as Da-bin

as Seo Dong-ha

as Yoon-woo

as Dae-gil

as Young-min

as Kang Min-seok

as Kang Han-gyeol

as Sung-kyung

as Kyeong-su

as Gae-dong

as Sung-joon

as Young Jang Seung-gu

as Himself

as Ki-hyeon

as Young Kim Ja-hong

as Young-jae

as Xia Mu (young)

as Suk-yi

as Gam-cho

as Jang Jae Yeol (Young)

as Young Gap-su

as Young Baek Sung-chul

as Joon-gu (young)

as Young Wan-deuk

as Kim Yoon-Yi / Kim Hwan-Yi

as Bad Child 2