Blue Exorcist Filler List

Rin Okumura is the son of Satan, raised as a human by Father Fujimoto until his demonic heritage awakens. He enrolls at True Cross Academy to become an exorcist and eventually confront his father.

Yukio Okumura is Rin's twin brother, a prodigy who became a licensed exorcist and teacher at True Cross Academy while secretly harboring his own demonic power.

Shiemi Moriyama is a shy classmate raised at her family's botanical garden who befriends Rin and trains as a tamer exorcist with her greenman familiar, Nee.

Izumo Kamiki is a talented tamer-in-training from a shrine-maiden family whose past connections to the Illuminati become central to Season 3.

Ryuji "Bon" Suguro is the son of a temple's head priest, training to become an aria and dragoon exorcist, initially antagonistic toward Rin before becoming a close ally.