27 years old. He shows no bias in rewards or punishments, treating all students equally and strictly, even those from high-ranking noble families. This has led to rumors of him being cold-hearted, but he truly cares for his students. He is exceptionally handsome with a toned physique, enough to make most women fall for him. He has been at the academy for less than a year. Due to a constitution where mana leaks out just by breathing, he cannot control the entity known as 'God' without taking mana potions (a secret he hides from everyone except U.N. Owen). Even while living in hiding, he continues to search for Relics. He maintains a false identity as James Moriarty. He is blunt toward his own people but cherishes them deeply.

A student taught by Ludger. She possesses a unique constitution that allows her to perceive magic through synesthesia and is a genius with talent far beyond other students. She has an older brother and a younger sister, but as the child of a concubine, she is thoroughly ignored by her family. Her obsession with taking the top spot in every subject at the academy stems from the hope that such achievements might make her father look at her at least once. She attends Ludger's classes.

A first-year student who possesses Anti-Magic, a unique branch of magic that nullifies other spells. He has the personality and constitution of a hot-blooded shonen manga protagonist. He purely loves magic. However, he is a dense idiot whose behavior often makes those around him hold the back of their necks in frustration. Despite this, he is kind-hearted and highly sociable, maintaining very smooth relationships with non-nobles. He attends Ludger's classes.

An artificial human made of steel and clockwork, commonly referred to as an 'Automaton'. Originally a child named 'Arte' from the inn where Ludger stayed while using the name 'James Moriarty' in the Kingdom of Delica. During a child kidnapping incident disguised as an automaton soul-transfer experiment, Arte went to find her missing sister but was beaten to death by the culprits posing as police. Ludger, witnessing the aftermath, slaughtered the culprits in a rage. Seeing the dying Arte, he took her body while the soul still lingered and used the villains' automaton project to resurrect her in the prototype automaton Alpha. However, she has no memories of her time as a human.

24 years old. He hates fighting to the point of being a coward, but his combat power is the strongest in U.N. Owen. He possesses the power to transform into any animal that bites him. Originally, he was at the mercy of the animal's instincts, but he has now gained control. However, depending on the animal, his mental strength sometimes fails to keep up. He cannot control the transformation ability by will, and animals tend to find him so friendly they try to bite him on sight, making daily life difficult. He is capable of 'requesting' favors from animals. After meeting Ludger, he obtained a neutralizing agent to cancel transformations and has since served as Ludger's information gatherer and handyman. By stabbing himself with a dagger made from the tooth of the Beast of Gévaudan, he can transform into that beast. However, the destructive urge of the Beast of Gévaudan far exceeds Hans's control, so while he can transform, he cannot control himself. He calls Ludger Cherish 'Big Brother' and they share a fairly special bond.

Casey's assistant, a beautiful girl with blonde hair and blue eyes. Her true identity is a prototype from the same automaton experiment as Arpa. She is actually Arpa's younger sister, resurrected in a prototype Alpha with the soul of the boy Ludger cared for, but she has no memories. After the incident ended, she was discovered by Casey, who had come to investigate the automaton experiments, and has traveled with her ever since. She has no memories of her human life.

A new teacher in charge of Spiritology. She loves ghost stories. Due to her incredibly pure personality, she gets along well with others and is highly popular among students. She has developed feelings for Ludger following a recent incident. She is a colleague of Ludger's from the same appointment year.

A first-year student with non-attribute mana. She is suspected of having a unique ability called the 'Judgment Eye,' but she is unable to use it. She has no memories prior to the age of ten. She attends Ludger's classes.

A female student from a fallen noble family who hangs out with Aidan and Leo. Because her family has fallen, she is desperate to achieve great deeds to restore her house. After seeing Aidan's performance in a duel, she fell completely in love with him and secretly fends off other women who approach him. Of course, Aidan, having the personality of a typical dense protagonist, hasn't noticed Tacy's feelings at all. She has a tsundere personality. She attends Ludger's classes.

A commoner student who hangs out with Aidan and Tacy. Unlike Aidan, he has a fairly intellectual personality but looks upon nobles with considerable disdain. He attends Ludger's classes.