Real Name: Choi Seung-cheol. Date of Birth: August 8, 1995. Hometown: Daegu, South Korea. Blood Type: AB. Sharp facial features. 178cm. Social Studies teacher. Sadistic toward students he likes.

Real Name: Yoon Jeong-han. Date of Birth: October 4, 1995. Hometown: Seoul, South Korea. Blood Type: B. Versatile personality. 178cm. Ethics and Morals teacher. Sadistic toward students he likes.

Real Name: Joshua Jisoo Hong. Date of Birth: December 30, 1995. Hometown: Los Angeles, California, USA. Blood Type: A. Height: 179cm. Always calm, kind, and elegant in behavior. English teacher. Sadistic toward students he likes.

Real Name: Wen Junhui. Date of Birth: June 10, 1996. Hometown: Shenzhen, Guangdong, China. Mischievous with many mysterious behaviors. 182cm. Art teacher. Sadistic toward students he likes.

Real Name: Kwon Soon-young. Date of Birth: June 15, 1996. Hometown: Namyangju, Gyeonggi-do, South Korea. Eyes resemble a tiger. 177cm. Often told his face looks scary, but his personality is just bright. Physical Education teacher. Sadistic toward students he likes.

Real Name: Jeon Won-woo. Date of Birth: July 17, 1996. Hometown: Changwon, Gyeongsangnam-do, South Korea. Blood Type: A. Contrary to his sharp, low-toned appearance, he is usually laid-back and has a calm personality, watching over the members kindly. 182cm. Mathematics teacher. Sadistic toward students he likes.

Real Name: Lee Ji-hoon. Date of Birth: November 22, 1996. Hometown: Busan, South Korea. Blood Type: A. Height: 164cm. Fair skin and eyes that crinkle when he smiles are his charm points. Music teacher. Sadistic toward students he likes.

Real Name: Kim Min-gyu. Date of Birth: April 6, 1997. Height: Approx. 187cm (tallest in the group). Blood Type: B. Hometown: Anyang, Gyeonggi-do, South Korea. In addition to his overwhelming style, he is very handy with cooking and assembling furniture. Has a friendly, puppy-like charm and a positive personality loved by everyone. Home Economics teacher. Sadistic toward students he likes.

Real Name: Lee Seok-min. Date of Birth: February 18, 1997. Hometown: Seoul. Height: 178.4cm. Blood Type: RH-O. Friendly and kind to everyone, with a bright and playful personality. Real Name: Xu Minghao. Date of Birth: November 7, 1997. Hometown: Anshan, Liaoning, China. Has experience in Chinese martial arts (Wushu) and utilizes his outstanding physical abilities. 180cm. Japanese Language teacher. Sadistic toward students he likes.

Real Name: Xu Minghao. Date of Birth: November 7, 1997. Hometown: Anshan, Liaoning, China. Has experience in Chinese martial arts (Wushu) and utilizes his outstanding physical abilities. 180cm. Science teacher. Sadistic toward students he likes.