Ju Jin-mo

as Director Bae Seok-dong

as (segment "There's no one here")

as Gyu-sang

as Principal

as Professor Oh

as Mr. Hong

as Man-gi

as Jjak-kwi

as So-pal

as Song Kyeong-soo

as Inspector Yang

as National Intelligence Service Senior Official

as Captain Park

as Jik Je-hak

as Judge

as Sam-gwan's Uncle

as Corrupt Official

as Laundry

as Guk Jang

as Director Go

as Detective

as Judge

as Son Guk-won • 5 eps

as Yang Seon-chul • 50 eps

as Lord Pagun • 12 eps

as Baek Dal-ha • 12 eps

as Kim Jae-yeol • 10 eps

as Mayor of Seoul • 6 eps

as Lee Young-ho • 8 eps

as Kim Deok-bae • 14 eps

as CEO Hwang • 16 eps

as Kim Gye-hee • 6 eps

as Park Jin-Woo • 16 eps

as Jo Suk's Father • 20 eps

as Director Jang • 32 eps

as Park Joong-Ho • 64 eps

as Lee Myung-Deuk • 16 eps

as Bong Pil's father • 16 eps

as Lee Kyu-chul • 16 eps

as Yoon Jung-Gun • 40 eps

as Kwon Hyun-seob • 16 eps

as Lee Myeong-han • 16 eps

as Kang Ki-young • 10 eps

as Ham Sung-hoon • 16 eps

as Gang Woo-sik • 18 eps

as Ban Chang-ho • 20 eps