Servant===
===Grand Servant===
===Heroic Spirit Swordmaster===
HSSM.png|Caster, Saber, Berserker, Rider.
Douman altering Inshun's Core.jpg|Douman altering Inshun's core.
Inshun about to be turn into a Heroic Spirit Swordsmaster.jpg|Inshun about to be turn into a Heroic Spirit Swordsmaster.
 are modified beings present in the Shimosa Singularity. Originally regular Heroic Spirits, they were altered by Ashiya Douman, who cast the on them, greatly increasing their power and granting them regeneration and Skills similar to Mad Enhancement and Presence Concealment. 
They are nothing more than walking corpses that have lost their humanity. According to Caster of Limbo, only Senji Muramasa's finest katana, Myoujingiri Muramasa, can wound them. Later on, Fuuma Kotarou was also shown to be able to hurt them with his kunai, after he had absorbed Katou Danzou's Magical Energy.Fate/Grand Order: Epic of Remnant - Shimosa Province: The Stage of Rivers of Blood and Mountains of Corpses - Section 14 Ultima Cantica: The Stage of Carnage, Onriedo (Middle)
They are also capable of casting a spell similar to a Reality Marble of a field of corpses where the loser's soul will be consumed.
Members:
Cursed Name 	True Name 	Karma
Saber of Empireo 	Yagyū Munenori 	The All-Severing
Lancer of Purgatorio 	Houzouin Inshun 	The All-Piercing
Archer of Inferno 	Tomoe Gozen 	The All-Burning
Assassin of Paraiso 	Mochizuki Chiyome 	The All-Cursing
Berserker of Saṃghāta Hell	Shuten-douji 	The All-Melting
Rider of Kālasūtra Hell 	Minamoto-no-Raikou	The All-Purging
Caster of Limbo 	Ashiya Douman 	The All-Ridiculing
===Living Servant===
Servants summoned with a living body. Because many Heroic Spirits within the Throne of Heroes are only recorded after their death, their summoned form is a pure simulation that isn't classified as "alive", so actually being summoned with a living component is a rarity. This typically appears in Pseudo-Servants manifesting through a pre-existing human or a Homunculus prepared for them, but there are a few cases where the Throne has recorded a living being, and in rare cases they were recorded entirely as themselves without any special additions. While no less powerful than an ordinary Servant, they are susceptible to things that an ordinary Servant wouldn't be, such as hunger and exhaustion.
List of known Living Servants:
*Mash Kyrielight - A live human implanted with the Saint Graph of Galahad at birth.
*Senji Muramasa - A Pseudo-Servant using Shirou Emiya as a vessel.
*Ishtar - A Pseudo-Servant using Rin Tohsaka as a vessel. (Ereshkigal, though also possessing Rin, is not counted as alive.)
*Astraea - A Pseudo-Servant using Luviagelita Edelfelt as a vessel, manifested by Zhuge Liang's Chu Shi Biao Noble Phantasm calling upon Waver's allies.
*Jaguar Man - A Pseudo-Servant using Taiga Fujimura as a vessel.
*Parvati/Durga - Pseudo-Servants using Sakura Matou as a vessel. (Kama, though also possessing Sakura, is not counted as alive.)
*Amour - A Pseudo-Servant using Caren Hortensia as a vessel.
*Manannán mac Lir - A Pseudo-Servant using Bazett Fraga McRemitz as a vessel.
*Illyasviel von Einzbern (Fate/kaleid) - Recorded as herself, having split from the original following an unconscious wish to aid Chaldea as she returned to her own world after their shared adventure. (Sitonai, who uses Fate/stay night's Illyasviel von Einzbern as a vessel, is not counted as alive due that Illyasviel having already died.)
*Miyu Edelfelt - Recorded as herself, having split from the original following an unconscious wish to aid Chaldea as she returned to her own world after their shared adventure.
*Chloe von Einzbern - Recorded as herself, having split from the original following an unconscious wish to aid Chaldea as she returned to her own world after their shared adventure.
*Zhuge Liang - A Pseudo-Servant using Waver Velvet as a vessel.
*Sima Yi - A Pseudo-Servant using Reines El-Melloi Archisorte as a vessel, manifested by Zhuge Liang's Chu Shi Biao Noble Phantasm calling upon Waver's allies.
*Gray (Assassin) - Recorded as herself, manifested by Zhuge Liang's Chu Shi Biao Noble Phantasm calling upon Waver's allies.
*Shiki Ryougi (Assassin) - Recorded as herself, being trapped in a dream and split off from the original to join Chaldea when she woke, as well as meeting the requirements of becoming a Heroic Spirit by being an urban legend.
*Fujino Asagami - Recorded as herself, meeting the requirements of becoming a Heroic Spirit by being an urban legend.
*Erice Utsumi (Lancer) - Not recorded, but physically present due to being born part-Servant.
*Ganesha - A Pseudo-Servant using Jinako Carigiri as a vessel, selected for the purpose by BB.
*Tezcatlipoca - A Pseudo-Servant using a human body he built from scratch as a vessel.
*Soujuurou Shizuki - Recorded as himself, summoned in a Singularity during extraordinary circumstances when he was both dead and alive.
*Alice Kuonji - Recorded as herself, having formed a bond with Chaldea during a Singularity and powerful enough to qualify as a Servant on her own merits.
*Aoko Aozaki - Recorded as herself, having formed a bond with Chaldea during a Singularity and powerful enough to qualify as a Servant on her own merits.
*Azumi-no-isora - A Pseudo-Servant using Hibiki Hibino, Chikagi Katsuragi, and Mr. Cellphone as a tandem vessel.
*Ciel - Recorded as herself, her personality having been merged with her Servant Universe counterpart.
===High-Servant===
===Pseudo-Servant===
===Servant Universe Servant===
Inhabitants of a parallel world in which all living beings have become Servants.
===Shadow Servant===
 are a variety of Servant that is incomplete, degraded, or false. 
*The FATE system of Chaldea allows for its Masters, such as Ritsuka Fujimaru, to summon Shadow Servants to assist in battle when in a Singularity.Fate/Grand Order -turas réalta- - Chapter 47: "Fifth Singularity Part 8" These Shadow Servants are false copies created from their residual Spiritual Foundation. Ritsuka Fujimaru is the only one seen using this ability and is still able to summon Shadow Servants even when cut-off from Chaldea. So far it is unknown if they posses this ability because they are the Master of Chaldea or if it's their own ability.
*Within the Moon Cell, Karl der Große creates Shadow Servants with the residual energy a Servant's Spirit Core leaves at the location of their summoning.
*The term can refer to Servants that manifest in any manner different from their normal form, such as the summoner lacking Magical Energy or the summoning circle being insufficient.
*Blackening Servants can leave them in a state of being Shadow Servants.
*Remnants of a destroyed Heroic Spirit's Spirit Origin can sometimes be attracted to sources of Magical Energy and grudges instead of returning to the Throne of Heroes. If this occurs, the broken Spirit Origin will reconstitute into a Shadow Servant.
*The Seven Fake Heroic Spirits created by Jeanne Alter are similar in nature.
===Solo Servant===
 are Servants summoned by the Moon Cell after the formal end of the Moon Holy Grail War in Fate/EXTELLA. They exist independently without the need for a Master.
===Stray Servant===
 is a term for Servants who were summoned without a Master or lost their Master. For those in a normal Holy Grail War, they can last between several hours and several days depending on their abilities; they can supplement themselves via mana transfer, but require an anchor to exist for longer than that. Servants that possess the Independent Action Skill, usually found on the Archer class, typically last the longest. Stray Servants appearing in the Grand Orders are summoned by the Counter Force and are able to exist without a Master due to the unusual conditions inherent in Singularities and Lostbelts.
===Top Servant===
The seven are Heroic Spirits hand-picked by the Moon Cell for their exemplary strength, widely considered to be the best and the strongest on SE.RA.PH. These are "Heroes among Heroes" known throughout the world for their famed exploits. These champions are summoned as special classes separate from the seven standard classes. Normally, they exist only to protect the Moon Cell. In Fate/EXTELLA, they are summoned to combat the Umbral Star, and prevent the awakening of Velber 02. In Fate/EXTELLA LINK, their task is to stop Karl der Große's Oraclization.Fate/EXTELLA LINK - Day 5: Duel 
Leonardo da Vinci states that even at full power, a Top Servant's Noble Phantasm almost certainly couldn't break an entire planet apart. Even if an Anti-Planet Noble Phantasm existed, on paper, it wouldn't be enough to destroy the Earth due to the Counter Force.Fate/Grand Order: Epic of Remnant - Shinjuku Subcategory Singularity: Section 9 Transforming Vagabond
====Current Top Servants====
*Arjuna
*Artoria Pendragon: She is referred to as the ultimate doomsday device summoned by the Moon Cell to cut down and kill Altera with Excalibur should she become too much to handle.
*Gilgamesh: Even by Top Servant standards, Hakuno Kishinami states that Gilgamesh is incomparable. He came from the Far Side to the Near Side of the Moon without being summoned. A feat that according to Jeanne d'Arc is impossible even for a Top Servant.
*Iskandar: When the Moon Cell sensed that Altera had been released, it summoned Iskandar to take her down. However, being unaccustomed to fighting on SE.RA.PH, with all its subtle differences to the Earth he lived and died on, he approached the fight as a kind of warm-up, and thus, he lost. Although Altera then declared that his life belongs to her, and forced him to join her army, she understands that her victory over Iskandar was a matter of circumstance, and that they are evenly matched in terms of strength.
*Karna: Hakuno Kishinami regards him as a strong hero even among Top Servant standards.Fate/EXTELLA LINK - Day 6: The St. Metropolita, East GateFate/EXTELLA LINK - Day 6: The St. Metropolita, West Gate
*Jeanne d'Arc: She is the Ruler summoned by the Moon Cell. When Altera defeated Iskandar, the Moon Cell fell into panic and summoned Jeanne d'Arc along with another Top Servant to defeat her this time.Fate/EXTELLA - Dawn Arc; Chapter 2: The Ancient Contract: Mare Carcer, the Titan's Dark Tomb
*Scáthach: She is summoned in reaction to Karl der Große causing trouble in SE.RA.PH. Despite her being "Top Lancer", when she attempted to kill him, she ended up under his Oraclization spell. This doesn't quite mean that she lost, but rather, that she was compelled to give him her blessing, likely as part of his assimilation.
Just an army formed by three Top Servants; Iskandar, Gilgamesh, and Jeanne d'Arc, and commanded by Altera were so strong, that Cú Chulainn states that even if Nero Claudius' and Tamamo-no-Mae's own armies joined forces, making a group formed by; Karna, Gawain, Lu Bu, No Name, Li Shuwen, Medusa, along with their two leaders and Cú himself, they wouldn't have much of a chance at beating them head on. Being amongst warriors, having been through hundreds of battles, and being regarded as a really powerful Servant, Cú doesn't say this lightly. No Name states that the Servants that Cú saw are Top Servants without any doubt, and they are even elite by that standard. He claims that they are easily on par with Karna in terms of military strength, and that there are at least two of them.Fate/EXTELLA - Golden Poem Arc; Chapter 4: Not for Destruction nor Conquest -Mare Origo, Stormy Sea Palace- 
Despite their combined strength, Hakuno Kishinami states that compared to Sefar's scream, Altera's army is nothing.Fate/EXTELLA - Flame Poem Arc; Final Chapter: Titan in the Dark -???- This is even ignoring the fact that Sefar was in her "hatchling" state, and that the more she destroys, the bigger and stronger she will get.Fate/EXTELLA - Orchid Words Arc; Chapter 5: Extella of the Umbral Star II -Mare Carcer, the Titan's Dark Tomb-
====Other====
*Altera: She is stated to be evenly matched with Iskandar in terms of strength. She is later shown fighting evenly with Jeanne d'Arc, and even Gilgamesh, albeit with support of Hakuno Kishinami.
*Artoria Pendragon AlterFate/Grand Order: Epic of Remnant - Shinjuku, Return of the Wolf King
*Caenis: According to Leonardo da Vinci, Caenis' Saint Graph is on the level of a Top Servant or a Divine Spirit.Fate/Grand Order: Cosmos in the Lostbelt - Olympus: Interstellar Mountainous City - Section 4: Thou Art the Harvest that Reaps the Stars (I)
*Cerberus (Lostbelt): Cerberu's destructive power and durability are stated to be easily on par with that of a Top Servant.Fate/Grand Order: Cosmos in the Lostbelt - Atlantis: Ancient Ocean of the Dreadnought Gods, Section 1: Crisis after Crisis
*Charlemagne: After first meeting him, Hakuno Kishinami states that Charlemagne is a strong Heroic Spirit and that he might even be on par with the Top Servants.Fate/EXTELLA LINK - Day 1: Prologue
*Cú Chulainn (Lancer): Although Cú Chulainn is not among the seven Top Servants during Fate/EXTELLA and Fate/EXTELLA LINK, he is referred as such in the Fate/EXTRA Last Encore CD Drama.
*Cú Chulainn (Caster): Mash Kyrielight speculates that Cú Chulainn is a Top Servant.Fate/Grand Order - Fuyuki, Shadow Servant
*Elizabeth Void: Elizabeth Void claims to be an "abominable Top Servant."
*Karl der Große: Scáthach states that Rex Magnus is a being even greater than the Top Servants.Fate/EXTELLA LINK - Day 4: Reinforcing The Ranks
*Kriemhild (Empowered by 2 Holy Grails): Kriemhild empowered by two grails is on par with a Top Servant and her parameters surpass even Siegfried's.Fate/Grand Order: Cosmos in the Lostbelt - Traum: Realm of the Thanatos Impulse, Section 20: Vengeance Unrequited
*Mash Kyrielight: Mash by the time of the South American Lostbelt is approaching the level of a Top Servant.Fate/Grand Order: Cosmos in the Lostbelt - Nahui Mictlan, To the Land of the Dead
*Parvati: Parvati claims that she's probably a Top Servant.Fate/Grand Order - Parvat's Valentine
*Romulus: Romulus is a Heroic Spirit of the Lancer class, and he would no doubt be a Top Servant if he were to appear on SE.RA.PH.
===Udon Servant===
 are Servants created in the parody work Learn with Manga! FGO. They are created from mixing a Spirit, Holy Grail Mud, and . They start out as small, sentient blob of udon dough, eventually developing into Servants.Learn More with Manga! FGO - Episode 44: You ARE the Father!Learn More with Manga! FGO - Episode 46: Birth
==Summoning==
Masters summon their Servants at the start of each ritual. Different systems possess different means of facilitating the summoning.
===Summoning without a system===
It is possible to utilize Heroic Spirit summoning without establishing a dedicated system around a Holy Grail or other catalyst. Gilgamesh utilizes what he calls "real Heroic Spirit summoning" in the Babylonia Singularity, saying it is unlike that of Chaldea. Merlin notes that the timeframe being that of the end of the Age of Gods makes it easier to summon them than in modern times, saying that neither he or Gilgamesh would find it easy to summon them in the Magecraft-diminished 21st Century.Fate/Grand Order - Babylonia: The Absolute Frontline in the War Against the Demonic Beasts - Section 3: Gilgamesh's Calamity
Without Chaldea's system, Sion Eltnam Sokaris summons the Captain by forcibly mixing two Saint Graphs together.Fate/Grand Order: Cosmos in the Lostbelt - SIN: Land of Unified Knowledge - Intro
===Fuyuki-based systems===
Under systems based upon the Fuyuki ritual, there are several factors that determine which Heroic Spirit the Master will summon. It is general that the seven participating Masters are all Magi due to requiring basic Magecraft to properly perform the summoning, but the quality of the Masters does not matter so long as the most basic summoning requirements are met to fill out the Holy Grail's requirement of seven Servants being manifested. Upon selecting the Masters, the Holy Grail distributes the massive amount of Magical Energy it has gathered among them to facilitate the process.Fate/Zero Volume 1: The Untold Story of the Fourth Holy Grail War - Prologue II: 3 years ago
Performing a Summoning Ritual facilitates the process in which the copy of the Heroic Spirit is brought into the chosen class container. Most Masters will prepare a Catalyst with which to summon their desired Heroic Spirit, but it is not absolutely necessary. Without a specific artifact, the Holy Grail will, rather than basing it on their power, choose a Servant based upon similarities to the summoner's own nature.Fate/Zero Volume 1: The Untold Story of the Fourth Holy Grail War - Act 2 Part 3 -222:24:48 
When choosing based on power with a Catalyst, bad compatibility may make forming a bond impossible, bringing about hardships without being able to have faith in each other. When allowing for a good affinity, it may bring forth a weaker Servant, and it is possible that a single mistake could rouse bad feelings between them due to the resemblance in their personalities being so close. 
It is also possible to predetermine the Class of the Servant through the alteration of the summoning incantations, though this is only limited to the Assassin and Berserker Classes.Fate/strange Fake Volume 1 - Prologue III: "Assassin"
====Summoning Ritual====
Fuyuki Servant Summon Circle.jpg|Magic circle used to summon a Servant: ring of purification around a ring of four purging circles, surrounding a ward of summoning.
Rin carefully starting the ritual.png|Rin preparing the Magic Circle.
Rin summoning a Servant.gif|Rin performing the Summoning Ritual.
Shirou summons Saber.gif|Shirou unintentionally summoning Saber using Irisviel's Magic Circle.
While the are generally specific, their main goal in the Holy Grail War system is to act as a precaution to create a bond with a perfect, reliable Servant. They really only require a summoning circle, even if unskilled: a ring of purification carved around a ring of four purging circles, surrounding a ward of summoning. 
Catalysts can bypass the need of chanting a spell, but doing so can create aberrations like Gilles de Rais being placed into a normally unsuitable class, or King Arthur having a bad connection with her Master that does not allow her to receive Magical Energy through normal methods. 
Flat Escardos is a complete anomaly in that he is able to complete the ritual without even meaning to summon a Servant, simply by "fiddling" with the Magical Energy in the area. The connection to his Servant is spontaneously established, and it is unknown if it can be called a miracle, luck, or an achievement of his own latent potential. 
It is possible to specify in the Summoning Ritual that the Servant be placed under the Berserker class for those familiar with the workings of the Holy Grail System. By adding in a specific line, Zouken Matou and the Einzbern family, as members of the Three Founding Families, were able to choose this class during the Fourth Holy Grail War and Fifth Holy Grail War respectively.Fate/stay night - Unlimited Blade Works route - Day 13: VS berserker - Interlude 13-2: Winter forest In the Great Holy Grail War, each faction has a Summoning Ritual according to the color they represent.
====Catalyst====
Servant Catalysts.jpg|The catalysts to summon Archer, Saber, and Rider respectively in the Fuyuki Fourth Holy Grail War.
GoBKey.jpg|The spare key to the Gate of Babylon, an alternate catalyst for Gilgamesh.
Rinspendant.png|Rin's pendant that served as Archer EMIYA's catalyst.
Fate Hollow Ataraxia Lancer Earring.JPG|Cú Chulainn's earring, his catalyst.
Round table shard catalyst.jpg|Shard of the Round Table, which a popular catalyst for Knights of the Round Table.
Lindenleaf.png|The bloodstained linden leaf used to summon Siegfried.
Ancientarrow.png|Ancient arrow used to summon Chiron.
BottleofReason.png|Bottle of reason as a catalyst for Astolfo.
BerserkerBlueprints.png|Frankenstein's blueprints for his Creature used for summoning her.
Nobunaga Catalyst (Redline).jpg|An old Oda Clan emblem used for summoning Nobunaga.
Round Table fragment imbedded in Mash's body.png|The Round Table fragment inside Mash's body, a catalyst to summon Galahad and any other Round Table member.
FGOM L Camelot.jpg|Mash's shield used by Chaldea to summon Servants.
 are symbols and holy relics used to attract the desired Heroic Spirit. Requiring something with a connection to the hero, it can be anything from a sword, armor, a talisman, or even their bones. While something like Rin's Pendant is an artifact holding great power on its own, it is unable to help summon a Servant. If the catalyst is one that is particularly weak, or if it is one with a connection to many different Heroic Spirits, the Heroic Spirit among the candidates that has good affinity with the Master will be chosen. Should the summoner lack a catalyst entirely, then the summoner acts as the catalyst themselves. 
Some are those that have only been connected to a single Heroic Spirit, allowing them to be brought forth regardless of affinity with the Master. In a rare case, EMIYA's catalyst is not the pendant Rin Tohsaka owns in the present. EMIYA is instead a case where he holds a catalyst with a connection to his summoner.
Catalysts are extremely valuable, and it can take much effort depending on the Servant the Master wishes to summon. The Mage's Association, having been collecting the esoterica of thaumaturgy for generations since ancient times, has a grand number of catalysts "numbering among the stars." Kayneth El-Melloi Archibald is able to order a relic from Macedonia, while the Einzberns have to specifically have Avalon excavated from Cornwall.Fate/Zero Volume 1: The Untold Story of the Fourth Holy Grail War - Act 1 Part 2 -282:14:28 
Within the Fate/Apocrypha world, the spread of the Holy Grail War system means many catalysts quickly disappearing over seventy years and numerous Grail Wars. Especially those of Gilgamesh, King Arthur, and Alexander the Great have been scattered and lost over time, and Yggdmillennia specifically collects desired artifacts over decades to procure enough excellent Heroic Spirits. The Association still has enough even then to easily provide seven catalysts to their Red Faction on a short notice.
True Name 	Catalyst 	War
Agravain 	Shard of the Round Table 	None (Catalyst example)
Angra Mainyu 	Avesta, an old scripture and foreign folkloreFate/stay night- Heaven's Feel route - Day 15: limited. - Truth - Antihero Angra ManyuFate/hollow ataraxia 	Third Fuyuki Holy Grail War
Artoria Pendragon 	Avalon 	Fourth Fuyuki Holy Grail WarFifth Fuyuki Holy Grail War
Asclepius 	Remnant of the ArgoFate/Apocrypha Volume 1: Apocrypha: Great Holy Grail War - Chapter 1 	None (Catalyst example)
Astolfo 	Bottle of reasonFate/Grand Order - Astolfo (Saber) Interlude: Chaotic Hustle and Bustle During a New Moon 	Great Holy Grail War
Atalanta 	Remnant of the Argo 	None (Catalyst example)
Bedivere 	Shard of the Round Table 	None (Catalyst example)
Brynhildr 	Piece of debris from an old carbonized buildingFate/Prototype: Fragments of Sky Silver Volume 4: Dear My Hero Arc - Act 2 Part 4 	Tokyo Holy Grail War
Charlotte Corday 	Blood of Charles-Henri Sanson and Chevalier d'Eon(Contemporaries from the same age)Fate/Grand Order: Cosmos in the Lostbelt - Atlantis: Ocean in the Age of Titans - Section 17: For A Bloody Sunset 	Grand Order (Atlantic Lostbelt)
Chiron 	Ancient arrow blackened by blood 	Great Holy Grail War
Cú Chulainn 	Jewel crafted into earrings(Engraved with original rune inscribed by Chulainn) 	Fifth Fuyuki Holy Grail War
Diarmuid Ua Duibhne 	Unknown artifact prepared by Kayneth El-Melloi ArchibaldFate/Zero Volume 1: The Untold Story of the Fourth Holy Grail War - Act 4 Part 4 -153:41:36 	Fourth Fuyuki Holy Grail War
Edward Teach 	Blackbeard's treasureFate/strange Fake Volume 3 - Interlude: "The Passion of the Nameless Soldier" 	None (Catalyst example)
Enkidu 	WolfFate/strange Fake Volume 1 - Prologue VI: "Lancer" 	True and False Holy Grail Wars
EMIYA 	Rin's Pendant 	Fifth Fuyuki Holy Grail War
François Prelati 	Francesca Prelati (Still living self)Fate/strange Fake Volume 3 - Prologue IX: "The Star Performers' Feast (Part 2)" 	True and False Holy Grail Wars
Frankenstein 	Frankenstein's blueprints 	Great Holy Grail War
Gaheris 	Shard of the Round Table 	None (Catalyst example)
Galahad Alter 	Galahad's sword belt 	"After" the Holy Grail War
Gareth 	Shard of the Round Table 	None (Catalyst example)
Gawain 	Shard of the Round Table 	None (Catalyst example)
Gilgamesh 	Fossil of the first skin shed by a snakeFate/Zero Volume 1: The Untold Story of the Fourth Holy Grail War - Act 1 Part 5 - 270:08:57 	Fourth Fuyuki Holy Grail War
Gilgamesh 	Gate of Babylon spare keyFate/strange Fake Volume 1 - Prologue I: "Archer" 	True and False Holy Grail Wars
Gilles de Rais 	Francesca Prelati (Friend from life) 	None (Catalyst example)
Hassan-i-Sabbah 	The Assassin class itself(Hassan is the origin of the word "assassin") 	Several
Hassan-i-Sabbah 	Flesh of an Assassin class servant 	Fifth Fuyuki Holy Grail War
Hector 	Achilles(Used his own existence to summon Hector)Fate/Grand Order: Cosmos in the Lostbelt - Atlantis: Ocean in the Age of Titans - Section 25: The Hunter Who Shot Down A Goddess (Below) 	Grand Order (Atlantic Lostbelt)
Heracles 	Remnant of the Argo 	None (Catalyst example)
Heracles (Archer) 	Unknown artifact prepared by FrancescaFate/strange Fake Volume 3 - Prologue VIII: "The Star Performers' Feast (Part 1)" 	True and False Holy Grail Wars
Heracles (Berserker) 	Axe-sword(Slab of rock from a temple of Heracles) 	Fifth Fuyuki Holy Grail War
Hippolyta 	Combat 	True and False Holy Grail Wars
Humbaba 	Mazda lampFate/strange Fake Volume 7 - Chapter 22: "The First and Last Breather Day" 	True and False Holy Grail Wars
Iskandar 	Gordian KnotFate/Grand Order - An Old Spider Spins Webs of Memory - Section 2: Triangle Gang 	None (Catalyst example)
Iskandar 	Piece of Iskandar's mantle 	Fourth Fuyuki Holy Grail WarFate/Zero Volume 1: The Untold Story of the Fourth Holy Grail War - Act 1 Part 1 -285:42:56
Iskandar's Shadow 	Piece of Iskandar's mantle 	None (Case Files)Lord El-Melloi II Case Files Volume 4: case. Mystic Eyes collection train (Upper)
Jack the Ripper (Assassin) 	Jack the Ripper's knivesFate/Apocrypha Act 1: Unbirth 	Great Holy Grail War
Jack the Ripper (Berserker) 	Replica Jack the Ripper novelty knifeFate/strange Fake Volume 1 - Prologue II: "Berserker" (believed)Thia EscardosFate/strange Fake Volume 7 - Chapter 21: Day 3 "Beings Created in Man's Own Image" (actual)	True and False Holy Grail Wars
Jason 	Remnant of the Argo 	None (Catalyst example)
Jiao 	Godfelling CrossbowFate/strange Fake Volume 6 - Chapter 19: "As Dream and Reality are Both Illusion II" 	True and False Holy Grail Wars
Kay 	Shard of the Round Table 	None (Catalyst example)
Koga Saburo 	Stone fragment from Suwa Grand ShrineFate/Samurai Remnant - Digression: With a Staff and a Coin 	Waxing Moon Ritual
Koyanskaya of Light 	Her lipstick which was held by Goredolf MusikFate/Grand Order: Cosmos in the Lostbelt - Nahui Mictlan, Section 7 	South American Lostbelt
Lancelot 	Shard of the Round Table 	None (Catalyst example)
Lancelot (Berserker) 	Unknown artifact prepared by ZoukenFate/Zero Anime - Episode 1: "The Summoning of Heroes" 	Fourth Fuyuki Holy Grail War
Medea 	Remnant of the Argo 	None (Catalyst example)
Medea 	Literature from with ties to Medea. 	Fifth Fuyuki Holy Grail War
Medusa (Rider) 	Mirror dug up from a temple in (Item with ties to an old Earth Goddess of Greece) 	Fifth Fuyuki Holy Grail War
Mordred 	Shard of the Round Table 	Great Holy Grail War
Mori Nagayoshi 	Katana mistakenly thought to belong to Miyamoto MusashiFate/type Redline - Chapter 14.3 	ICHGSS (Redline)
Oda Nobunaga 	Maedate helmet crestFate/type Redline - Chapter 15.1 	ICHGSS (Redline)
Okita Souji 	KatanaFate/KOHA-ACE - Chapter 2 	ICHGSS (F/KA)
Okita Souji 	Light novel from the futureFate/type Redline - Chapter 1 	ICHGSS (Redline)
Ozymandias 	Nefertari's necklaceFate/Prototype: Fragments of Sky Silver Volume 3: Beautiful Mind Arc - Act 4 Part 1 	Tokyo Holy Grail War
Ozymandias 	Remains of war chariot 	None (Catalyst example)
Ozymandias 	Bow(Used in the decisive battle against the King) 	None (Catalyst example)
Ozymandias 	Epitaph of the contract exchanged with Hittites 	None (Catalyst example)
Ozymandias 	Item from own mummified body 	None (Catalyst example)
Palamedes 	Shard of the Round Table 	None (Catalyst example)
Paracelsus 	Paracelsus' flask 	None (Catalyst example)
Percival 	Shard of the Round Table 	None (Catalyst example)
Prince of Lanling 	Hinako Akuta's friendship with him in lifeFate/Grand Order: Cosmos in the Lostbelt - SIN: Land of Unified Knowledge - Section 11: The Poppy Girl 	Grand Order (Chinese Lostbelt)
Ptolemy 	Mechanical bird with copy of his mind.The Adventures of Lord El-Melloi II Volume 5: Legacy of the Alchemist (Lower) - Chapter 5 	None (Adventures)The Adventures of Lord El-Melloi II Volume 5: Legacy of the Alchemist (Lower)
Qin Shi Huang (Proper Human History)	Godfelling CrossbowFate/strange Fake Volume 1 - Prologue V: "Rider" 	None (Catalyst example)
Richard I 	Box which contained AvalonFate/strange Fake Volume 3 - Chapter 8: Day 1, Afternoon (2) "The Wandering King's Rock'n'Roll" 	True and False Holy Grail Wars
Sasaki Kojirou 	Ryuudou Temple mountain gate. 	Fifth Fuyuki Holy Grail War
Siegfried 	Bloodstained linden leafLord El-Melloi II Case Files Volume 3: case. Twin Towers of Iselma (Lower) - Chapter 3 Part 2 	Great Holy Grail War
Solomon 	One of Solomon's Rings sent to the futureFate/Grand Order - Solomon: The Grand Time Temple - Section 12: The Future 	None (Chaldea)
Spartacus 	Spartacus' manacles 	None (Catalyst example)
Tristan 	Shard of the Round Table 	None (Catalyst example)
Various 	Remnant of the Argo 	None (Catalyst example)
Various 	, the symbol of the 	None (Catalyst example)
All known Servants 	Round Table, built into Mash Kyrielight's shield and used as the conceptual "place where heroes gather" 	Grand Order
===Moon Cell===
The Moon Cell summons Servants for Masters through compatiblity.
===Chaldea (FATE System)===
Mash Demi Servant Experiment.jpg|Galahad about to be summoned into Mash Kyrielight's body.
Chaldea summoning Galahad (anime).gif|thumb|Galahad fusing with Mash's body during the summoning.
Ritsuka summons Edmond Dantes (Cloverworks).gif|Ritsuka using his Mystic Code and Lord Camelot to summon Edmond Dantes.
Chaldea uses the FATE summoning system created by Marisbury Animusphere. Its foundation is in Galahad's shield Lord Camelot, which was made using the Round Table and therefore represents "a place where heroes gather". Using that meaning, the shield serves as a catalyst for countless Servants.
Chaldea's summoning system requires both Master and summoned Servant to agree to the summoning.Fate/Grand Order - London: The Death World in the City of Demonic Fog - Prelude 
Due to the Human Order being in disarray and its own unique properties, it allows for the summoning of Divine Spirits, although typically with limitations, such as manifestation in a human body.Fate/Grand Order - Enkidu Interlude: Made by God, Spun by Men, and Returned to Earth
===Ainsworth (Class Cards)===
===Servants summoning Servants===
It is also possible for some Servants to bring forth other Servants under limited conditions with their own abilities and Noble Phantasms. The newly summoned Servants can then participate in the summoning themselves; these "Chain Summonings" will call upon progressively more powerful Servants and can even summon Divine Spirits. 
*Alexander the Great's Ionioi Hetairoi allows for tens of thousands of Servants to be summoned within the Reality Marble. Only one can be summoned outside of it due to the corrective impulses of the World.
*Okita Souji's Flag of Sincerity can summon a small squad of Servants to fight temporarily.
*William Shakespeare's First Folio can bring forth Servants as "characters", but they are weaker than a Caster-class Servant in function.
*Scáthach can summon Servants with her Original Runes, using herself as the catalyst.
*Toyotomi Hideyoshi's Transcendent Dazzling Castle of the Sun can summon a number of his retinue as Servants, but they can only fight outside of the fortress for a brief period due to their energy source being located inside.
*Richard I's Rounds of Lionheart allows for him to bring a small group of Heroic Spirits with him upon his summoning, voluntarily bringing them directly from the Throne of Heroes.
*Jason's Astrapste Argo allows for him to call on his companions, the Argonauts.
===Limitations===
====Anti-Heroes====
Under normal circumstances, the Fuyuki ritual is made for the summoning of only "pure Heroic Spirits", so with the exception of Hassan-i-Sabbah, those who are "mixed spirits" "who only have the aspect of a Heroic Spirit" cannot be summoned. Through the induction of Angra Mainyu into the Grail after the Third Holy Grail War in the main timeline and the alterations made by Darnic Prestone Yggdmillennia in the alternate timeline of the Great Holy Grail War, it becomes possible to summon those with Anti-Hero aspects.Fate/stay night - Unlimited Blade Works route - Day 13: VS berserker - Princess That limitation is not present in other Holy Grail Wars like the Moon Cell Holy Grail War.
====Divine Spirits====
Divine Spirits cannot be summoned normally under most systems. Due to their nature, it is nearly impossible for them to manifest in the current world.
*Fuyuki - Within the Fuyuki system, summoning full Divine Spirits is beyond its ability, and it is said the capability to reproduce phenomena of that level would render the Holy Grail unnecessary in the first place. Only through losing their complete Divinity did Chiron and Brynhildr become existences able to be summoned, and Medusa, more of a Divine Spirit than a Heroic Spirit, became applicable only after her Divinity decreased through becoming a monster. The Einzberns were confident in their ability to circumvent their own system to bring about the God Angra Mainyu, but he was a Heroic Spirit instead.
*Moon Cell - Within the Moon Cell, the recorded Divine Spirits are considered to be non-human Heroic Spirits and stored in its Servant records. Though none are summoned for the proper Holy Grail War, BB creates the Alter Egos from combining several Goddesses into each of them.
*FATE - Under the FATE system, it is possible for Divine Spirits to be summoned, but Dr. Roman explains that such a thing should be impossible. The known examples so far bypass their restrictions by either reducing their own Divinity level to a stable state, possessing a human vessel to become a Pseudo-Servant (e.g. Ishtar, Ereshkigal, and Parvati), manifesting through the Saint Graph of a Heroic Spirit they are closely tied to (as is the case with Orion), or are weak enough to be manifested through the container of a Class (e.g. Stheno and Euryale).
*Class Cards - Under the Class Card system, Julian Ainsworth has encapsulated the power of Magni, the half-giant son of Thor into a Class Card.
*Imperial Holy Grail - Under the system used by the Nazis in the Strange Tales of the Imperial Holy Grail, it is possible to summon Pseudo-Servants, including Divine Spirits, in a limited capacity.
====Eastern Servants====
Within the Fuyuki Holy Grail War system, there is a rule that makes only the summoning of Western Heroic Spirits possible due to the Holy Grail being a Western, Christian concept and that the summoning system was created in the world of Western Magi. Sasaki Kojirou of the Fifth Holy Grail War is a complete aberration in many ways. Other systems like the Moon Cell Holy Grail War have no such restrictions.
====Hassan-i-Sabbah====
Within the Fuyuki Holy Grail War framework, one from the grouping of nineteen Hassan-i-Sabbah will generally be summoned as the Assassin-class Servant due to the very name "Assassin" acting as their catalyst. It is said to be fixed in the system itself that Hassan will always be summoned, but there is a small chance, so low as to be considered nonexistent, that another will answer the summons.Fate/Apocrypha Volume 3: Triumphal Return of the Saint - Chapter 3 
Within the world of Fate/Apocrypha, the Subcategory Holy Grail War led to a proliferation in the number of Hassans summoned, allowing all of their True Names and Noble Phantasms to be documented. Masters eventually began adding additional lines to the summoning incantations and bringing catalysts not associated with Hassan to call upon different Heroic Spirits.
The Moon Holy Grail War and FATE system do not possess this limitation.
==Strength==
Servants have six primary statistics that make up their overall strength:
*: Bodily might in terms of power.
*: How much damage one can withstand.
*: Quickness and speed of reaction.
*: How much Magical Energy can be handled.
*: The quality of one's luck.
*: The strength of the Noble Phantasm one owns. While the ranking will often match their strongest Noble Phantasm, it will sometimes only reflect a secondary Noble Phantasm, or display a ranking higher or lower than their available wares.
Each of the statistics and Skills are translated into specific parameters, reflecting the individual ability of each Servant. They display strength and speed far beyond normal humans, showing in battle displays likened to a "dimension that is completely at odds with the physical laws of this world." Simple hand-to-hand combat between two Servants is enough to wreck a city street in a manner able to be compared to having been carpet-bombed, damaging the ground with only their footfalls, cutting metal with only the backlash caused by their weapons clashing, and tearing away iron from simply brushing against it with weapons.Fate/Zero Volume 1: The Untold Story of the Fourth Holy Grail War - Act 3 Part 4 -154:09:25 The usage of their Noble Phantasms can easily leave an area in complete ruin, some displaying the capability to easily wreck part of a city with minimum usage or even an entire city should enough time pass.
Both their movement speed and dexterity is enough to make them invisible to the human eye, looking like a breeze of wind when running past and only leaving the aftershocks of their attacks to be felt by onlookers.Fate/stay night - Fate route - Day 15: Utopia - Saber, to the church Compared to even a top-class motorcycle like Saber's V-Max able to reach over four hundred kilometers per hour, the dexterity of a Servant places them far above it in both maximum acceleration and speed, and they can rival a jet fighter in speed with proper footwork.Fate/Zero Volume 3: The Scattered Ones - Act 10 Part 5 -84:19:03 
It may be still advantageous to use a motorized vehicle in a pursuit due to it only relying on its fuel rather than using their own Magical Energy while running on foot.Fate/Zero Volume 4: Flames of Purgatory - Act 14 Part 2 -36:48:13 The speed of bullets travelling faster than the speed of sound poses no threat, unable to surpass the speed with which they wield their weapons, and those with greater dexterity can easily deflect them with their weapons.Fate/Zero Volume 4: Flames of Purgatory - Act 16 Part 2 -03:59:48 Not bound by normal logic, they are able to move up the sides of buildings simply by kicking off the sides.
Even the smallest of Servants will have little issue in carrying a person, and Rider, casually copying something out of a comic, is able to lift a vehicle from a construction site to slam down onto her opponents. Even those who are physically weak compared to others like Caster-class Servants show great feats of strength, Gilles de Rais displaying grip strength enough to easily crush a human skull,Fate/Zero Volume 2: The Mad Feast of Kings - Act 6 Part 1 -131:23:03 and Medea severing an arm with a ritualistic dagger unable to normally even be considered lethal to a regular human.Fate/stay night - Fate route - Day 6: BLADE - Missing Ariadne
It should be noted that all Servants, even those of Divine Spirit origins, are still affected and limited by at least some of the laws of physics (including gravity and conservation of mass), unless they have unique abilities to bypass these laws.Fate/Grand Order - Babylonia: Absolute Demonic Front - Section 18: Awakening
===Master's Perspective===
Status1.jpg|Generic version of the vision.
Status2.jpg|Shirou's version of the vision.
Herc_stats_in_anime.png|Rin's version of the vision in the Unlimited Blade Works anime.Fate/stay night [Unlimited Bladeworks] - Episode 2: "The Curtain Rises"
Masters who have made contracts with Servants have the ability to read out the status of a Servant with powers of clairvoyance,Fate/stay night - Fate route - Day 4: Partner - Solo&OnlyFate/stay night - Fate route - Day 4: Partner - Contract EstablishedFate/strange Fake Volume 3 - Chapter 7: Day 1, Afternoon (1) "The Canon of the Demigods" called "Master's Perspective".Fate/Zero Volume 2: The Mad Feast of Kings - Act 5 Part 2 - 149:47:12 
Master's Perspective allows Masters to measure their Servant's abilities and perceive them a way most comprehensible to them. Some classify according to color, and others classify according to animals. Shirou sees Saber's status, and all other Servants, in a way similar to role-playing games' s. Tiné Chelc perceives them as six rivers flowing from a mountain at different speeds. Haruri Borzak sees them as honeycomb patterns.Fate/strange Fake Volume 8 - Chapter 26: "The Age of Gods and the Modern Age <Maturation>"
It is a unique ability granted by the Holy Grail that summoned the Heroic Spirits, so it cannot be used by those without a contract. They can see through the abilities of the other Servants and compare them to those of their own so that they can guide them as efficiently as possible in battle situations. Tokiomi Tohsaka owned a book that provides a similar ability, but it is useless to a full Master. It was passed on to Rin Tohsaka after his death, and she gives it to Shirou Emiya because he lacks a proper connection to Saber. The book itself is blank, but simply looking at a random page gives him an image in his head that allows him to look upon all known statuses of the Servants in the War. Reading the book will give him new details any time he reads it, and Rin says that he will be able to identify Servants from intuition without using the book after he gets used to it. It is reflected in-game as the Servant status screen.
===Factors===
The strength of the summoned Servants depends on various factors. It is ideal if the Servant can wield their original power as a Heroic Spirit, but it is also possible that they can even surpass their original selves in the case of the attribute enhancement from Mad Enhancement of the Berserker class. Servants are not necessarily more powerful than when originally alive, with some lacking certain abilities, having degraded characteristics, or even becoming weaker as confirmed in dialogue regarding Servants such as Sigurd and Solomon.Fate/Grand Order - Sigurd Interlude: With Neither Mass Nor Shape, Yet RealFate/Grand Order - Salomon: The Grand Time Temple - Section 12: The Future 
It is also possible to obtain abilities from Class Skills they did not originally have in life, such as Riding modern vehicles, or have their own attributes strengthened by their classes' natural attributes. 
* - The in which the Servant is summoned and the they receive there are factors that play a role in their strength. The closer they are to the stage of their legend, a geographical boost, and the more that they are known makes them "stronger", bringing them closer to the strength they had in their legend and providing them with more of their equipment displayed in their legend. Depending on the circumstances, it is possible it can bless them with additional Noble Phantasms. The boost from recognition alone is not that large in making a difference in power as when Rin Tohsaka is speculating on Gilgamesh's ability to overwhelm other Servants.Fate/stay night - Unlimited Blade Works route - Day 13: VS berserker - Proposal Land plays a greater factor with Cú Chulainn, Heracles, and King Arthur being three heroes around the same level of strength when summoned in Europe. Each would be strengthened in Europe and benefit most greatly in battle in their home country, though Heracles' fame would allow him to display excellent power throughout all of western Europe. Cú Chulainn, gaining zero influence from not being known as well in Japan, does not fully display his "shining existence" on par with them while in Fuyuki, but would anywhere else in the world. He would obtain several benefits from being summoned in his homeland, Ireland, and outfight Diarmuid Ua Duibhne, who would have an advantage when both are unaffected by the cultural sphere and have other factors at play. Vlad III gains a great boost in Romania, placing him on the same level as those famed heroes, and Semiramis gains her maximum fame while in the confines of the Hanging Gardens of Babylon.
* Magical Energy of the Master - The more powerful the Magical Energy of the Master, the greater the Servant will be able to reach the strength they displayed in their legend. If they cannot provide proper energy or if the Servant lacks a Master for a time, their parameters lower in proportion. If it is a lack of energy, unknown factors will lower parameters and Skills with some Servants, while the Master's way of life may affect others. King Arthur, serving under several different Masters, displays a number of different sets of parameters due to fluctuating levels of energy. Under Shirou Emiya, she receives no energy because his Magical Paths are obstructed and cannot display her full strength. Kiritsugu Emiya is able to supply energy to have her be stronger than when under Shirou, but her luck is affected by his personality due to still not providing enough energy. Rin Tohsaka is an excellent Magus that allows her to unleash her full abilities without being affected. Two Servants who would be balanced differently under other circumstances may find the balance tipped when one has better Master support.
*Container Parameters - Unmodified by the strengths and weaknesses of specific Heroic Spirits, the containers of the seven standard Servant classes of the Fuyuki Grail War possess known base parameters.TECH GIAN February 2004 Issue - Pg. 157 The parameters of the containers has not been shown to affect summoned Servants, allowing for parameters higher and lower than those of the containers. If the hero should be utterly weak to the point of defenselessness like Stheno and Euryale, it is possible for the containers to increase their strength far beyond their regular selves.
Container	Str	End	Agi	Man	Luk
Saber 	A 	B 	B 	C 	D
Archer 	C 	C 	C 	E 	E
Lancer 	B 	C 	A 	D 	E
Rider 	D 	D 	B 	C 	E
Caster 	E 	E 	C 	A 	B
Berserker	C 	D 	D 	E 	E
Assassin 	D 	D 	B 	E 	B
===Strengthening===
====Ascension====
Under the FATE system, it is possible for Servants to undergo , a reform for the Servants to become stronger by coming closer to their "starting point of conception" by providing Flames of Wisdom and magical materials to enhance their Saint Graph. It may even bring about a younger, more inexperienced form without reducing their power as a Servant because it is the "most fitting figure" for them.
Doctor Heartless dubs his ritual to change a Servant into a Divine Spirit , based on the Blackmore Cemetery's ritual to recreate King Arthur combined with the Initiation of the labyrinth Spiritual Tomb of Albion.Lord El-Melloi II's Case Files Volume 10: case. Grand Roll (Lower) - Chapter 3 Part 3
====Form Change====
Fc nero2.png|Nero Claudius.
Form change tamamo.png|Tamamo-no-Mae.
 is an element present in Fate/EXTELLA that allows for Servants to be strengthened in battle, altering their outward appearance and weapons. 
This is only given to the wielders of the Regalia, rings that symbolize the Royal Authority of SE.RA.PH, given to Servants who have won a Moon Cell Holy Grail War.
====Mythological Mystic Code====
Within the Moon Cell, it is possible to unlock the Origin of a Servant, granting them great power on the same scale as the Ten Crowns possessed by BB. This is known as the . As a result of analyizing the data from the Ten Crowns the protagonists gained from Robin Hood, Rani VIII and Rin Tohsaka acquired rights to access "original power" from the Moon Cell. The Ten Crowns is the beginning of human history, the dawning of the light of civilization. To summarize, it is the power of the Origin that began the human genome. It is something all human beings hold within them. By entering the Servant's virtual mind/body to access the Heroic Spirit core directly, it is possible for the Master to reach the Heroic Spirit's Root that the Moon Cell had sealed away, and release the Mythological Mystic Code. This is an origin that even the person themselves can never know. The farthest point that became the cause of the birth of their very being. In other words, zero. 
By removing their limiter, the Servant acquires the same level of "fundamental truth" as BB due to now being able to raise their spiritual rank according to their will. With this power up alone, the student council estimated Hakuno's Servants, be it Nero Claudius, No Name, Tamamo-no-Mae or Gilgamesh depending on the player's preferences, would have a 0.9999% chance of victory against BB. In order to help them and Hakuno in the final battle, even if just a little, Rin Tohsaka redirected all the power that had been previously protecting the school building to stop BB and the Alter Egos from entering, and all the resources that comprised the building to them, to further empower them. By the point they finally faced BB, their power had been increased to the same rank as hers. Thus, it became possible to defeat her by severing her link to the Moon Cell before she could fire her Noble Phantasm.Fate/EXTRA CCC - Chapter 7: The Depths of Holy Maiden - Anima Ataraxia
All four Servants to have ever unlocked this form became capable of moving faster than light, as shown when Kiara Sessyoin blasted them away to the ends of the galaxy, only for them to return short after. Although this shocked Kiara, it is noted that the only reason she was defeated by Hakuno's Servant is that the Alter Egos, BB, and Sakura inside her preventing her from using her "omnipotence" in order to protect their love, Hakuno. Had she known she had such fatal weakness before hand, Kiara states that she would have simply blown them away to some random realm, just to later destroy that realm alongside them. 
Because the Mythological Mystic Code a very powerful engine, its power places much burden on the Servant. Sakura claims that the basic Servant frame is not capable of withstanding the power output of the Mythological Mystic Code, and she asks Hakuno Kishinami to limit its use to one time only. 
When discussing how to free Altera from the shackles of the Umbral Star, Nero stated that this power would be enough to face Velber, although she feared that her Cyber Frame would not be able to handle that amount of pressure for long. However, taking into account that they also had the Royal Authority of the Regalia, Nero claims to have the power to make miracles happen. Although Nero says that using this Mystic Code is not a bad idea, Hakuno isn't entirely sure it would work. The Mythological Mystic Code is just the "manifestation of a Hero's Origin", so it wouldn't be enough to influence Altera, whose strength was backed by the Umbral Star, which is on a whole different level of power. To do so, they would need power on the same level as Altera. Even if they were to use the incredible power of the Royal Authority, and even if Saber were able to release her full power with the Mythology Mystic Code, the formats of the Moon Cell and the Umbral Star are too different. Hakuno states that this solution doesn't address the root of the problem. Since its power is ultimately just a function of the Moon's Holy Grail, all they could hope for at best would be to destroy Sefar, and even that wasn't guaranteed.Fate/EXTELLA - Golden Poem Arc; Chapter 5: To the One I Adore -Mare Carcer, the Titan's Dark Womb-
SaberCCCemperor.png|Nero Claudius.
ArcherCCCother.png|No Name.
CasterCCCgoddess.png|Tamamo-no-Mae.
GilCCCfullpower.png|Gilgamesh (Fate/EXTRA CCC).
The only four Mythological Mystic Codes are the following:
*Nero Claudius: Mythological Mystic Code of Emperor 
* No Name: Mythological Mystic Code of Wrought Iron
*Tamamo-no-Mae: Mythological Mystic Code of the Sun
*Gilgamesh (Fate/EXTRA CCC): Mythological Mystic Code of Genesis
The SampoFate/Grand Order - Christmas Eve in Pohjola: The Dreamer Santa and the Nutcracker - Act 5, Part 2: ~The Jaguar, Santa, and the Jesters~ and the sword Mythological Mystic Code Marmyadose possessed by Artoria Avalon also are referred to as Mythological Mystic Codes, though it is currently unknown if they are related to the Mythological Mystic Codes gained upon unlocking a Servant unlocking their Origin.
==Battle==
Battles between Servants can be called a process of gradually shaving off the Magical Energy that forms their bodies. Attacks that consume a great amount of Magical Energy will inflict a massive amount of damage on the opponent, but it will also weaken the attacker in the process. In order to inflict a great amount of damage with minimum expenditure of Magical Energy, it is necessary for them to collect intelligence regarding the enemy and assault their weakness. The greatest weapon is their Noble Phantasm, and a battle between Servants can often be called a battle between Noble Phantasms.
When describing their strength, they can be likened to a single jet fighter in pure attack power, far beyond the ability for a single person to fight. While strong, they would have to refuel many times in order to destroy a city. Though there are many modern weapons that are more powerful, their status as spiritual bodies makes them among the most powerful due to being immune to modern weapons. Their Noble Phantasms can be likened to a jet's ability to load a nuclear warhead far beyond its normal fighting power, with some Servants having extremely powerful ones. 
With Servants, those with an "extremely average Noble Phantasm" would have one around the level of B Rank which has strength able to be represented through numbers. Broken Phantasms, Invisible Air, and Gae Bolg's thrown strike all deal pure physical damage, while Gae Bolg's piercing version carries a conceptual effect able to kill opponents of a much higher level than the wielder.
===Affinity===
Affinity between Servants can factor into battles.
* - The various classes posses compatibilities against each other. Within the gameplay of Fate/Grand Order, this results in increased and decreased damage, but it is unknown what effect it has in the story. The only time it has been mentioned is within Fate/Grand Order, and no other story has mentioned it.
 Class affinity is said to be large enough that it should be factored into fighting the enemy.
*Hidden Attribute - The five main attributes Heroic Spirit affect Servants as well, but it does not provide a great advantage and does not need to be factored into battle under normal circumstances.
===Humans and Modern Weaponry===
As spiritual beings and divine Mysteries, Servants cannot be harmed by normal means and are still considered Spirits even in physical form, so they cannot be physically harmed by regular humans or modern weaponry.Fate/stay night - Fate route - Day 10: skyscraper - Strategy MeetingFate/stay night - Heaven's Feel route - Day 16: FINAL - Tactics They can only be harmed by attacks accompanied by Magical Energy like a Servant throwing dirks imbued with Magical Energy, so they can ignore even debris in battle unless it should become contaminated by an enemy's Magical Energy.Fate/strange Fake Volume 9 - Chapter 31: "Rhapsody of the Demigods II"
Only Servants can normally harm other Servants physically, so even a paper knife could be used to harm a Servant should another Servant wield it. Servants that are physically incarnated through methods such as Blackening can no longer return to spiritual form, allowing them to be damaged with strong enough magical weapons able to pierce the shadows surrounding them in the case of Blackening.
For a human trying to apply pressure to a Servant, even one physically the size of a child, it feels like trying to bend a steel beam. Punches with all of their strength will not even cause a Servant to budge a millimeter, and even Souichirou Kuzuki, whose punch is potent enough to crush a human's skull, can only slightly move Archer's head from the impact.Fate/stay night - Unlimited Blade Works route - Day 14: Knight stay night - Ideal Stabbing them with a knife does nothing but bring about a "prickling irritation" that does not hurt at all. 
Servants can be harmed by physical attacks strengthened magically through Reinforcement or enough Command Spells.Fate/stay night - Unlimited Blade Works route - Day 14: Knight stay night - Rin's clever attack "Mere bullets" normally pose no threats to Servants regardless of the caliber, but firearms wielded as regular weapons by Servants like Francis Drake's pistols are able to inflict damage,Fate/EXTRA - Week 1 and those ascended to the rank of Noble Phantasm like through Lancelot's Knight of Owner can prove lethal with a single shot.
=== Other opponents ===
Beings other than Servants that are able to combat Servants are few in modern times. Beings such as Arcueid Brunestud (Remake) at 30% of her strength, Amaterasu, and Kingprotea would always generally win against a single Servant due to their overwhelming ability. Arcueid could potentially be overwhelmed by two Servants fighting at once even though she is around four times as strong as one, while Amaterasu and Kingprotea require the strength of several Servants to be defeated. 
If speaking of a Servant with an extremely average Noble Phantasm, the members of the Twenty Seven Dead Apostle Ancestors (Remake), Kouma Kishima (Remake), and Aoko Aozaki can fight directly, while Ciel (Remake) and Shiki Ryougi's third personality can keep up in a defensive fight that can still be called a fight. Ryougi's normal personality and Shiki Tohno have no chance of matching Servants, but the Mystic Eyes of Death Perception they carry are capable of affecting such beings whether they are incarnated or spiritual bodies. 
Humans utilizing ten Command Spells would also be able to damage Servants. Kirei Kotomine and Kiritsugu Emiya at the peak of their strengths during the Fourth Holy Grail War could defeat Servants, but only when the weakest, Caster and Assassin, are at their most exposed, or when they have special conditions in their favor like surprise or suitability against the opponent.Fate/Zero Anime - Einzbern Consultation Room 6
Against Dead Apostle Ancestors, both are types of beings that live in Mystery, so such battles would come down to "having the means of killing the other guy somehow." Servants will generally hold a slight advantage, barring compatibility issues, and the Knight classes, Saber, Archer, and Lancer, will all be able to have solid fights. While Artoria Pendragon's Excalibur is extremely effective against those who overwhelm by material quantity and alienness, there are those capable of surviving being hit by Excalibur-class attacks through pure endurance. At the same time, those same ones with extreme endurance would have a tough time with Cú Chulainn's Gáe Bolg. ORT, to which Earth's rules do not apply, and Primate Murder, which has an advantage against Primates and requires seven Counter Guardians to control, can be called in a league of their own above both Ancestors and Servants.
==List of Servants==
==References==
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Category:Terminology in Fate/Zero
Category:Terminology in Fate/stay night
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Category:Terminology in Fate/Prototype
Category:Magecraft
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