Chief Producer
Cinematography
Composer
Director
Producer
Screenwriter
Main Role
- Song Joong Ki Main Role
- Song Hye Kyo Main Role
- Jin Goo Main Role
- Kim Ji Won Main Role
Support Role
- Lee Seung Joon Support Role
- Seo Jung Yeon Support Role
- Park Hwan Hee Support Role
- Onew Support Role
- Jo Woo Ri Support Role
- Hyun Jyu Ni Support Role
- Tae In Ho Support Role
- Park Ah In Support Role
- Kwak Min Seok Support Role
- Kang Shin Il Support Role
- Kim Byung Chul Support Role
- Park Hoon Support Role
- Ahn Bo Hyun Support Role
- Choi Woong Support Role
- Kim Min Seok Support Role
- Jasper Cho Support Role
- Jeon Soo Jin Support Role
- David McInnis Support Role
- Jo Jae Yoon Support Role
- Lee Yi Kyung Support Role
- Jung Young HoonJung Yeong Hoon [Taebaek unit]Support Role
- Park Pal Young Support Role
- Go Man Kyu[Lieutenant Park's team]Support Role
- Jung Sung Hoon[Doctor]Support Role
Guest Role
- Ahn Doo Ho Guest Role
- Ji Seung Hyun Guest Role
- Ariane Desgagnes-Leclerc Guest Role
- Lee Kwang Soo[Toy gun range shooting shop worker] (Ep. 1)Guest Role
- Jeon Jin Ki[VIP patient] (Ep. 2)Guest Role
- Jung Dong Gyu[VIP patient] (Ep. 2)Guest Role
- Matthew Douma Guest Role
- Dawson Dean[Chief of Police] (Ep. 3)Guest Role
- Ryu Hwa Young[Dae Yeong's ex-girlfriend] (Ep. 4)Guest Role
- Lee Jong Hyuk[Shi Jin's partner] (Ep. 5)Guest Role
- Nam Moon ChulManager Go [Construction plant vice-manager] (Ep. 5-8)Guest Role
- Lee Hyun Kul[Dae Yong's former soldier] (Ep. 6)Guest Role
- Anupam Tripathi[Man that gives the shoe to Dr. Kang] (Ep. 6-7)Guest Role
- Park Joon Geum[Chi Hoon's mother] (Ep. 7, 11)Guest Role
- Sung Ki Yoon[South Korean President] (Ep. 12)Guest Role
- Yoo Ah In Guest Role
- Nam Ki Ae[Mo Yeon's mom] (Ep. 13)Guest Role
- Lee Jae Yong Guest Role
- Yeri[Herself / Red Velvet] (Ep. 16)Guest Role
- Joy[Herself / Red Velvet] (Ep. 16)Guest Role
- Wendy[Herself / Red Velvet] (Ep. 16)Guest Role
- Seulgi[Herself / Red Velvet] (Ep. 16)Guest Role
- Irene[Herself / Red Velvet] (Ep. 16)Guest Role
- Kim Hyo Myung[Thug]Guest Role
- Shin Dong Hoon[Agent]Guest Role
- Joey Albright[Soldier]Guest Role
- Oh Jin Ha[Subway part-timer]Guest Role
- Kang Moon Kyung[Deputy Commander]Guest Role
- Jun In TaekYoo Young GeunGuest Role
- Seo Woo Jin[Doctor]Guest Role
- Kim Kyul[Suk Won's secretary]Guest Role
Unknown
- Tae Won Seok Unknown
- Park Geon Rak Unknown
- Kim Shi Hwan Unknown
- Kim Ha Neul Unknown
- Han Sang Gil Unknown
- Kim Min Chae Unknown
- Lee Chan Jong Unknown
- Han Yeo Wool Unknown
- Min Woo Gi Unknown
- Lee Chang Unknown
- Lee Eun Chae Unknown
- Lee Se Wook Unknown
- Shin Se Young Unknown
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