Kang Shin-il

as Cheol-soo's grandfather

as Jin-gook's Uncle

as Principal

as Yeon-joo's Father

as Father Yoon

as Investigator Jang

as Jin-cheol

as Mr. Park

as Director Noh

as Detective Squad Chief Ahn

as Mr. Kong

as Dae-ho

as Beethoven

as Narrator

as Director Jo

as Han Sang-soo

as Dr. Hwang

as Manager Choi

as Vice Principal

as Director Choi

as Mr. Kang

as Chief Prosecutor

as Doctor Noh

as Lee Hak-cheon

as Vice president Son

as Eom Chung-il

as Chung-bae

as Chief Lee

as Jo-kang's Dad

as Kim Yoo-sik

as Beom-pyo

as Eom Chung-il

as Chief Oh

as Minister Mun-su

as Geun-jae

as His Majesty

as Eom Chung-il

as Security guard

as Sang-taek's Father

as Ma Chan-sam

as Won Chang-seon

as Jin Mu-dal

as Mon Jin-gwan

as Jung Ji-pyeong

as Jin Tae-soo

as Kim Chi-won

as Han Ju-seok

as Seo Sang-hak

as Im Jong-pil

as Seo Sang Won

as Kang Il-Sub

as Kim Sang-Choon

as Lee Jeong-mun

as Heo Chung San

as Eulji Sung

as Moon Jae-hyun

as Moon Jae-Hyun

as Im Sa-Hong

as Shin Chang-Ho

as Lieutenant General Yoon

as Jang Shin-Woo

as Geum Man Soo

as Lee Yeong-tak

as Ahn In-hwan

as Mr. Jeon

as Han Sung-bok

as Monk Soo-beop

as Squad Chief Detective Hwang

as Lee Ki-chan

as Gong Joon-ho

as Lee Chi-soo

as Deputy Shin Ki-joon

as Lee Choong Ryul

as Choi Pil-Goo

as Kang Woo Nam (Jun Woo's father)

as Hao Yun's Father

as Blind Date

as Jang Pil-Koo

as Seo Jae-soo

as Detective Nam