as Song Young-sik

as Choi Yong-nam

as Detective Chief

as [Institution director]

as Yoon Hak-young

as Jeong Kyung-han

as Park Jong Su

as Kwak Moon Heum

as Gui-nam

as Ma Seok-koo

as Detective Squad Chief Choi

as Oh Sang-hoon

as Police University Professor

as Ma Do-Nam

as Jang Cheol-Min

as Jang Sung-Soo

as Hwang Yong-Woo

as CEO Min Sang-ho

as Min Yi-Bok

as Byeon Sa Tto

as CEO Han Gwang-Chul

as Big sister Wang

as Kwi Kyung Kong

as Nam Jong-Gyu

as Lee Tae-yong

as Tak Young-Jin

as Nurhaci

as Jo Hyeong-Chul

as Choi Il-Joong

as Nam Sang-Koo

as Director of Planning

as Pil-Mok

as Kim Ui-su

as Heo Yeongmin