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Description
Achilles, known as the Rider of the Red faction, is a central servant in the Great Holy Grail War depicted in Fate/Apocrypha. His identity is that of the legendary Greek hero from the Trojan War, the son of the human hero Peleus and the sea goddess Thetis. As a semi-divine figure, he boasts an extraordinarily high level of power, frequently described as an ultra high-spec servant whose combat abilities rival those of the Lancer of Red, Karna. While he possesses the aptitude for multiple classes, including Lancer, Berserker, and Shielder, he is summoned in the Rider class for this conflict, a role that allows him to fully leverage his signature speed and an array of powerful noble phantasms.

Achilles stands 185 centimeters tall and carries himself with the confidence befitting a celebrated hero. His personality is broad-minded, audacious, and fundamentally that of a warrior who lives for the thrill of battle. He does not care for authority or orders from those he considers kings or rulers, leading to a marked incompatibility with figures like Semiramis, the Assassin of Red. He is not a knight who serves loyally, but a hero who fights according to his own will and desires. He openly enjoys combat against strong opponents, believing that one should laugh and have a good time even on the battlefield. This straightforward and simple nature, however, can make him easy to provoke or fall into traps. His preferences are uncomplicated: he loves victory and the smiles of beautiful women, while his distaste is reserved for the concept of fate itself.

His core motivation is intrinsically tied to the defining choice of his life. When given the option between a long, peaceful, and unremarkable existence or a short life filled with heroic exploits, he unwaveringly chose the latter. His wish for the Holy Grail is to live again as a hero, to once more sprint through life at full speed in the manner he swore to his mother, Thetis. Beyond this personal desire, his primary driving force throughout the story is the opportunity to face his former mentor, Chiron, who is summoned as the Archer of the Black faction. The prospect of a decisive duel with his teacher is a source of immense joy and anticipation that surpasses nearly all other considerations.

In the narrative of Fate/Apocrypha, Achilles is initially summoned by a magus named Cabik Pentel, but through the machinations of Shirou Kotomine, the mastermind of the Red faction, he ultimately serves under Kotomine. He reluctantly complies with the strategies of his new master, though his personal agenda remains focused on his impending clash with Chiron. He participates in key battles, most notably the aerial assault on the Hanging Gardens of Babylon, where his legendary speed and combat prowess are on full display. His role in the story is defined by his complex relationships with other servants, which ultimately lead to his dramatic confrontations.

His key relationships are the most significant drivers of his character arc. The most profound is his bond with Chiron, the wise centaur who raised and trained him. Achilles still respectfully calls Chiron master, viewing him as a father, brother, and close friend. Despite this deep affection, he is obsessed with fighting him, viewing their inevitable clash as a tragic yet exhilarating necessity. Another crucial relationship is with Atalanta, the Archer of Red. He refers to her as Sister, a familiarity stemming from stories he heard of her in his youth, which gave him a boyhood crush. His care for her is genuine, and he feels a deep sense of guilt for failing to notice her emotional descent and being forced to fight her. A defining trait born from regret is his inability to fight women with his full strength; after killing the Amazon queen Penthesilea with his spear, he swore never to unleash its true power against a female opponent again.

Achilles undergoes notable development as the story reaches its climax. His eagerness for a glorious battle leads him to a final confrontation with his teacher, Chiron. The duel is a poignant and violent reunion, allowing both to settle their unfinished business. Following this, he is compelled to fight a corrupted and monstrous version of Atalanta. His actions in this fight are not driven by a desire to destroy an enemy but by a need for atonement. He fights to stop her rampage out of a sense of responsibility, and his tears upon shattering her dream reveal the depth of his remorse and compassion beneath his boastful exterior. Through these events, he moves from a simple battle-seeker to a hero who confronts the painful consequences of his past and his relationships.

Achilles possesses a staggering array of notable abilities, making him one of the most formidable servants in the war. His primary defensive noble phantasm is Andreias Amarantos, the Amaranth of the Brave, a blessing from his mother that renders his entire body invulnerable except for his famous heel, the only part that retained his mortality. This invincibility can only be bypassed by those with a sufficient rank in Divinity or by those wielding divine constructs. His offensive and mobility-focused noble phantasm is Dromeus Kometes, the Comet Form, a constantly active ability that embodies his legend as the fastest hero of all time, allowing him to cross vast battlefields in an instant, though it critically requires him to expose his vulnerable heel. For mounted combat and large-scale destruction, he possesses Troias Tragoidia, the Tempestuous Immortal Chariot, a three-horsed chariot pulled by two immortal divine steeds given by Poseidon and one powerful mortal horse. This chariot can fly and wreath itself in magical energy, becoming a devastating implement of slaughter as it reaches incredible speeds. His most personal weapon is Diatrekhon Aster Lonke, the Spear-tip of the Star Traversing the Skies. When its true name is invoked, it creates a bounded field similar to a reality marble, a one-on-one arena that isolates the combatants from the outside world and nullifies external interference from gods or luck. This arena is designed for a pure, fair duel to the death, and it is this spear he refuses to use against women. As a testament to his comprehensive power, he also possesses a shield-type noble phantasm called Akhilleus Kosmos, a divine construct forged by Hephaestus that is said to contain a miniature world, granting him unparalleled defensive capability against even anti-fortress or anti-country attacks.