Reiji Mitsurugi, known in the original Japanese version as Reiji Mitsurugi and in some localizations as Miles Edgeworth, is a prominent prosecutor in the Ace Attorney anime adaptation. He is introduced as a formidable and highly respected figure in the courtroom, renowned for his perfect win record and his uncompromising pursuit of guilty verdicts. Mitsurugi is a tall, slender man in his mid-twenties with neatly styled gray hair and a sharp, tailored burgundy suit, which he wears with a cravat. His appearance is meticulously polished, reflecting his obsessive attention to detail and his aristocratic bearing.

Mitsurugi’s personality is defined by a cold, logical, and often arrogant demeanor. He speaks with precise formality and possesses a razor-sharp intellect, believing that the role of a prosecutor is to prove the defendant’s guilt beyond any doubt. He views the courtroom as a chessboard, where strategy, evidence, and psychological pressure are the keys to victory. This ruthless approach often leads him to clash with defense attorneys, whom he considers naive or obstructionist. However, beneath this icy exterior lies a deep-seated trauma and a rigid moral code shaped by his past.

His background is central to understanding his character. As a child, Mitsurugi was a bright and idealistic boy who admired his father, a defense attorney. He witnessed his father’s murder in a case that was subsequently mishandled, leading to a corrupt verdict that exonerated the true killer. This event shattered his faith in the justice system, causing him to reject the defense’s role and adopt the prosecutor’s path as a means to ensure that criminals never escape punishment. He was taken in by the influential prosecutor Manfred von Karma, who trained him under a philosophy of absolute victory and perfection, further cementing his belief that the pursuit of a guilty verdict is the only true form of justice.

Mitsurugi’s primary motivation evolves over the course of the story. Initially, he is driven by a need to prove his own infallibility and to honor the twisted teachings of his mentor. He seeks to validate his father’s death by ensuring that no guilty party ever walks free, even if that means using underhanded tactics or suppressing doubt. As the narrative progresses, his motivations shift toward a more personal quest for truth and atonement. He begins to question the very foundation of his career after encountering defense attorney Ryuichi Naruhodo, who consistently challenges Mitsurugi’s methods and forces him to confront the possibility that he has sent innocent people to prison. This internal conflict becomes a driving force, leading him to seek the truth about his father’s murder and to redefine what justice means to him.

In the story, Mitsurugi serves as both a primary rival and an occasional ally to the protagonist. He is the central antagonist in several early cases, presenting an almost insurmountable challenge due to his intellect and prosecutorial power. However, he is not a villain; his role gradually transforms into that of a reluctant collaborator and, eventually, a steadfast friend. He appears in multiple key arcs, including those that delve into his traumatic childhood and the corruption within the legal system. His journey is one of the most significant character arcs, moving from a dogmatic prosecutor to a man who seeks truth over victory.

His key relationships are pivotal to his development. The most important is his complex bond with Ryuichi Naruhodo. Initially, Mitsurugi views Naruhodo with contempt, seeing him as an unworthy opponent. But after repeated defeats that force Mitsurugi to acknowledge his own flaws, he develops a deep respect for Naruhodo’s unwavering belief in his clients. This rivalry evolves into a friendship based on mutual professional admiration and a shared commitment to uncovering the truth. His relationship with his mentor, Manfred von Karma, is toxic and manipulative; von Karma’s influence is the source of much of Mitsurugi’s inner turmoil, and breaking free from that influence is a major turning point. He also shares a warm, albeit initially strained, connection with his childhood friend, the detective Hideki Isono, and a protective, brotherly bond with the young prosecutor Mitsuko Higashizawa, who looks up to him.

Mitsurugi undergoes significant development throughout the anime. He starts as a prideful, almost villainous figure who values his record above all. Through his confrontations with Naruhodo and his own investigation into the past, he experiences a crisis of conscience. He resigns from his position at one point, believing he is unworthy of being a prosecutor, and embarks on a journey of self-discovery abroad. Upon his return, he is noticeably calmer, more introspective, and willing to collaborate with defense attorneys. He adopts a new philosophy that a prosecutor’s true duty is not to win at all costs, but to ensure that justice is served, even if that means acknowledging the defendant’s innocence and helping the defense. This transformation is not instantaneous but is portrayed as a gradual, hard-won change.

Notable abilities include his exceptional deductive reasoning and his mastery of courtroom logic. Mitsurugi can quickly spot inconsistencies in testimonies, analyze evidence with startling speed, and construct elaborate chains of reasoning to corner witnesses. He is a master of psychological pressure, using pointed questions and stern glares to rattle opponents and expose lies. He is also highly skilled in forensic analysis and legal procedure, often anticipating the defense’s moves several steps ahead. Beyond the courtroom, he possesses a refined knowledge of classical music, tea ceremonies, and foreign languages, reflecting his cultured upbringing. Despite his serious nature, he has a hidden appreciation for the steel samurai, a children’s hero show, which he watches in private as a nostalgic comfort from his childhood.