The Regular Tardy Student

Kim Seung-ho Jang Seong-hak

Hwang Jeong-sun Mrs. Gwacheon

Jeon Young-sun Suk-jan

Kim Seok-hun Gab-jun

Kim Wun-ha Eul-jun

Choi Ji-hee Bae-yeong

Heo Chang-kang Hwang Hae-san

Lee Kwang-ho Byeong-jun

Kim In-seon Kid

Kim Chil-seong Chief Detective

Jeong Ae-ran Mrs. Choi

Ju Seon-tae Executive Director Ju

Dokgo Sung Bae-yeong's Brother

Lee Ye-min Kim Su-i

Lim Hae-rim Foreman

Park Sang-ik Mr. Yoon

Kim Mi-seon Bugler

Kim Se-ra Sesame Seller

Yum Hea-sook Schoolmistress

Seok Un-a English Teacher