I leave you now this list with the servants or servants of the FATE series Very cool characters who participate in the holy war to obtain holy grail, a highly recommended anime in their 2 seasons vote for your favorites
Assassin (Fate / Zero)
Assassin is the reincarnation of an Order of assassins composed of several entities instead of one. They act as agents of recognition for Tokiomi and Kirei after Gilgamesh killed one of them (everyone else still being alive). They can only be truly defeated if all of them are killed.
Caster (Fate / Zero)
Commonly known as Bluebeard. A Servant who gets pleasure by offering his victims a moment of relief before terrorizing them and then killing them. He expresses an interest in Saber because he has confused her with Joan of Arc, for which Bluebeard has an infatuation.
Assassin (Fate / Stay Night)
Unlike the other Servants, Assassin was not invoked by a Master but by another Servant, Caster. His real name is Kojirou Sasaki. Assassin is a master with the sword, to the point that his single technique allows him to reach the level of a Noble Phantasm. In his final fight against Saber he reveals that in reality the person named Kojirou Sasaki does not exist, it is the name of an invented character who has gone down in history in the imagination of people as a sword master, and Assassin is only an unknown swordsman who was given the name of Kojirou Sasaki. This implies that Assassin is a false heroic soul, with no place to which he can return or a wish that can be granted, and explains why he does not possess a Noble Phantasm. According to him, that doesn't matter since all he wanted was to cross swords with Saber. He finally manages to face Saber and is defeated just before his mana runs out.
Caster (Fate / Stay Night)
honorable guest of the Ryūdō family, she was allowed to live in the temple until the preparations for her marriage were finalized. It measures 1.63 m (5 ft 4 in) and weighs 51 kg (112 lb). Magnificent, talented and mysterious woman, her presence has attracted the attention of many aspiring monks. The point is that she is the Servant of the most powerful Sorcerer type so much that she has managed to obtain her own Servant, invoking Assassin. She tries to summon the Holy Grail by sacrificing the souls of the city and using Sakura as a vessel for the artifact, but Shiro and the others manage to deter her. He dies at the hands of Gilgamesh, while trying to protect his Master from the Noble Phantasm of Servant Archer. Her true identity is Medea, the treacherous witch of Greek mythology, her main appearance is in Jason and the Argonauts.
Rider (Fate / Stay Night)
Shinji's Servant. Rider is silent, vigilant and will never hesitate to serve as a shield to his Master, but since he is unable to supply the manna he needs, he will be forced to look for other methods that increase his abilities. Compensating for his little magical ability, Rider employs advanced physical combat tactics and takes advantage of the territory. His favorite weapon is a pair of long iron daggers attached by the ends to the chain with which Andromeda was tied, and which he can handle from a distance. In general, their weapons and attacks are related to the myth of Perseus, so their powers and invocations are related to it.
Lancer (Fate / Stay Night)
The first hostile Servant to appear, Lancer is a fierce but balanced warrior who likes combat against a worthy opponent. It measures 1.85 m (6 ft 1 in) and weighs 70 kg (154 lb). His real name is Cú Chulainn. He has a playful attitude and leads his life carelessly, but quickly goes into battle frenzy. The Lancer are classified as the "most agile" class of Servants (their identity is that of Cuchulain, a mythical Irish hero, since he knows the Gae Bolga technique). It is later revealed that his Master had been killed by Kirei before the 5th Holy Grail War began. Kirei took control spells from Lancer's Master and made the pact with him. In the end he turns against his Master and confronts Gilgamesh, helping Saber and Shiro escape. However, despite his great ability, Lancer was no match for Gilgamesh, who finished him after a short but intense battle.
Berserker (Fate / Zero)
Formerly known as the Black Knight. A Servant who possesses the ability to use virtually any object as his Noble Phantasm, which allows him to match Gilgamesh in combat, even though he doesn't want to recognize him like that. His madness has reduced him to a nonsense, although he is a dangerous expert fighter. Despite his madness, he is still able to instinctively recognize Saber.
Berserker (Fate / Stay Night)
The Servant of Ilya, a giant colossal that uses a huge stone as its weapon, capable of creating massive destruction with just one blow. The Servants of his class are ranked as the strongest of all races, although they are difficult to control and always turn against their Masters, however, Ilya seems to have few problems to dominate Berserker. His greatest power is to resurrect twelve times, before finally falling. This is because his true identity is the Hercules, and his noble ghost derives from the 12 tasks he performed; That is the reason why he must die twelve times.
Lancer (Fate / Zero)
A Servant with 2 Noble Phantasms: Gae Buidhe (Golden Rose of Mortality) and Gae Dearg (Crimson Rose of Exorcism), which can counteract the skills of Saber and Berserker. He is a knight, has a strong sense of honor in battle and loyalty to his Master. Despite being enemies, he and Saber share a mutual respect because they are both loyal gentlemen.
Rider (Fate / Zero)
The King of the Conquerors, who wishes to defeat Saber because he considers that his ideals are not worthy of a true King, and also because he believes that she should be among his ranks of heroes. He has several Noble Phantasms, the first is Gordius Wheel (Wheel of the Authority of Heaven), which summons an ox-drawn carriage when Iskander cuts the air with his sword. His eccentric and authoritarian personality along with his incredible abilities creates difficulties for his Master and his opponents. His incredible power could be compared to Archer, who in fact takes him as the only worthy opponent.
Archer (Fate / Stay Night & Fate / Zero)
True Hero: Gilgamesh Fate / Stay Night: An arrogant, selfish, and enigmatic Servant of the Archer class, Gilgamesh seems to become familiar with Fuyuki City and claims to have had a relationship with Saber. It measures 1.82 m (6 ft 0 in) and weighs 68 kg (150 lb). Typically protected by a golden armor with ornaments, it has a huge number of Noble Phantasms, although none is representative of its true identity. He is a legendary character from Sumerian mythology. Fourth king of Uruk towards the year 2750AC, his main power in the anime is "Gate of Babylon" from which he draws a variety of weapons, including swords. Another of his powers is "Enûma Elish" which means in Akkadian "when on high." Apparently he is obsessed with possessing beautiful things, such as Saber, which is why he constantly tells her that she will end up being part of his property. Gilgamesh had been summoned by Tokiomi Tohsaka (whom he betrays to ally with Kirei) for the 4th Holy Grail War. During this war it was that he faced Saber and was declared, in addition to that he managed to defeat her, however his Master was defeated by the Master of Knowledge, Emiya Kiritsugu, who ordered his Servant to destroy the Holy Grail and put an end to That way to battle. However, Gilgamesh stayed in the human world, feeding on human souls and waiting for his opportunity. He is defeated by Saber in the final battle of the anime, after an intense battle between them during which Saber manages to discover his true Noble Phantasm. Fate / Zero: A rude Servant in Fate / Stay Night, the King of Heroes. He dislikes the presence of Saber and Rider, particularly because they were both kings, just like him. In turn, he is irritated by Tokiomi, his Master. Gilgamesh has trouble controlling himself when someone hurts his pride.
Archer (Fate / Stay Night)
He is the Servant of Rin Tohsaka. Due to an incomplete invocation, he apparently has no memories of his previous life or his identity, but it is thought that it may simply be a lie not to alter the course of events, since in reality he comes from the future, and in the fight against Berserker, he implies that he remembers Ilya. Archer is sarcastic and cynical, but with a complex and dark personality that is revealed throughout history. He believes that Shirou is weak in his idealistic thoughts, cataloging his ideal of "wanting to save everyone" as a silly and impossible task. In Unlimited Blade Works Shiro together with Saber reveal that Archer is the Emiya Shiro Heroic Spirit and in the manga it was revealed that his desire was to change the desire of his former self.
Know (Fate / Stay Night & Fate / Zero)
True Hero: Arturia Pendragon (King Arthur) Fate / Stay Night: She is Shiro's Servant, an agile and powerful warrior. Loyal, independent and reserved, Saber suppresses his emotions to focus solely on his goals. She is included in a Servant class characterized by her excellent abilities, for example, when her Master cannot provide the necessary amount of "Manna" (magic power), she minimizes her activity to protect him. Saber hates Shirou's "protective tendencies" towards her, and believes that his behavior jeopardizes his goal, which is to win the fight. Fate / Zero: The same character as Fate / Stay Night. Known as the King of the Knights or also as King Arthur, who obtains the magical "Sword of the Stone", Excalibur. She maintains a high code of honor. Emiya is irritated to discover that the mythical King Arthur was a girl. Despite this, both are Servant and Master looking for the same goal, but their different ideological perspectives result in a tense relationship, where Kiritsugu does not directly recognize Saber.