as Yoon Tae-sik(12 eps)
as Dokgo Young-hoon(3 eps)
as Mun Jeong-hun(12 eps)
as Shim Seung-bo(12 eps)
as Kim Chang-yi(123 eps)
as Jun-cheol
as Han Ki-hwan(16 eps)
as Son Min Ho(16 eps)
as Lee Mok-yo
as Director of NIS
as Park Yeong-choon
as Park Jeong-gi, Chief Presidential Secretary
as Lee Se-hun(24 eps)
as Ahn Min-Shik(16 eps)
as Do Yun-wan(16 eps)
as Kim Jeon-moo
as Jang Hyung-sik
as Mr. Min Byeong-uk(16 eps)
as Baek Jong-Sik(20 eps)
as Park Seung-gu
as Yi-soo
as Choi Dong-wook(20 eps)
as Lee Sang-jin
as Combined Forces Command Controller
as Eye
as Prosecutor
as Planning Director
as Dr. Park
as Kim Si-hoo
as Han Jun-seok
as Firearms Shop Owner (uncredited)
as Planning Director
as Chang-jun
as PD Kim
as Doctor Na Young-soo