This is a list of characters from Hell Teacher: Jigoku Sensei Nube.

Doumori Elementary School staff

Also commonly known as , is a 25-year-old man with two jobs. Firstly, he is a powerful exorcist who deals with the affairs between humans and yōkai in his adopted home of Doumori. Secondly, he is the teacher of class 5-3 at Doumori Elementary, both guiding and protecting them from the spiritual encounters they face. Both jobs are equally important to him: he chooses to protect the innocent and punish the wicked, both human and yōkai, focusing primarily on those still young and innocent enough to need a guardian, as his teacher had done before her death. Nūbē is trained as an exorcist and has many means of facing his encounters with yōkai. The most powerful of these tools is the , the result of a battle with a powerful oni at his former school where he teaches. When the Oni attacks one of his pupils, Nūbē is forced to seal its power within the stump where his left hand should be. This grotesque appendage is sealed within a black glove on his left hand. If unsealed, it allows him to use his own spiritual energies combined with the powers of the Oni to attack evil opponents and for other purposes, such as communicating with other yōkai or freeing spirits. While Nūbē typically can control the power, he can only use a fraction of its true powers and abilities, as the Oni is so powerful that Nūbē himself cannot fully control it and it can consume his body and will if he becomes overwhelmed. The Oni is actually being held by Nūbē's Sensei, who died being consumed by the Oni when trying to save Nūbē. Nūbē's teacher was also a powerful exorcist, and her ultimate sacrifice, which led to her death, is the reason Nūbē wanted to become both a teacher and an exorcist. Other than the demon hand, Nūbē employs various other spiritual artifacts in his battles. The , a white paper-like sutra, is used by Nūbē to surround and seal certain yōkai phenomena, either to restrain them or to exorcise them without the need for the Demon Hand, as in the case of a blind ghost child. He also possesses a crystal ball that can render certain spirits and phenomena visible to the human eye, such as when he spotted something on one of his students, as well as a set of prayer beads that he can use for attacks or as part of his summoning. Additionally, he eventually creates his own kudagitsune, a product of another kudagitsune he borrows from the itako-girl Izuna, along with his demon hand. Nūbē has also mastered several spiritual techniques, including the "youshin jutsu" (a technique that allows him to create a separate spiritual body that can move independently when he is asleep or meditating) and the ability to separate his physical body and spirit in order to transcend into other realms, such as when he challenges the ghost of a swimmer. Personality-wise, Nūbē can exhibit both a jovial, fun-loving demeanor and a serious, focused attitude, depending on the context. When it comes to matters of spiritual or educational importance, he is a dedicated individual committed to carrying out his responsibilities flawlessly. This seriousness enables him to effectively handle one yōkai crisis after another and also drives him to ensure that his students receive the education they need without any distractions or oversights, despite the challenges posed by some of his underachieving male students. Outside of his professional duties, however, Nūbē reveals a more carefree, almost happy-go-lucky side, characterized by numerous faults. He frequently pursues romantic interests, particularly women with voluptuous figures, and often spends his limited funds on activities like pachinko. He regularly experiences financial difficulties, eagerly awaiting payday while subsisting on the school cafeteria's offerings or whatever freebies he can acquire, and occasionally devises schemes to get rich quick, even if it means resorting to the demon hand. Throughout it all, he endeavors to avoid the scorn and trouble stirred up by his rivals. Despite his occasional discontent with the teaching profession, Nūbē acknowledges that it does have its rewards.

Is a head teacher of class 5-2 at Doumori Elementary regarded as the "madonna" of the school—a term referring to a beautiful unmarried woman. She is deeply committed to her role as a teacher, displaying seriousness and dedication in her work. However, she also exhibits nervousness and overt fear when confronted with the unknown, particularly the spirits and yōkai that frequently manifest at the school. This aspect of her personality presents a dilemma for Nūbē: while he is attracted to her beauty and fantasizes about her, he enjoys teasing her incessantly about her sensitivity to the supernatural and her reactions to his artifacts, often facing her subsequent wrath. Initially, Ritsuko appears to be the least likely person for Nūbē to form a romantic relationship with. Despite his attempts to win her affection, she rebuffs him due to her apprehension about his spiritual preoccupations. However, as the series progresses, she gradually gains the courage to confront the yōkai threats, leading her to recognize Nūbē's altruistic efforts in assisting those in need, including the students. As her feelings for the male teacher develop, she endeavors to establish a closer bond with him. This progression draws the ire of Yukime, a yuki-onna who considers herself to be Nūbē's true love. The ensuing love triangle between the two teachers and the spirit girl becomes a central theme in the latter part of the manga, as Nūbē is compelled to navigate his emotions and decide whom he truly wants to spend his life with.

Is a teacher frequently seen among the 5th Grade staff, likely serving as the gym teacher for that grade. Often sporting a jumpsuit and characterized by his disheveled hair, beard, and glasses, he occasionally offers advice and shares spiritual knowledge based on his own experiences. However, he also possesses some unsavory habits, such as carrying cards for various adult shops in his jumpsuit, a fact inadvertently revealed when they spill out of a borrowed suit in front of Nūbē. Although it remains unclear whether he is officially a 5th Grade teacher, Ishikawa is commonly seen in the company of the other 5th Grade teachers. Additionally, he has a peculiar aversion to showers, sometimes going without one for more than a month, and harbors a fetish for wearing women's undergarments—an interest that proves problematic for Nūbē when Minki, the sister of the demon hand (Bakki), arrives from hell to reclaim them.

Is the fiery leader of class 5-1 at Doumori Elementary, and another unique blend of exorcist and teacher. Unlike Nūbē, however, he attributes all phenomena to plasma rather than spiritual power. This fundamental difference in belief often pits the two teachers against each other in heated debates over the true nature of the various problems plaguing the school. Consequently, students in both classes find themselves divided based on their loyalty to their respective homeroom teacher's beliefs. Armed with his scientific knowledge and research, Ōtsuki utilizes an array of devices and inventions to investigate and combat these threats—a method reminiscent of the scientific research and technology employed in Ghostbusters. While Ōtsuki initially plays a prominent role in the story, he gradually recedes into the background as the manga progresses. In the 2025 anime adaptation, his name is changed to who doesn't wear a glasses.

Is an administrative head of the elementary school, the principal diligently strives to maintain order and efficiency despite the numerous bizarre spiritual occurrences happening under his jurisdiction. Whether or not he was aware of Nūbē's dual roles as an exorcist and a teacher when he joined the school, he quickly recognizes it as a valuable asset to his staff and the overall well-being of the institution.

Not much is known about this flat-topped, glasses-wearing administrator, aside from his role as an associate working alongside the principal to manage Doumori Elementary. He is often seen in the background with his boss and the other teachers and staff of the school.

She is one of the newer teachers at Doumori Elementary, heads the first-grade class of 1–3. However, unlike Nūbē's exorcisms, her interests and studies lie in the occult and witchcraft. She pursued her studies in a German university and across Europe to enhance her knowledge and skills in such areas. Despite her youthful appearance, she is actually 28 years old, several years older than the more experienced Nūbē. Nūbē disapproves of her obsession with the dark arts and often reprimands her for practicing them. The fact that her 1st-grade classroom is located two floors below his 5th-grade class occasionally exposes him to the influence of her magic unknowingly, until he intervenes to stop her antics. Some of her various magical skills include casting curses, devil's summoning, performing transformations, creating voodoo dolls, and even flying on her own little broomstick, not to mention wearing a flat-top hat that transforms into a witch's hat whenever she performs her magic. Upon her arrival at the school, Kuroi becomes infatuated with her male colleague and decides to use her magic to try and win him over, even going as far as sealing his demon hand inside a cute handmade glove. However, after repeatedly being scolded by Nūbē, and possibly observing the romantic pursuits of both Ritsuko and Yukime, she resorts to summoning her own demonic love slave in the form of the "Western Devil" Beberububu.

Students Class 5-3

He is the main male student character in the series and one of Nūbē's most active supporters. A transfer student who arrives at Doumori Elementary at the beginning of the manga, he initially doubts his teacher's claims about exorcisms but eventually becomes convinced after being saved from one spiritual problem after another. Typical of many young shōnen leads in manga and anime, Hiroshi is the courageous, heroic male of the class who always stands up to fight against any obstacle, whether human or yōkai, regardless of whether it makes sense. His favorite pastime is playing soccer for the school. However, Hiroshi's downside is his own stupidity: he has some of the worst grades in Nūbē's class and once set a record for receiving a hundred consecutive 0s on his tests. This lack of academic prowess causes him to make outlandish comments on simple ideas and leads him into many of his yōkai-related problems. He even wet his pants once after being scared by a ghost in a restroom. His character's name pays tribute to the main male lead of The Gutsy Frog, a classic 1970s Weekly Shōnen Jump series that Shou and Okano used as an influence for "Nūbē".

She is possibly the student who trusts and likes the teacher the most. Her first encounter with him actually happened several years earlier when Nūbē, then a college student, saved Kyōko, then a little girl, from an inari spirit (though it is suggested they may have met earlier in a past life). She is regarded as one of the most caring characters, often looking after Nūbē and the rest of the class and displaying an emotional attachment to them whenever something happens to someone she cares about. Despite appearing cute and innocent at first, Kyōko can have a violent temper that can drive her friends and even her teacher a bit crazy, although it does tone down later on. Initially, she cannot stand Hiroshi when he joins the class, but she gradually develops hidden romantic feelings towards him as the series progresses. Conversely, she consistently has a love/hate rivalry with her closest friend, Miki Hosokawa, typically over physical matters such as her flat chest, big butt, and Sailor Moon-esque pigtails. Her name pays homage to the female lead of Dokonjyou Gaeru, where, not coincidentally, this Kyōko is also in love with a Hiroshi.