Series & First Appearance
Kalego Naberius appears in the anime and manga series Welcome to Demon School! Iruma-kun (Japanese: Mairunovich) created by Osamu Nishi. Kalego made his debut in Chapter 1 of the manga and Episode 1 of the anime adaptation, which was produced by studio Bandai Namco Pictures.
Profile at a Glance
Kalego Naberius is a demon that appears to be in his late 30s but has an official age that is considerably higher due to his species. He serves as a prestigious and short-tempered professor at Barbirus Academy, where he teaches various subjects, including magic. His affiliations include the faculty of Barbirus Academy and he is contracted to the human protagonist, Iruma Suzuki, marking him as an important figure in Iruma’s journey in the demon realm. His signature abilities include a potent magical prowess and control over his familiar, Cerberus.
Personality & Motivations
Kalego is characterized by a stern and often grumpy demeanor, displaying a strong dislike for those who exhibit a laid-back attitude, particularly among demons. Despite his gruff exterior, he harbors a deep-seated concern for his students’ development, albeit often masked by his harsh teaching style. His primary motivation is to uphold the prestige of Barbirus Academy and the education of his students. He can be seen struggling with the human nature of Iruma, which sometimes frustrates him, leading to humorous interactions. Kalego’s catchphrases often reflect his annoyance, particularly when dealing with Iruma’s antics.
Abilities / Powers
Kalego possesses a vast array of magical abilities, allowing him to wield various powerful spells. His combat style leans towards magic-based attacks, utilizing potent energy blasts and barriers to defend and attack. He is also known for his ability to summon his familiar, Cerberus, a three-headed dog that serves as both a protector and a source of additional magical might. However, Kalego’s powers focus heavily on his scholarly knowledge rather than raw combat ability, and he occasionally struggles with more chaotic magical influences from his students. As the series progresses, he begins to show evolution in his teaching methods and a gradual change in how he views Iruma’s human nature.
Major Story Arcs & Growth
Kalego’s character development is significantly shaped throughout various arcs in the series. One pivotal moment occurs during the "Cultivation" arc, where he learns to appreciate Iruma’s unique qualities as a human and the beneficial impact he has on his classmates. This marks a turning point for Kalego, as he starts to loosen his grip on his strict pedagogical approach. Another significant plot point arises during the “Demon School Festival” arc, where his protective instincts towards Iruma and his classmates shine, showcasing a more compassionate side beneath his harsh exterior. These moments contribute to both his character growth and the overarching themes of acceptance and understanding within the series.
Notable Relationships
Kalego has a multifaceted relationship with several key characters. His bond with Iruma is particularly important, characterized by a mentor-mentee dynamic that evolves into mutual respect despite their contrasting natures. He also shares a contentious relationship with other faculty members and students, particularly the overly carefree and laid-back characters like Azazel Amerhauser, which often leads to comedic tension. Kalego’s interactions with Cerberus, his familiar, provide a humorous contrast to his serious demeanor, revealing a softer side of his character.
Iconic Moments & Quotes
One of Kalego’s most memorable moments occurs in Episode 4, where his strict lesson about discipline hilariously backfires due to Iruma’s influence, creating a chaotic yet endearing classroom atmosphere. His line, “If you can’t follow the rules, you won’t last long here!” accurately encapsulates his harsh teaching style while also highlighting the growth of his students, especially Iruma. This scene resonates strongly with fans, emphasizing the mix of fear and affection that Kalego inspires in his students. Additionally, his interactions with Cerberus, showcasing his frustration yet comical affection, create many memorable scenes that fans appreciate.
Trivia & Behind-the-Scenes
Kalego Naberius has become a fan favorite among viewers, representing a blend of a strict educator archetype with uniquely humorous traits. In popularity polls, he has attracted over 257 favorites, reflecting his impact on the fanbase. The character is voiced by Nobunaga Shimazaki in the Japanese version and by Ben Diskin in the English dub, both of whom bring distinct traits to his grumpy yet endearing persona. The design of Kalego draws on traditional demon motifs while integrating modern anime aesthetics, making him visually striking and memorable. Furthermore, his portrayal often serves as a comedic foil to Iruma’s more carefree characteristics, creating a dynamic that is central to the series’ charm.
Overall, Kalego Naberius stands as a complex and noteworthy character in Welcome to Demon School! Iruma-kun, contributing to both the humor and emotional depth of the series.







