Ji Sung
Ha Woo-shin / Song Soo-hyun (16 eps)
Seo Ji-hye
Eun Hye-soo (16 eps)
Lee Soo-kyung
Kim Seo-hee (16 eps)
Heo Sung-tae
Choi Tae-sung (16 eps)
Oh Dae-hwan
Team A Leader Lee (16 eps)
Lee Kyung-young
Chairman Kwon (16 eps)
Hwang Jeong-min
Butler Kwon (16 eps)
Choi Deok-moon
Kang Hyuk-pil (16 eps)
Seo Hyun-woo
Kwon Hyun-jo (16 eps)
Park Hae-eun
Yoon Sun (16 eps)
Cho Seong-ha
Lee Chang-woo (16 eps)
Lee Si-won
Secretary Yoon (16 eps)
Shin Hyeon-seung
Lee Dong-rim (16 eps)
Woo Hyun-ju
Ms Oh (16 eps)
Go Yoon
Agent Park (16 eps)
Choi Chan-ho
Agent Kim (16 eps)
Lee Ho-chul
Manager Jeong (16 eps)
Cho Dong-in
Manager Lee (16 eps)
Jang Jin-hee
Special Agent Miss Lee (16 eps)
Won Tae-min
Special Agent Mr. Han (16 eps)
Lee Do-yeop
Special Agent Mr. Baek (16 eps)
Hwang Jin-hwan
Haesongwon security guard (14 eps)
Han Sa-myeong
Team A agent Cha (12 eps)
Jung Young-hoon
Team A agent (11 eps)
Kim Jong-goo
Hwang Byung-chul (7 eps)
Yun Yoo-sun
Ha Young-shin [Woo-shin's mother] (6 eps)
Go Gyu-pil
Gong Dae-chul (5 eps)
Im Byeong-gi
Director Eun (4 eps)
Jin Tae-yeon
Jang Young-ja (4 eps)
Jo Hyun-wu
Song Soon-ho (4 eps)
Kim Do-yoon
Sergeant Ko Chul-min (4 eps)
Ahn Bo-hyun
Kwon Min-jo (3 eps)
Kim Jeong-ho
Kim Won-joong (3 eps)
Kang Hak-soo
Chief Yang (3 eps)
Heo Tae-hee
Prosecutor Han Min-soo (3 eps)
Ha-min
Lee Dong-rim's mother (2 eps)
Choi Mu-in
Im Deok-su [killer] (2 eps)
Jang Tae-min
Detective (2 eps)
Park Seong-chan
Director Jung Hyo-gun (2 eps)
Min Eung-sik
Prosecutor office deputy head (1 eps)
Jo Han-joon
[Undercover agent] (1 eps)
Jang Ui-don
Jang Eui-don (1 eps)
Jeon Kwang-jin
[Bomb squad captain] (1 eps)
Song Hyeong-su
Jeweler (1 eps)
Park Ji-ho
Hwang Byung-chul's aide (1 eps)
Yang Heung-ju
Warden Jeon Byung-gyu (1 eps)
Kim Bi-bi
ARES Team Leader Lee Mi-young (1 eps)
Park Ki-ryung
ARES CEO Kim Gun-ho (1 eps)
Choi Da-young
Ms. Cho (1 eps)