Guest Stars Yoo Dong Geun as Kwon Yong Gwan Jung Ho Bin as Kang Chul Hwan Oh Yoon Ah as Oh Sook Kyung Do Ye Sung as Jung Kyung Won Sean Richard as Andy Lee Ji Hyun as NTS Staff Cha Do Jin as Oh Dae Shik Ahn Jin Kyung as Athena Operative Park Yong Soo as Hwang Ho Young Arnold Hong as Suk Joon Lee Han Sol as Young Min Max Changmin as Choi Tae Hyun Kim So Yun as Kim Sun Hwa