School Nurse. Hair and Eyes: Silver-white hair with a faint violet tint and purple eyes. Clothing: A light-colored long coat and a long, thick muffler. Physique: Tall and sturdily built. Personality: Duality. Innocent and friendly like a child, but has a side that threatens people while maintaining a smile. Speech: Uses soft, casual sentence endings like "...right?" or "...you know?"

Foreign Language Teacher. Hair and Eyes: Short blonde hair with a characteristic cowlick and blue eyes. Wears "Texas-sized" glasses. Physique: Muscular and well-built, though he worries about eating too many hamburgers. Personality: Heroic complex. His catchphrase is "I'm the hero!" and he has a strong sense of justice. Self-centered. Loud-voiced and tends to push things through without listening to others. Hobbies: Hamburgers, Cola.

Chemistry Teacher. Thick eyebrows are his biggest charm point. Hair and Eyes: Slightly messy blonde hair and beautiful green eyes. Personality: Tsundere. Foul-mouthed and cynical, but deep down he's lonely and caring. Hobbies: Black tea, baking (though he is a catastrophically bad cook).

Art Teacher. Hair and Eyes: Brown hair with a distinctive "kurun" cowlick jumping out from the left side of his head. Usually keeps his eyes closed in a squint, but they are brown when open. Physique: Small stature. Personality: A bit of a coward, cheerful, and a womanizer. Bright, friendly, and loves cute girls and flirting. Loves art and food—pasta, pizza, cheese, singing, painting, and sleeping above all else.

Math Teacher. Hair and Eyes: Blonde hair slicked back perfectly and sharp blue eyes. Physique: Tall and muscular with a solid build. Personality: Values discipline. Loves manuals and rules, and is thorough about cleaning and organization. A hard worker who is always busy looking after Feliciano and getting dragged into his pace. Hobbies: Walking his dog, beer, making sausages, baking, reading.

Narcissist. Health and Physical Education Teacher. Refers to himself as "Big Brother." On bad terms with Arthur. Hair and Eyes: Long, wavy blonde hair and seductive blue-violet eyes. Facial Hair: Has light stubble around his mouth and chin, exuding adult sex appeal.

Japanese Language Teacher. Hair and Eyes: Short black hair in a style close to a bob, with black eyes that are hard to read. Physique: Small and slender. Looks younger than his age. Personality: Serious, polite, and humble. Usually responds with "I will do my best to accommodate you."

Social Studies Teacher. Black or dark brown hair tied back in a ponytail. Brown eyes. Has a large scar on his back. Baby-faced, but occasionally shows a detached, sage-like expression. Personality: Refers to himself as the big brother or grandfather figure of the world. His speech sounds elderly, ending sentences with "...aru yo" or "...yoroshi." Loves cute things like pandas and Hello Kitty.