Main characters
Teito Klein (テイト·クライン, Teito Kurain)
Voiced by: Mitsuki Saiga
The protagonist of the story. His real name is revealed to be Wahrheit (German for truth) Tiashe Raggs, son of Weldeschtein Krom Raggs, and he is the prince of the former Raggs Kingdom. However, after being entrusted with the Eye of Mikhail during the invasion by the Barsburg Empire, his identity was hidden and he was raised by his uncle, Fea Kreuz, as a church orphan. Upon the death of Kreuz, he was made into a combat slave (Sklave in german), but eventually entered the Barsburg military academy and became known as a star pupil. He is a clever student and very talented, making him one of the best students despite other students' mockery.
At the beginning of the story, Teito is a cold and serious student due to his only memories being those of a combat slave whose only purpose was to kill criminals. He is initially cold to Mikage as well, although the two eventually become good friends. Strangely, according to the academy chairman, Miroku, Teito's greatest weakness is his compassion, despite all the hardships he has gone through.
Teito is very skilled with the Bascules, even exceeding the Zaiphon limit twice for it during training. He is very agile and an excellent runner after having trained with Castor's puppets, and manages to get through the examinations on his first try with Hakuren and he became Frau's apprentice. His slave number was 2741.
It is hinted by Mikhail that Teito is the best vessel he has ever had. Teito receives extra abilities as the master of the Eye of Mikhail, such as advanced hearing and a sixth sense. More are said to be sleeping within him. He was made the master of the eye of Mikhail due to the pope inserting Verloren into his body. The Eye was used to seal Verloren's body and protect Teito's soul, making him the Pandora's Box.
Teito ranked first in the latest popularity poll in Monthly Comic Zero Sum.
Frau (フラウ, Furau)
Voiced by: Junichi Suwabe
A perverted Bishop who hides porn in the library (even though it is not allowed for priests to read porn), he saves Teito's life when Teito falls from his hawkzile. He is the member of the 07-Ghosts known as 'Zehel'. He finds Mikage (as a small dragon) for Teito and accidentally becomes Teito's 'Master' when he attempts to remove Teito's promise collar, thereby invoking a blood contract. This collar gives Frau the ability to use three commands on Teito: bind, sleep and pain. For all his teasing, Frau also keeps Teito's spirits up with impromptu pep-talks. His relation with Ayanami is not yet known. Frau is the only Ghost who can wield Verloren's scythe, though how he managed to get this scythe is currently unknown. His catch phrase before every battle is "May God be with you". Frau was ranked second in the latest popularity poll in Monthly Comic Zero Sum.
Castor (カストル, Kasutoru)
Voiced by: Susumu Chiba
Another bishop, he convinces Teito to take the examination to enter the priesthood. The training he puts Teito through is vigorous and often involves his "dolls", life-sized puppets he controls with Zaiphon. He is one of the 07-Ghosts, "Fest". He was the heir of the Hausen House (which symbolize Fest), Xinglu Hausen, who "passed away" ten ago. He was voted fifth in the latest popularity poll in Monthly Comic Zero Sum.
Labrador (ラブラドール, Raburadōru)
Voiced by: Kōki Miyata
A bishop whose hobby is gardening and brewing herbs to make medicine. He was first introduced when Frau found Teito and brought him back to the church. He gives Teito a flower of protection at the start of the manga which later saves his life during an encounter with a Kor. He also gives Teito a drink made from sweet flowers to heal his "wounds of the heart". During battles, he is able to use flowers and vines as weapons with his manipulation Zaiphon. He is also able to communicate with flowers. It has been confirmed by an omake, and later in chapter 46 of the manga, that he is indeed a Ghost, known as 'Profe'. His powers as a Ghost grant him the gift of foresight, which allowed him to aid Teito before Teito's first encounter with a Kor. He does not wish to kill Veloren, only for him to live in the world as a proper human.
Hakuren Oak (ハクレン·オーク, Hakuren Ōku)
Voiced by: Jun Fukuyama
Teito's roommate at the church and, at first, his self-proclaimed rival for the priesthood exam. They first meet soon after Mikage's death when Hakuren walks by Teito in the church. Teito mistakes him for Mikage since they look somewhat similar, but upon looking closer, realizes it is someone else. Teito then realizes that he is Shuri Oak's brother. Upon seeing that Teito is training to become a bishop a well, he states that Teito is now his rival. Teito thinks there is something about Hakuren that is familiar to him until Hakuren asks Teito whether middle school children were starting to take the exam as well. Teito suddenly realizes that Hakuren sounds a lot like Shuri Oak, his tormentor from the military academy. Eventually, they apologize for being so rude to each other and become friends. After passing the bishop exam, he became Castor's apprentice. Hakuren was ranked fifth in the latest popularity poll in Monthly Comic Zero Sum.
Ayanami (アヤナミ)
Voiced by: Shō Hayami
The main antagonist, he is the man who killed Teito's Father in the war against Raggs and seeks the Eye of Mikhail. Later in the manga, a picture of the Raggs royal family is shown, revealing that Ayanami is Teito's uncle. Because of his birth, some colleagues dislike him and constantly give him a hard time. On the surface he is respected, as he is greeted by salutes by officers whose ranks are lower than his, but some officers talk about Ayanami disrespectfully behind his back as well. In one chapter in the manga, when the Barsburg officers hear that Ayanami is leading 500 soldiers to Antwort to reinforce them, they say that the Black Hawks (Ayanami and his personal subordinates) are monsters and they do not want to fight with them. He is also the reincarnated Verloren.
Mikage (ミカゲ, Mikage)
Voiced by: Daisuke Namikawa
Teito's best friend, Mikage comes from a family of stewards. Despite the fact that his closeness with Teito makes him a target of some students' ill will in the academy, he remains a bright and cheerful person. His relationship with Teito involves a lot of Mikage teasing Teito, Teito beating him up in return, and his urging Teito to eat more. The two are very close, promising each other that they will die together and will always be "the best of friends". Mikage also teaches Teito about meeting friends and having compassion. After learning of Castor's family's grief for their son, he tells Seilan, "Mikage had told me... that if two people were together, sadness would also be halved..."
Mikage is killed, but later reincarnated as a small, furry, pink dragon. Frau explains that it's because he wished to protect Teito, no matter the form. Mikage is easily recognizable by the small, X-shaped scar on his chin; he got it a long time ago when he was sparring with his older brother. Burupya has a similar scar on his head. He ranked third in the latest popularity poll in Monthly Comic Zero Sum.
Ouida
Voiced by: Romi Park
He helped Teito in the Bishop Exam by giving him some of his Zaiphon. He has a younger brother named Liam.
