Top Billed Cast

1. 

   Gong Yoo

   Ki-heon

2. 

   Park Bo-gum

   Seo Bok

3. 

   Jo Woo-jin

   Chief Ahn

4. 

   Jang Young-nam

   Dr. Im Se-eun

5. 

   Park Byung-eun

   Shin Hak-sun

6. 

   Yeon Je-wook

   Section Chief Heo

7. 

   Kim Hong-pa

   Bureau Director Bae Guk-jang

8. 

   Lee Eon-jeong

   Yoon Hyun-Soo

9. 

   Na Kwang-hoon

   Kim Walker

10. 

    Kim Jae-geon

    Chairman Kim Chun-oh

11. 

    Andreas Fronk

    John Kane

12. 

    Paul Battle

    Carl Anderson

13. 

    Andrea Paciotto

    Roberts

14. 

    Yoon Sang-hoon

    Dr. Song

15. 

    Han Ji-hyun

    Yong Ju

16. 

    Maurice Turner Jr.

    Foreign Mercenary

17. 

    Baek Do-kyeom

    Agent

18. 

    Yun Ki-chang

    Agent

19. 

    Lee Yo-sung

    Chasing Police Officer

20. 

    Jo Yeon-ho

    Young Min Gi-heon

21. 

    Jo Jin-kyul

    NIS Agent

22. 

    Ahn So-ye

    Crosswalk Kid

23. 

    Kim Kyu-do

    Seoin Researcher

24. 

    Ki Hwan

    Intelligence Bureau Team Leader

25. 

    Joey Albright

    Mercenary

26. 

    Jung Mi-nam

    Mercenary

27. 

    Shin Sung-il

    Mercenary

28. 

    Cha Ji-won

    Researcher

29. 

    Park Sang-hoon

    Intelligence Bureau Agent

30. 

    Lee Sang-kyung

    Intelligence Bureau Agent

31. 

    Jung Young-sub

    Intelligence Bureau Agent

32. 

    Yun Hui-Cheol

    Health Drink Store Owner

33. 

    Yang Hee-woo

    Gas Station Employee

34. 

    Kim Sang-dong

    Market Vendor

35. 

    Lim Jae-min

    Extraction Room Researcher

36. 

    Kim Kye-hyung

    SWAT Member

37. 

    Kim Yong-jun

    Man in Rear Car Dispute

38. 

    Jin Si-won

    Seoin Security Agent

39. 

    Chae Yeon-jung

    Ki-heon's Mother