- Go Youn-jung - Jang Hui-soo
- ??? - Lee Gang-hoon
- ??? - Hwang Ji-hee
- ??? - Kim Deok-yoon
- Jun Suk-ho - Yoon Sung-wook
- Yoon Sa-bong - Janitress
- Park Han-sol - Han Byul
- ??? - Jung Sang-jin (Jincheon)
- ??? - Hwang Ji-sung
- ??? - Shin Yoon-young
- Yoo In-hye - Jin-cheon Company's Female Employee
- Koo Ji-hye - Class 3-3 Student
- Bae Hyeon-jun - Class 3-3 Student
- Choi Deok-moon - Jeon Yeong-seok (Bongpyeong)
- ??? - Butcher Shop Owner
- Son Bo-seung - Butcher Shop Owner's Son
- Min Ji-a - Bong-seok's Elementary School Teacher
- Han Chang-min - Kim Bong-seok (9 Years Old)
- Kang Sook - School Uniform Store Owner
- Kim Kuk-hee - Hong Sung-hwa (Naju)
- Yoon Jin-young - Tattoed Man
- Han Sang-kyung - Tattoed Man's Friend
- Shim Dal-gi - Shin Hye-won
- Lee Ho-jung - Yang Se-eun
- Seo Yi-ra - Seo Yu-ra
- Kang Chae-young - Janggyeong High Female Juvie
- Song Duk-ho - Seo Yu-ra's Boyfriend
- Lee Suk-hyeong - Janggyeong High Class President
- Kwak Min-jun - Janggyeong High Student Officer
- Gil Do-yeong - Hui-soo's Classmate at Janggyeong High
- Jun Hee-ryeon - Former Marine Corps Car Owner
- Jo Hong-woo - Funeral House Staff
- Park Kyung-hye - NIS Employee
- Son Byung-ho - Chief of Security Department
- Shin Jae-hwi - Bang Ki-soo
- ??? - Yeo Woon-kyu
- Kim Joon - Jeon Gye-do (10 Years Old)
- Lee Dong-yong - Bus Driver
- Daniel C. Kennedy - Mark
- Kim Tae-yul - Frank (12 Years Old)
- Foster Burden - Iowa instructor
- ??? - Ma Sang-goo
- Kwon Han-sol - Min’s Secretary
- Park Ok-chul - Director of North Korea Information Office
- Won Choon-gyu - Director of Anti-communist Investigation Bureau
- Moon Jung-dae - Gwang-jin
- Seo Suk-kyu - NIS Shooting instructor
- Lee Dong-chan - Lee Mi-hyun's father
- Im Sung-jae - Bae Min-ki
- Yoon Dae-yeul - Nolgae
- ??? - Plus Motel Innkeeper
- ??? - Self (archive footage)
- Kim Jong-il - Self (archive footage)
- Andreas Fronk - Russian agent
- Ham Tae-in - North korea team leader
- Park Jeong-min - Dr. Kang
- Kim Yoon-sung - Bat-ta
- Kyul Hwi - Plus Motel 403
- ??? - Umji Coffee Shop's Miss Park
- Kim Deok-ju - Old woman
- Ryu Kyeong-hwan - Drunk driver
- ??? - NIS staff
- Jo Bok-rae - Park Chan-il
- Jung Young-sub - Company commander
- Han Sa-myeong - Vice company commander
- Shin Hee-cheol - Doctor
- Seong Hyeok - Jang Ju-won’s colleague
- Lee Hae-yeong - Chief of police
- Seo Moon-ho - Street vendor Park
- ??? - Street vendor Choi
- Shin Mi-yeong - Sung-woo's mother
- Kim Si-woo - Lee Gang-hoon (4 Years Old)
- ??? - Jeong Jun-hwa
- ??? - Bae Jae-hak
- Park Kwang-jae - Kwon Yong-deuk
- Kim Joong-hee - Lim Jae-seok
- Oh Hee-jun - Police
- Lee Si-hoo - Bungaeman PD
- Lee Soon-poong - Bungaeman Judge Committee
- Choi Yoon-bin - Bungaeman Assistant Director
- Kim Jung-young - Jeon Gye-do's Mother's Voice
- Cho Jae-wan - Airliner Captain
- Jo Jin-kyul - Airliner Copilot
- Lee Hae-sun - Airliner Kid's Mother
- Sung Yeol-seok - Longjing Hotel Korean-Chinese
- Han-sol Lee - Longjing Hotel Korean-Chinese
- Ryoo Je-seung - Longjing Hotel Bellman
- Kim Geun-Hwan - Longjing Hotel Agent
- Park Jong-beom - Waiter Minky
- Han Sang-jo - Ulsan & Pohang Gangster
- Ha Jae Yeol - Ulsan & Pohang Gangster
- Kwak Gi-hun - Ulsan & Pohang Gangster
- Kang Kyung-woo - Ulsan & Pohang Gangster
- Kim Woo-hyun - Thug who is hit by alcohol glass
- Jae Hu - Incheon Thug
- Shin Su-a - Praying Family's Daughter
- Park Yoon-seo
- Park In-je
- ??
- Shim Se-yoon
- Ham Jin
- Yu Jae-hyeok
- ???
- Jang Kyung-ik
- Gang Hye-yeong
- Lee Gyeong-cheol
- ???
- Eun Hee-soo
- ???
Seung-yong Ryoo interpreta a Jang Ju-won en la serie.
Han Hyo-joo hace el papel de Lee Mi-hyun.
Zo In-sung interpreta a Kim Doo-sik en la serie.
??? hace el papel de Jeon Gye-do.
??? hace el papel de Frank.
??? hace el papel de Lee Jae-man.
Kim Hee-won interpreta a Choi Il-hwan en la serie.
Moon Sung-keun hace el papel de Min Yong-jun.
??? hace el papel de Kim Bong-seok.
Go Youn-jung interpreta a Jang Hui-soo en la serie.
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