Characters played by Min Namkoong
Han Ji Hyuk
Characters played by Ha-seon Park
Seo Soo Yeon
Characters played by Ji-Eun Kim
Yoo Je Yi
Characters played by Kim Do-Hyun
Ha Dong Gyun [NIS crime info integration center team 1]
Characters played by Hwang Hee
Oh Kyung Seok [NIS Black Sheep team agent]
Characters played by Bong-sik Hyun
Chun Myung Ki [NIS server management agent]
Characters played by Jung Ji-yoon
Kim Yeo Jin [NIS psychologist]
Characters played by Park Jin-Woo
Cha Min Cheol [NIS field support team member]
Characters played by Bok-rae Jo
Kim Dong Wook [NIS Black Sheep team agent]
Characters played by Moon-Sung Jung
Jang Chun Woo
Characters played by Ahn Jung-Ho
[Agent]
Characters played by Byeong-ki Kim
Bang Young Chan [NIS director]
Characters played by Jong-Tae Kim
Kang Pil Ho [NIS overseas division director]
Characters played by Min-Sang Kim
Jeong Yong Tae [NIS director]
Characters played by So-Hyeon Kwon
Goo Hyo Eun [NIS field support team member]
Characters played by Lee Kyung-young
Lee In Hwan [NIS domestic division deputy director]
Characters played by Jae-Kyoon Lee
Lee Choon Gil
Characters played by Shin Moon-Sung
Jang Kwang Cheol
Characters played by Sung No-Jin
Hwang Mo Sul
Characters played by Ja-Yeon Ok
Lin Wei [China Ministry of State Security agent]
Characters played by Hyuk-kwon Park
Lee Myung Cheol
Characters played by Park Won-Sang
Nam Seon Woo
Characters played by Jang Young-Nam
Do Jin Suk [NIS overseas division deputy director]
Characters played by Oh-seong Yu
Baek Mo Sa
Characters played by Oh-jin Kwon
[Boat surgeon]
Characters played by Im Dong Min
[Coast guard]
Characters played by Lee Moo Nyoung
[Taxi driver]
Characters played by Hong Suk-Bin
[Psychiatrist]
Characters played by Im Chae Sun
[Boat crew member]
Characters played by Woon Bok Yeo
[Doctor]
Characters played by Seo Yeon-Woo
[Daughter stowaway]
Characters played by Park Young-bok
[Father stowaway]