Caster

	True nameMedea
	Also known asMagus from the Age of the Gods
	MasterSouichirou Kuzuki
	GenderFemale
	AlignmentNeutral Evil
	Height163 cm
	Weight51 kg
	Place of originGreece
	Noble PhantasmRule Breaker

Overview

Caster's True Name is Medea, an unfortunate princess who was labeled as a witch in Greek mythology. She was the princess of Colchis who possessed the Golden Fleece. Her father, King Aeëtes of Colchis, excelled at magic, and as his daughter, she was also practiced in such ways. Her personality at the time was far from what would be called a witch, and her fate became confounded after the hero famous from the Argo Expedition, Jason, appeared before her.

The King of Corinth took a liking to Jason, and decided to have his daughter marry him. Jason also decided to choose the young daughter over Medea, which lead to her exile. Her actions afterward were those that have truly marked her as a witch. She appeared at Jason's wedding, and burned all who attended with her magic. Everyone except for Jason was killed, including the King of Corinth and his daughter, and Medea's fate after she left Corinth is unknown. As her life was filled only with betrayal, it is said that the princess became a true witch and continued to roam the Greek lands.

Combat skills

Caster is a magus from the Age of Gods that far surpasses modern magi. She is something from the divine era that shouldn't exist in the Age of Man, so her abilities in magecraft are on an entirely different level than any living magus can produce. She has a large amount of magical energy at her disposal, and at normal levels, she is capable of staying in the world for up to two days without an active contract with a Master even though she lacks the Independent Action skill of the Archer class. Due to her first Master being overly cautious of her abilities, he constantly kept her magical energy level below his own, so she was only able to last a brief period of time after killing him. She normally would have disappeared before finding another anchor to the world, but the Ryuudouji Temple kept her stable long enough to establish a contract with Kuzuki.

She cannot fight directly against the other Servants as a Caster. Due to the natural Magic Resistance of Saber, Lancer, and Rider, she is unable to match them in direct combat as a magus. She instead resorts to using tactics such as breaking the rules of the war to summon Assassin, creating her territory to collect souls from the town, and staying out of the fight herself so that she can observe the progress of the war before making her move. Under normal conditions she may have restrained her Master like a puppet to further her plans, but her love for Kuzuki and his apathetic view of the war allows her to make all of the decisions without resorting to such a tactic. If forced into combat, she does have confidence in her own abilities.

Magecraft

She can also use an extremely strong version of Reinforcement on regular humans, greatly strengthening them and allowing them to harm spiritual bodies like Servants. This allows for Kuzuki to slay Rider and almost kill Saber due to his unique fighting style. If he were to go against Caster for some reason, the battle would come down to whoever manages to get the first strike. She cannot utilize a Reality Marble, but she can potentially construct "another world" of the same scale by precisely constructing small magecraft and large magecraft. The time and expenses required to do so would be very vast.

Caster lacks any offensive Noble Phantasms. She only has access to Rule Breaker, which is a ceremonial dagger unlikely to be able to kill even a regular human. Its main use is as an Anti-Thaumaturgy Noble Phantasm capable of dispelling and destroying any kind of magecraft. The greatest benefit it offers during the Grail War is the ability to sever the connection between an enemy Servant and Master, allowing her to take their Command Seals for her own.

She is able to manipulate her figure and her robe in a number of ways. She can control the magical energy in the air to become a dense fog that covers her entire body. This allows her to manipulate her appearance by covering herself in darkness like a mirage. Looking like a shadow that reminds Shirou of Death, she can show herself as she wishes or remain hidden from sight. She can create solid images of herself that will fade away as if she were actually killed upon being attacked. She can control them from a long distance in order to manipulate her Warriors, or she can do it while in battle to create a diversion for her attacks. Upon being skewered by Gilgamesh, it seems she has died, but she is able to hide herself in her floating cape in an attempt to escape. She can extend her cape as wings for flight, which allows her to maximize her destructive potential with the Rain of Light.

The speed of Caster's spells cannot be exceeded by anyone because she can bring forth divine mysteries from a single word. Rin Tohsaka, someone who will eventually be among the top one hundred modern magi, is able to match her on a single spell basis by releasing magic directly from her jewels. Equal in speed, it is a battle of power without a "first move" that will end only when one runs out of energy. Caster's spells are strong enough that the only way Rin is able to nullify a single one is by utilizing years worth of magical energy. Even that level of magecraft is simple to Caster, as three full powered jewels from Rin capable of destroying Caster's temple and the entire Fuyuki church are easily nullified after the magical energy is sucked into Caster's robe.

Personality

As she began to betray her original master, Atram Galiast, Caster had shown a surprising amount of morality as she freed the children that Atram had planned to sacrifice, before completely destroying his workshop. While she was about to disappear after killing her first Master, she lamented that she would disappear before being able to fight. She would disappear unable to do anything as a pitiful Servant summoned only to be trampled upon. While such a situation was vexing, it was not out of the ordinary for her. It had always been that way for her, as she has always been used as a tool by others. She had always been treated unreasonably, and she was never once understood by anyone. Her life was always controlled by someone else, and her mind was destroyed at a young age to save a hero chosen by the gods. She was cursed to blindly love a man she had never seen just because he was favored by the goddess of beauty, which led to her being forced to betray her own father and country. She was originally an innocent person, but after suffering from repeated betrayal, she thought "Hmmm, fine, I might as well sink to rock bottom". Because of this, she was tainted by evil.

People wanted a convenient scapegoat that they could blame for any disaster, whether it is an evil to protect the king or an evil to be on the end of evil superstitions. She was part of an unchanging pattern where people demand easily understandable evil to reassure themselves of the own goodness. She was considered the perfect sacrifice in that regard with the only person she could rely on, her father, in a distant country. Nobody defended her, and they gladly blamed her for all the ugly things in the world. They decided every ugliness was the witch's doing, from being poor, to hating others, the fact that humans are ugly, or even that people die.

She merely accepted that fact, and she decided because she can only live as a witch, that she would act as a witch. She imposed such a reason of existence on herself as it is the only role people gave to the girl called a witch who never had a free will. She swore to show them the ugliness of their wishes that they demanded of her. If they do not know their own ugliness, they can stay ignorant, go to hell for their own crimes, and suffer forever. They won't be able to get out of hell, where they will suffer forever as criminals because they do not know what crimes they have committed.

Role

Caster was originally summoned by a magus from the Mage's Association before the start of the Holy Grail War. He was a legitimate magus who was in his thirties with a medium build and few other noteworthy characteristics. He had no drive for combat, but still dreamed of victory while waiting for the other Masters to kill each other. She quickly gave up on him within a few days while planning to sever her connection to him. She made him use his Command Spells on meaningless things, so that he would have no control over her. She acted as an obedient Servant and filled the man's conceit in order to make him believe that she would still be faithful without them, and upon using his third Command Spell, she killed him with Rule Breaker because she did not like the fact that the contract still existed.

On the verge of her spiritual body dissipating, she stumbled upon Souichirou Kuzuki at the foot of the Ryuudouji Temple. Caster begged this stranger for his help; Souichirou obliged without hesitation, forming a new contract with her. He then brought Caster into the temple and attended to her recovery. Caster quickly fell in love with Souichirou, for he was the first man to show her genuine kindness, dedication and loyalty. Her primary objective shifted from obtaining the Holy Grail for herself to simply preserving their short time together. To achieve this end, she siphoned Mana from the populace of Fuyuki City and fortified her position on Mount Enzou.

Caster found and killed the regular master for Assassin before he could do the summoning. She used the mountain gate as a cataylst to summon a fake servant Assassin known as Sasaki Kojirou.

Fate
Caster being slain by Gilgamesh in Fate In Fate, her stronghold in the Ryuudouji Temple is briefly assaulted by Saber, though her own Servant, Assassin, manages to hold her back. She is later torn apart by Gilgamesh's Gate of Babylon while ambushing Shirou Emiya and Saber.
Unlimited Blade Works
Caster's final moments with Souichirou in Unlimited Blade Works Caster has a prominent role in Unlimited Blade Works scenerio. She sets her sights on Saber as a tool to defeat Berserker, and so uses her magecraft in order to control Shirou Emiya, making him go to Ryuudo temple in order to take his command spells. Before she can take them, however, she is attacked by Archer, who defeats her with Caladbolg II, forcing her to retreat. She appears again when Rider uses Blood Fort Andromeda on the school, aiding her master by holding Saber back while her master kills Rider. This incident causes Shiro and Rin Tohsaka to attempt to defeat her, ambushing her master at night. However, their attack is unsuccessful when Kuzuki is more powerful than expected. Caster's next move is taking Taiga Fujimura hostage and using her to bait Saber, successfully taking her as a Servant. After capturing Saber, Caster attacks the church and seemingly kills Kirei Kotomine, taking over the church and using it as a stronghold. She later takes Archer as her servant when he betrays Rin. Caster's faction's last battle takes place against Shirou, Rin and Lancer. While Lancer fights Archer and Shirou fights Kuzuki, Caster is confronted by Rin, and defeated through Rin's use of Chinese martial arts. Before Rin can finish off Caster, she is knocked out by Kuzuki, who already defeated Shirou. Caster's final moments are in protecting her master from a barrage of blades from within Archer's Unlimited Blade Works when he betrays her.
Heavens Feel
Caster being Zouken's puppet Caster is killed early on in Heaven's Feel by Saber. After her defeat, she was the first Servant to be devoured by the Shadow before disappearing, thereby interfering with the ritual of 5th Holy Grail War and making Sakura in the Lesser Grail instead of Illya. Later, Zouken Matou uses one of his worm familiars to keep Caster's body alive as a puppet. Saber and Archer later destroy the puppet during a confrontation with Zouken.

Abilities

Item Construction: A

Person is capable of making healing potions that grant limited immortality.

Territory Creation: A

Creation of a "Temple", which is a special terrain that is advantageous to oneself as a magus.

Golden Fleece: EX

The Golden Fleece is a very valuable item that can summon a dragon when utilized properly. Though it is classified as a Noble Phantasm normally, it functions as a skill in this case.

High-Speed Divine Words: A

Power to activate Thaumaturgy without the use of Magic Circuits. The language of the Age of Gods, back when words played a heavy role in spellcasting. As such, it is power long lost by modern magi.