Son Dam Bi
Choi Hyang Mi [Dong Baek's friend]
Support Role
Oh Jung Se
Noh Gyu Tae [Dong Baek's landlord]
Support Role
Yeom Hye Ran
Hong Ja Young [Gyu Tae's wife / Divorce lawyer]
Support Role
Ji Yi Soo
Jessica / Park Sang Mi [Jong Ryul's wife]
Support Role
Go Doo Shim
Kwak Deok Sun [Yong Sik's mother]
Support Role
Kim Kang Hoon
Kang Pil Goo [Dong Baek's son]
Support Role
Jeon Bae Soo
Byeon Bae Su [Police chief]
Support Role
Kim Sun Young
Park Chan Sook [Jin Bae's wife]
Support Role
Kim Dong Hyun
Song Jin Bae [Chan Sook's husband]
Support Role
Kim Mi Hwa
Kim Jae Young [Chan Sook's friend]
Support Role
Lee Seon Hee
Jung Gwi Ryun [Chan Sook's friend]
Support Role
Lee Sang Yi
Yang Seung Yeop [Seung Hee's brother]
Support Role
Kim Mo Ah
Yang Seung Hee [Marinated Crab Restaurant's owner]
Support Role
Baek Hyeon Ju
Oh Ji Hyun [Chan Sook's friend]
Support Role
Lee Joong Yul
Han Tae Hee
Support Role
Jin Yong Wook
Choi Jong Rok [Jae Young's husband]
Support Role
Lee Kyu Sung
Park Heung Shik [Hardware store owner]
Support Role
Carson Allen
Helena [Part-timer]
Support Role
Lee Jae Woo
Kwon Oh Joon [Police officer]
Support Role
Jeon Guk Hyang
Hong Eun Shil [Gyu Tae's mother]
Support Role
Kim Gun
Song Jun Gi [Chan Sook's son]
Support Role
Lee Jung Eun
Jo Jung Sook [Dong Baek's mother]
Support Role
Yoon Sung Woo
Su Bong [Pil Gu's friend]
Support Role
Seo Jang Hyun
Dae Sung [Pil Gu's friend]
Support Role
Shin Moon Sung
Park Seok Yong [Heung Shik's father]
Support Role
Park Yeon Woo
Park Sung Min [Police officer]
Support Role
Hwang Young Hee
Lee Hwa Ja [Jessica's mother]
Support Role
Kang Tae Ung
Park Hyeong Jun [Pitcher]
Support Role
Min Eung Shik
Mu Ok
Support Role
Han Ye Ju
Jo Ae Jeong [Butcher shop owner]
Support Role

Kim Won Joong
[Bank Robber] (Ep. 1)
Guest Role
Hwang Jung Min
[Shaman] (Ep. 1)
Guest Role
Shin Dong Ryuk
[Police evidence consult] (Ep. 7)
Guest Role
Kim Gi Cheon
Park Man Sup [Ongsan Governor] (Ep. 7, 11, 13)
Guest Role
Choo Kwi Jung
[Kang Jong Ryul's mother] (Ep. 9)
Guest Role
Kwon Hyuk Soo
[Governor] (Ep. 11)
Guest Role
Seo Yi Soo
Dong Baek [Young] (Ep. 11, 22, 24, 26-28, 38)
Guest Role
Jung Ga Ram
Kang Pil Goo [Adult] (Ep. 18, 20, 36, 40)
Guest Role
Heo Dong Won
Kim Nak Ho (Ep. 20, 22-23)
Guest Role
Kim Dan Woo
Hyang Mi [Young] (Ep.21-22, 24)
Guest Role
Jung Won Chang
[Reporter] (Ep.25)
Guest Role
Ahn Se Ho
[Reporter] (Ep.25-26, 39)
Guest Role
Choi Dae Chul
Hwang Gyu Shik [Yong Shik's big brother] (Ep.26)
Guest Role
In Gyo Jin
Hwang Du Shik [Yong Shik's big brother] (Ep.26)
Guest Role
Ok Joo Ri
[Fish store owner] (Ep. 26)
Guest Role
Choi Ga In
[Fish Store Owner] (Ep. 26)
Guest Role
Kim Dae Gon
[Shaman performing funeral] (Ep. 27)
Guest Role
Hong Seo Joon
Jeong Chan Geol [Doctor] (Ep. 27-28, 38)
Guest Role
Woo Jeong Won
Kwak Duk Soon [Young] (Ep.27-28)
Guest Role
Baek Eun Hye
Sung Hee [Jung Sook's legal daughter] (Ep.27, 29-30)
Guest Role
Im Sung Mi
Jo Jung Sook [Young] (Ep.28)
Guest Role
Kim Min Seok
In Goo [Food delivery man] (Ep. 29)
Guest Role
Jang Hye Jin
Park Yeong Shim (Ep. 29)
Guest Role
Lee Kyung Wook
[Detective] (Ep.32-34, 36-38, 40)
Guest Role
Hwang Jae Yeol
Kim Myeong Bae [Detective] (Ep.32-33, 35-38)
Guest Role
Jung Ji Hwan
Oh Byeong Heon [Detective] (Ep.32-33, 35, 37-38)
Guest Role
Son Jong Hak
Lee Sang Hoon [Police commissioner] (Ep. 33)
Guest Role
Shin Dam Soo
[Medical Examiner, Forensics] (Ep. 35)
Guest Role
Lee Shi Won
Mi Yeon [Adopted daughter instead of Dong Baek] (Ep.38)
Guest Role
Hong Suk Bin
[Part-time job broker] (Ep. 39)
Guest Role
Yang Jo Ah
[Nurse] (Ep. 40)
Guest Role
Lee Seung Hee
Han Geum Ok [Dong Baek's best friend / Joker's victim]
Guest Role
Yoo Joon Hoo
Kang Pil Goo [Young child]
Guest Role
Kim Min Joon
Hwang Yong Shik [Young]
Guest Role
Jang Hae Song
Hye Hoon [Hyang Mi's little brother]
Guest Role
Park Ok Chool
[Hyang Mi's landlord]
Guest Role
Lee Tae Goo
[Detective]
Guest Role
Park Ki Ryung
[Assemblyman with Gyu Tae] (Ep. 1)
Guest Role
Kwon Eun Seong
Hye Hun [Young]
Guest Role
Lee Cheon Mu
[Dancing boy]
Guest Role
Kim Jong Ho
[With Assemblyman at Camellia] (Ep.1)
Guest Role
Choi Gyo Shik
[Realtor] (Ep. 6, 8, 11)
Guest Role
Hong Boo Hyang
[Realtor] (Ep. 6,8,11)
Guest Role
Lee Jin Hee
Han Geum Ok [Reporter questioning Dong Baek as a witness]
Guest Role
Yu Yeon Seok
[Doctor]
Guest Role
Kim Yeon Seo
[Elementary school girl]
Guest Role
Choi Yoon Woo
[Dancing boy]
Guest Role
Shim Jae Hyun
[Umpire] (Ep.11)
Guest Role
Kang Dong Yup
[Governor Park's aide]
Guest Role
Park Sung Il
Park Yong Gil [Opposing team Coach] (Ep.11)
Guest Role
Jun Eun Mi
[Co-op member]
Guest Role
Gu Bon Jin
[Car Wash owner]
Guest Role
Kim Kyung Il
[Police officer running lie detector exam] (Ep. 17)
Guest Role
Kim Soo Ha
[Dancing girl]
Guest Role
Ahn Soo Bin
[Park Man Sup's aide]
Guest Role
Kim Do Won
[Claw machine kid]
Guest Role
Park Ye Chan
[Kid]
Guest Role
Jin Tae Yeon
[Madame]
Guest Role
Kyung Ki Hyun
[Hanbit Academy part-timer]
Guest Role
Park Tae Yun
[Baseball player boy]
Guest Role
Park Seon Hu
[Pil Gu's friend]
Guest Role
Jung Joon
[Student]
Guest Role
Song Nu Ri
[Basketball player]
Guest Role
Han Sang Chul
[Drunk man]
Guest Role
Garrison Michael Farquharson-Keener
Don [Baseball Team Owner]
Guest Role
Eun Ye Jun
[Pil Gu's teammate] (Ep. 36)
Guest Role
Kim Sung Yeol
[Moped thief] (Ep. 1)
Guest Role
Kim Te I
Park Heung Shik [Young]
Guest Role
Son Hwa Ryung
[Nurse] (Ep. 19)
Guest Role
Jang Ye Rim
[Restaurant clerk]
Guest Role
Lee Sang Hoon
[Hanbit Academy director]
Guest Role
Jeon Seok Chan
[Detective]
Guest Role
Kim Oh Bok
[ Kang Jong Ryeol's teammate]
Guest Role
Im Young Deok
[Kang Jong Ryeol's teammate]
Guest Role
Kang Jee Seok
[Yong Sik's age group kid]
Guest Role
Yoo Young Bin
[Ongnong FC 2]
Guest Role
Kang Ro Chae
[Businesswoman]
Guest Role
Lee Se Rang
[Restaurant owner / Jo Jeong Suk's flashback scene]
Guest Role
Kim Bum Suk Guest Role
Kang Ae Sim Guest Role