Lee Hyeri

Choo Pil-seon

Park Se-wan

Jang Mi-na

Lee Jeong-Ha

Yoon Chi-hyeong

Jo Aram

Kim Se-hyeon

Bong-sik Hyun

Choo Woo-yong

Lee Chan-Hyeong

Kim Dong-hyeon

Jisu Choi

Bae So-hee

Ji Yi-soo

Hyeondae Jungang High School cheerleader

Jin-mo Joo

Principal

Jonghoon Han

Section chief Kim Hyeong-woo

Mi-do Lee

Korean language teacher, Voice of Bong-goo

Kwon Yoo-na

Kwon Yong-soon