Guest Stars Yoo Dong Geun as Kwon Yong Gwan Jung Ho Bin as Kang Chul Hwan Oh Yoon Ah as Oh Sook Kyung Sean Richard as Andy Do Ye Sung as Jung Kyung Won Lee Han Wie as Park Sung Chul Kim Young Ae as Choi Jin Hee Lee Ji Hyun as NTS Staff Lee Jung Gil as Jo Myung Ho Kim Seung Woo as Park Chul Young Oh Chang Suk as Lee Dong Hun Yoo Ha Jin as NTS Staff Cha Do Jin as Oh Dae Shik Ahn Jin Kyung as Athena Operative Son Ji Hoon as Hong Jin Suk Arnold Hong as Suk Joon Jung Man Shik as Jae Hyuk Kim Yoon Tae as Jerome Lee Han Sol as Young Min Max Changmin as Choi Tae Hyun Yoshihiro Akiyama as Special Agent B5