Rin Okumura (奥村 燐 Okumura Rin?) is the fifteen-year-old protagonist of the story. He is a son of Satan born from a human woman and is the inheritor of Satan's powers. His powers were sealed at birth into the demon-slaying blade Kurikara (倶利伽羅?) by Mephisto Pheles, the True Cross Academy principal, allowing him to live a normal human life for nearly 15 years with his twin brother Yukio and his foster father Shiro Fujimoto. Rin becomes aware of his true identity after Kurikara can no longer seal his powers, setting off a chain of events that lead to the death of Shiro at the hands of Satan, who attempts to drag Rin back to the demon realm, Gehenna. Mephisto Pheles later confronts Rin who demands Mephisto to let him join the exorcists against the demons.[ch. 1] Mephisto personally enrolls Rin into the True Cross Academy so that Rin can pursue his goal to become a Paladin and to defeat Satan.[ch. 2] While currently an Exwire, Rin wishes to obtain the biggest rank of an Exorcist, Paladin, to prove Fujimoto did not want to use him as a weapon
Yukio Okumura (奥村 雪男 Okumura Yukio?) is Rin's younger twin brother. When it was discovered that the woman impregnated by Satan was going to have twins, it was believed that Satan's powers would be split between them. Due to the weakness of Yukio's body, however, he did not inherit any of Satan's powers, thus being born fully human with the full extent of Satan's powers going to Rin.[ch. 1]Yukio did, however, receive a spirit wound at birth from his brother, which allowed him to be aware of demons for as long as he can remember. Yukio secretly trained to become an Exorcist from the age of seven in order to protect Rin through the help of Fujimoto. While both Yukio and Rin are in their first year at True Cross Academy, Yukio is already an instructor at the Exorcist cram school teaching Anti-Demon Pharmacology to Rin's class.
Ryuji Suguro (勝呂 竜士 Suguro Ryūji?) (nicknamed "Bon" (坊?)) is a stubborn and hot-tempered individual. Despite his delinquent appearance and attitude, he is very hardworking and the best student in class. Ryuji is the heir to the Cursed Temple in Kyoto. Because of the destruction of the temple in the Blue Night and his anger towards his father Tatsuma Suguro, he swears he will defeat Satan and rebuild his Temple.[ch. 4] When Rin's identity is revealed, Ryuji, along most of his classmates start avoiding him, but after a confrontation with his father and Rin, Ryuji and his classmates help Rin escape impending execution and reconciles with him, claiming that he only blames Rin for not trusting his friends with his secret.[ch. 26] During the battle with the Impure King he inherits a familiar named Karura (a phoenix like demon which has the ability to use strong amount of red flames to incinerate almost everything and reincarnate when it dies) from his father Tatsuma Suguro, he uses its power to create a Gouhaen (a fire-element barrier) in order to prevent any miasma coming out from the Impure King from spreading further.[ch. 27] Ryuji is currently an Esquire just like Rin and the others, trying to achieve Meister in both Aria and Dragoon. He is voiced by Kazuya Nakai in Japanese and by Kyle Hebert in English.[1]In the Blue Exorcist musical, he was portrayed by Yūki Tomotsune.
Shiemi Moriyama (杜山 しえみ Moriyama Shiemi?) is the daughter of the woman who runs an Exorcist-only shop. She is kind and has an abiding love of gardening, but often lacks confidence in herself. Before the series, Shiemi never went out of her home and tended to the garden with her grandmother. After her grandmother died, Rin and Yukio exorcise the demon that was leeching her life force and she decides to become an Exorcist.[ch. 3]
While at the academy, Shiemi only talks with Rin and Yukio initially, she also comes on amicable terms with Ryuji, Konekomaru, and Renzo. Eventually she also earns Izumo's friendship despite being initially used and mistreated by her. Shiemi gets devastated upon learning Rin's secret, taking it to mean that she is not trustworthy enough to them. However on the Kyoto mission, she reconciles with Rin when seeing how much he is suffering as a result of his nature.[ch. 26] Shiemi has the talent to become a Tamer and can summon a reliable Greenman spirit that can produce healing herbs and plant-related barriers. She is currently an Esquire. She is voiced by Kana Hanazawa in Japanese and by Christine Marie Cabanos in English.[1] In the Blue Exorcist musical, she was portrayed by Ari Nakajima.
Izumo Kamiki (神木 出雲 Kamiki Izumo?) is easily one of the best students and she is aware of it. She has a tsundere attitude and is offensive towards everyone except her childhood friend Paku, who was the only one in her elementary school who would talk to her.[ch. 5] Very prideful and often difficult to talk to, Izumo does care about her fellow Esquires and is the first of Rin's classmates to accept Rin after his identity as Satan's son was revealed. Izumo's reason for becoming an exorcist is unknown, but connected to an incident that happened when she was a child. Izumo attempts to achieve a Meister in Tamer, and can summon two Byakko (foxes) to fight for her. She is voiced by Eri Kitamura in Japanese and Kira Buckland in English.[1] In the Blue Exorcist musical, she was portrayed by Anna Hachimine
Konekomaru Miwa (三輪 子猫丸 Miwa Konekomaru?) is a timid but brilliant individual, able to come up with complex strategies in a short window of time. He is very loyal to Ryuji and Renzo, since they grew up together at the same Temple in Kyoto. He is kind to everyone, but it takes long for him to reconcile with Rin after discovering his secret, despite seeing his true character.[ch. 26] He is an orphan and the surviving head of the Miwa family. He plans to achieve the Meister in Aria. He is voiced by Yūki Kaji in Japanese andMona Marshall in English.[1] In the Blue Exorcist musical, he was portrayed by Jun Muruyama.
Renzo Shima (志摩 廉造 Shima Renzō?) is a very carefree yet fearful character. He is very loyal to Bon and Konekomaru, since both grew up with him at the Cursed Temple in Kyoto. Renzo is the second of the cast who accepts Rin after discovering his identity, finding ignoring Rin to be troublesome. He is infatuated with Izumo, obsessed with women. In elementary school, he was referred to as the "Erotic Demon". Now that he is in high-school, he is trying to be more refined. His hair is naturally black, but he dyed it pink (to the chagrin of his father). Renzo carries a K'rik (Khakkhara) staff to fight like his two brothers and plans to achieve the Meister in Aria. Later in the manga, Renzo learns to conjure flames with his staff to improve his fighting capabilities. He is voiced by Kōji Yusa in Japanese and Brian Beacock in English.[1] In the Blue Exorcist musical, he was portrayed by Kazuki Watanabe.
Mephisto Pheles (メフィスト・フェレス Mefisuto Feresu?) is the Chairman of True Cross Academy's Japanese branch. He is portrayed as a man with more money than sense but is very cheap when it comes to spending on others. After Shiro Fujimoto's death, he is ordered to kill Rin but instead accepts Rin's proposal of becoming an Exorcist and enrolled him into True Cross Academy.[ch. 1] Mephisto is a powerful exorcist (holds a Meister in Honorary Knight, was able to subdue Amaimon while holding a berserk Rin off) and claims that he desires to "bring peace to both Assiah and Gehenna". Despite having served the True Cross for at least two centuries, elements of the Order still consider him suspicious. Their mistrust has its reasons as during the series it is hinted that indeed Mephisto has some secret agenda which involves Rin, working behind the scenes regarding the events around him since the joined the order.
Just like Amaimon, Mephisto is a son of Satan and one of the "Eight Demon Kings", originally known as Samael, the "King of Time". His ability of transforming into a small dog or conjure a giant cuckoo clock is just a sample behind his true powers that allows him to control space and time. Currently going by the name Johann Faust the Fifth in public, Mephisto was also known as "Loki", "Trickster" or "Raven" in the past. He is voiced by Hiroshi Kamiya[1] in Japanese and Sam Riegel in English. In the Blue Exorcist musical, he was portrayed by Yūya Nakahara.[3]
Shiro Fujimoto (藤本 獅郎 Fujimoto Shirō?) is a priest at the Southern Cross Monastery, a Paladin in the True Cross Order (the title awarded to the strongest exorcist), Shura Kirigakure's mentor, and foster father to Rin and Yukio Okumura. He was qualified as an Knight, Dragoon, Doctor, Aria and Tamer through his cait sith familiar, which he called Kuro. Shiro is a man dedicated to his duties and was considered the strongest exorcist. Stealing the demon-slaying sword Kurikara,[ch. 24] Shiro and Mephisto ultimately used the sword to seal the demon heart of the son of Satan and Yuri Egin. Shiro then adopted Yuri Egin's children, Yukio who did not inherit Satan's power, and Rin, full inheritor of Satan's powers.
Shiro is thought to be the only man in the world able to sustain possession by Satan himself and thus Satan was constantly after his body. He fights off Satan's attempts at possessing his body through sheer willpower, but after receiving a mental shock from Rin accusing him of "playing father" and not caring, Satan takes over his body.[ch. 2] After Satan summons the Gehenna's Gate to retrieve Rin, Shiro regains control of his body temporarily and commits suicide in order to stop Satan.[ch. 1] He is voiced by Keiji Fujiwara in Japanese and Kirk Thornton in English.[1] In the Blue Exorcist musical, he was portrayed by Yasuhiko Imai.[3]
Shura Kirigakure (霧隠 シュラ Kirigakure Shura?) is an Upper First Class Exorcist. She trained under the guidance of Shiro Fujimoto to obtain the title "Meister" in Knight and can draw a demon sword from a symbol above her chest when she states, "Devour the Eight Princesses, slay the Serpent". Her sword skills allow her to fight on par with upper level demons like Amaimon. Frequently chipper and obnoxious, Shura is carefree about her job, as she drinks alcohol in excess and oversleeps. She appears to harbor a dark past, as she claims Shiro "came and rescued" her.[ch. 10]
Disguised under a hood as Yamada, one of Rin's classmates, Shura reveals herself when Amaimon attacks Rin.[ch. 9] A Senior Inspector, Shura had orders to investigate the Japanese Branch and eliminate anything she discovered related to Satan. Shura intended to dispose of "her master's mess", Rin, after verifying that Rin was Satan's son, but Rin convinces her he would become a Paladin and prove Shiro was right to let him live. Shura decides to teach Rin how to control his powers in accordance with Shiro's wishes. Later it is revealed that her true mission is to keep an eye on Mephisto, whose real intentions are still shrouded in mystery. She is voiced by Rina Satō in Japanese andWendee Lee in English.[1]