Characters played by Lee Jong-Suk
Park Hoon
Characters played by Se-Yeon Jin
Han Seung-Hee
Song Jae-Hee
Characters played by Ho-jin Chun
Prime Minister Jang Seok-joo
Characters played by Park Hae-joon
Cha Jin-Soo
Characters played by In-gi Jeong
Kim Tae-Sool
Characters played by Park Hae-Jin
Han Jae-Joon
Characters played by Kang So-ra
Oh Soo-Hyun
Characters played by Jung-woo Choi
Moon Hyung-wook
Characters played by Su-Jeong Eom
Min Soo-Ji
Characters played by Jeon Gook-hwan
Oh Joon-gyu
Characters played by Eun-seon Han
Eun Min-Se
Characters played by Yong-geon Kim
President Hang Chan-Sung
Characters played by Jae-won Lee
Kim Chi-Gyu
Characters played by Kim Sang-Ho
Yang Jeong-han
Characters played by Bo-ra Yoon
Lee Chang-yi
Characters played by Sang-Jung Kim
Park Cheol (Park Hoon's father)
Characters played by David Will No
Dr. Yan
Characters played by Goo Seung-Hyeon
Park Hoon (young)