Choi Woo-shik
Lee Tang (8 eps)
Son Suk-ku
Jang Nan-gam (8 eps)
Lee Hee-jun
Song Chon (8 eps)
Kwon Da-ham
Ahn Yong-jae (8 eps)
Oh Min-ae
Lee Tang's mother (6 eps)
Hyun Bong-sik
Park Choong-jin (6 eps)
Kim Yo-han
Noh Bin (6 eps)
Kim Min-ju
Lee Young (5 eps)
Heo Seon-haeng
Lee Tang's father (5 eps)
Park Ji-han
Jung Gang-hyo (4 eps)
Jung Yi-seo
Sun Yeo-ok (4 eps)
Yang Mal-bok
Shin Jung-hee (4 eps)
Jung Hoe-ryn
Eun-seon (3 eps)
Choi Sun-woo
Gyeong-hwan (3 eps)
Baek Yu-sung
Lee Jin-seong (3 eps)
Seo Jae-kwon
Kang Jae-joon (3 eps)
Park Kyung-geun
Chief of crime department (3 eps)
Oh Woo-ri
Mi-young (3 eps)
Lee Ji-hoon
Moon Myeong-jun (3 eps)
Nam Jin-bok
Ji Gyeong-bae (2 eps)
Oh Hye-won
Lee Yoo-jung (2 eps)
Lee Sang-won
Detective Kim (2 eps)
Jang Ji-an
Jang Nan-gam (young) (2 eps)
Kang Jee-seok
Jang Nan-gam (teen) (2 eps)
Lee Ju-won
Jang Gap-soo (2 eps)
Jo Hyun-wu
Yeo Boo-il (1 eps)
Mun Yeong-dong
Lee Gwang-hoon (1 eps)
Choi Mi-geum
Club senior (1 eps)
Kim Keum-soon
Gwang-hoon's wife (1 eps)
Jang Sun
Jae-soon (1 eps)
Lee So-won
Kang Yeon-seo (1 eps)
Lee Jung-ok
Kang Sang-mook (1 eps)
Joo In-young
Kang Jae-joon's mother (1 eps)
Go Do-ha
Delivery man (1 eps)
Lim Se-joo
Choi Gyeong-ah (1 eps)
Song Hyeong-su
Noh Eui-cheol (1 eps)
Roh Jae-won
Ha Sang-min (1 eps)
Han Yoon-ji
Hyeon-ji (1 eps)
Lee Joo-young
Choi Gyeong-ah's mother (1 eps)
Gun Woo
Choi Gyeong-ah's ex-boyfriend (1 eps)
Jang Jun-whee
Team leader (1 eps)
Han Ji-an
Hyeong Ji-soo (1 eps)
Seung Eui-yeol
Hyeong Jung-guk (1 eps)
Jang Ui-don
Congressman (1 eps)