Jang Hyuk as Yoo Gun
– Park Gun Tae as Yoo Gun (Young)
Lee Da Hae as Ji Soo Yeon
– Kim So Hyun as Soo Yeon (Young)
Oh Yun Soo as Choi Min
Yoon Doo Joon as Seo Hyun Woo
Lee Joon as Yoon Shi Hyuk
Kim Il Woo as Kang Chul Hwan
Baek Seung Hyun as Kang Byung Jin
Sung Dong Il as Park Joon Han
Yoon Joo Sang as Oh Hyun Kyu
Jun Jae Hyung as Pyo Jin Hwan
Cha Hyun Jung as Yoo Hae Young (NSS Dispatch Team Leader)
Lee Seung Hak as Kim Ji Hun
Kim Hyung Gon as Song Young Min
Lee Jae Hoon as NSS agent

North Korea Party

Lee Bum Soo as Yoo Joong Won
Kim Seung Woo as Park Chul Young
Ahn Seung Hoon as Kwon Young Choon
Kim Jong Goo as Koo Bon Gil
Yoon So Yi as Park Tae Hee
Park Jung Won as North Korean agent (Park Chul Young’s servant)

IRIS

Kim Gab Soo as Mr. Black
Kim Young Chul as Baek San (NSS vice-director)
– Jung Suk Won as Baek San (Young)
Im Soo Hyang as Kim Yun Hwa
David Mclnnics as Ray (IRIS Operations Team Leader)
Yoon Joo Hee as Lee Soo Jin (NSS Secretary)
Kim Ji Min as Jamie
Go Yoon as Yoo Jin