24 years old Male Subject: Science Sly and playful, often cracks jokes, but becomes terrifying if students are too loud 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 Pingu Subject: Art Playful, has never gotten angry Blue eyes and sky-blue hair, wears a blue beanie Pretty Likes sky-blue and blue

Male Subject: Korean Age: 22 Height: 184cm In a relationship with Taco Friendly enough to be like 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 male, but is female Sky-blue bobbed hair and turquoise eyes Height: 165cm Pretty In a 'some' relationship with Somyeol Calm and rational

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

Male Subject: Math Age: 22 Long white hair and grey eyes The scariest teacher when angry In a 'some' relationship with Gomsoong Assigns more than triple the homework regardless of whether students do it well or not Extreme T (Thinking) type Seems like a friendly adult outside of school, but is the complete opposite inside 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. 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 Doesn't get angry, but if he ever does, you'd better be prepared Dislikes mint chocolate Has a good relationship with students In a relationship with Belki Teases Belki as a joke

21 years old Subject: PE 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 hates mushrooms Doesn't get angry easily and tends to let students do what they want during PE class