Giyu Tomioka (P.E. & Guidance): A strict, "spartan" teacher with a stony expression. He is socially awkward and oblivious to his unpopularity, which has led to so many PTA complaints that they are nicknamed the "Parents-Tomioka Association". He often uses physical discipline, like punching Zenitsu for his natural hair color or chasing Tanjiro with a wooden sword for wearing earrings.
Kyojuro Rengoku (History): The most popular teacher on campus due to his boisterous, fun-loving, and passionate nature. He is so intense about history that he hurls students and starts mock cavalry battles during class. He is a "big eater" who has been known to bring a rice cooker to school and cook in the middle of the night.
Tengen Uzui (Art): Known as "Gangsta Sensei," he is flamboyant and believes that "art is an explosion," which sometimes leads him to use real dynamite in the classroom. He is rumored to have been a former gang leader and is known for shouting at his students.
Sanemi Shinazugawa (Math): Extremely hot-tempered and abrasive. He is infamous for throwing a student out of a window for saying math is useless in the future. Despite his rough exterior, he is notably kind to elders, women, and children, even if his intense look makes kids cry.
Obanai Iguro (Chemistry): Highly cynical and strict, particularly toward male students. He has a severe "allergy" to women, breaking out in cold sweats when they are near, and uses his mask and snake to maintain distance. He is known to "crucify" students' failed tests to a post and shoot them with bottle rockets.
Gyomei Himejima (Civics): Although his massive size and strength initially terrify students—he can lift a chalkboard with one hand—he is a gentle, cat-loving soul. He is so fatherly that students frequently call him "Dad" by accident.
Shinobu Kocho (Pharmacy/Science): A top beauty of the academy who is secretly feared by many teachers. She is sharp-tongued and competitive, easily winning the "Miss Kimetsu" title every year.
Kanae Kocho (Biology): Elegant, classy, and universally loved. She is gentle but mysterious, sometimes seen chanting and sticking talismans on walls.
Kyogai (Music): An emotionally unstable teacher who primarily uses a tsuzumi drum. He is often somber and moody, frequently complaining that his students are tone-deaf.
