Leader of the Hyeanjers. 23 years old. Male. Loves teasing others. Nickname is Park Young-sik, though he claims it's not his real name. Homeroom teacher for Class 5. PE teacher. Dating Guest.

Speaks in a dialect. 24 years old. Male. Often stutters. Also called 'Mundi Menpa'. Homeroom teacher for Class 4. Career Guidance teacher.

Cool-headed. 23 years old. Has a voice similar to Hyean's. Male. Sometimes stutters. Homeroom teacher for Class 1. Korean Language teacher. Dating Yunyo.

Female. 22 years old. Good at creating catchphrases. Famous for saying, "Kimchi! If it's not Aoni, I'll take a dump at Gangnam Exit 11 tomorrow!!!" Cheerful. Homeroom teacher for Class 3. Music teacher.

Female. 22 years old. Uses a soft, gentle dialect. For example, she says things like "Hello-siwayo." Homeroom teacher for Class 2. English teacher.

Female. 21 years old. Has a unique voice. Extremely high tension and bright. Homeroom teacher for Class 7. Art teacher. Dating Yeonho.

Female. 20 years old. Studied abroad in Canada. Homeroom teacher for Class 6. Math teacher.

Female. 22 years old. Extremely high tension. Legendary vocal volume. Homeroom teacher for Class 8. Home Economics teacher.