24 years old Male Subject: Science He is sly, playful, and cracks jokes often, but he becomes terrifying if students get too noisy or cause trouble. Height: 179cm Handsome Wears a duck hoodie Black eyes and black hair

22 years old Female Height: 167cm In a relationship with Lee Pinggu Subject: Art Playful and has never been seen getting angry Blue eyes, sky-blue hair, and wears a blue beanie Pretty Likes sky-blue and blue

Male Subject: Korean Age: 22 Height: 184cm In a relationship with Taco So friendly that he is practically friends with the students Often teases Taco as a joke Handsome Brown hair and black eyes

Age: 22 Female Subject: History Often mistaken for a man, but she is a woman Sky-blue bobbed hair and turquoise eyes Height: 165cm Pretty In a 'some' relationship (flirting) with Somyeol Calm and rational

Male Age: 21 Height: 183cm Subject: Ethics Claims to have been street-casted before The most handsome among the teachers Not a very good singer Always carries lemon candies Greyish-black hair and wears a jester mask Black eyes Extremely passionate about ethics

Male Subject: Math Long white hair and grey eyes The scariest teacher when angry In a 'some' relationship (flirting) with Gomsoong Assigns triple the homework regardless of how well students do Extremely 'T' (logical/blunt) Outside of school, he is just a friendly adult, but he is the complete opposite inside the school

Female 20 years old Height: 163cm Subject: English Bright and energetic Assigns a lot of homework but gives a long deadline of about a week; she gets slightly angry if it's still not done Long black hair and grey eyes Wears a blue Valkyrie helmet In a relationship with Yu Gisa

20 years old Subject: Music Height: 178cm Male Seems a bit spacey, very playful, and incredibly loud Wears a hat with the letter 'R' on it Black eyes and greyish-black hair Rarely gets angry, but if the day comes that he does, you'd better be prepared Dislikes mint chocolate On good terms with the students In a relationship with Belky Teases Belky as a joke

21 years old Subject: Physical Education Height: 184cm Light purple hair and purple eyes Male Quiet, but his energy level changes depending on the person; Yu Gisa is a prime example Very close friends with Yu Gisa Not a picky eater, but dislikes mushrooms Rarely gets angry and tends to let students do what they want during PE class