[R]ider †Doesn't know anymore† [♠&a

Rider Medusa:
She is the Servant of Shinji, first seen scouting around Homurabara Gakuen. Rider is silent, sultry, and vigilant, never hesitating to shield her Master from harm. With Shinji incapable of lending any Mana to her, she is forced to seek alternative means to augment her abilities. To compensate for this weakened state, Rider employs covert battle tactics and takes full advantage of any territory around her. Her weapon of choice is a pair of long iron nails fastened to opposite ends a single chain, which she effectively thrusts from distances.
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Noble Phantasms:
Blood Fort Andromeda: Outer-Seal. Temple of Blood
Rank: B
Type: Anti-Fort.
By using her blood as a material component, Rider is able to create a crimson dome-shaped barricade around her foes. Victims trapped within this enclosure are dissolved into a slurry of blood and organic ooze, which is later absorbed by Rider as Mana. Although such a Noble Phantasm is effective at cutting off escape routes for fleeing enemies, its primary function is the accumulation of Mana. Andromeda is the name of a princess who married Perseus, a son of Zeus and the slayer of Medusa.
Breaker Gorgon: Self-Seal. Temple of Darkness
Rank: C-
Type: Support.
The visor Rider wears over her Mystic Eyes (Qubeley) is a Noble Phantasm, designed to allow management of the power emitted from her gaze. The potency of this ability is so enormous that petrification occurs regardless of whether or not an individual looks into her eyes. This Noble Phantasm honors the Gorgon sisters, three sadistic monsters from Greek mythology.
Bellerophon: Bridle of Chivalry
Rank: A+
Type: Anti-Fort.
A golden harness and saddle, effective only when fastened around Rider's mount, the mythical winged horse Pegasus. When used in conjunction with Bellerophon, all of Pegasus stats are increased by one rank . The buffets from Pegasus' wings are capable of generating massive shock waves, which raze infrastructure and lacerate the bodies of living beings. The conjuring of a legendary beast is considered to rival the greatest of Noble Phantasms, and is done independently of Bellerophon. The name of this Noble Phantasm is a reference to Bellerophon, a young prince who tamed a Pegasus and killed the Chimera.
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True Identity:
Her real name is Medusa, the Gorgon from Greek mythology. Medusa, along with her sisters, Stheno and Eurayle, were born from the wishes of mankind for ideal goddesses, contrasting the flawed gods of Olympus. All three Gorgons were blessed with beauty, but unlike her sisters, Medusa was mortal, and fated to grow older and taller over time. Medusa was also cursed with Mystic Eyes, which transmute all living flesh under her gaze into stone, requiring her to wear a blindfold. Because of these differences, she was bullied by her older sisters. At one point, Medusa was given her Pegasus as a gift from Poseidon.
Jealous of the sister's allure, Athena goaded the Gorgon's worshippers into attacking them, forcing the sisters to take refuge on the Shapeless Isle. This disgrace left Medusa bitter and spiteful of humans, her resent intensifying as she killed invading men who lusted after her sisters. Over the years, Medusa became eager to slaughter and ingesting humans, which spread infamy about her as an icon of terror. These fears, like the desires that gave birth to the Gorgons, distorted Medusa's appearance and incarnated her into the atrocious Gorgon of legend. Despite their teasing, Stheno and Eurayle deeply loved their sister, and upon realizing they were responsible for her savagery, allowed Medusa to devour them. Eventually, the demigod Perseus, equipped with five Noble Phantasms, proved capable enough to decapitate Medusa, ending her tortured and dismal life. As she died, Medusa realized that however poorly Stheno and Eurayle treated her, she had treasured the time she spent with them, and would later consider those experiences as her fondest memories.
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Role:
Rider's initial Master was Sakura Mato; however, she became the Servant of Shinji when Sakura, pressured by Shinji, yielded her Master's right to him. Rider holds no love for Shinji, seeing him as a vile and predatory, but obeys his commands as a dutiful Servant. Because of their similar backgrounds, she is empathetic of Sakura, and seeks to protect her whenever possible. Like many of the Servants who participated in the 5th Holy Grail War, Rider has no motivation for seeking the Holy Grail.
Although regarded as one of the more powerful Servants of the 5th Holy Grail War, Rider is eliminated in almost every scenario. She is obliterated by Saber's Excalibur in Fate, and killed early on in Unlimited Blade Works by Caster's master, Soichiro Kuzuki. However, during Heaven's Feel, Rider is liberated from her indenture to Shinji, and assists Shiro Emiya in his battle against Dark Saber and Angra Mainyu.
During Fate/Hollow Ataraxia, Rider is often found living in Shirou's house, reading near-constantly. She aids the Servants in holding back the invasion of dog-shadows, prefering to stay next to Sakura.