Han Suk-kyu

Jang Jae-wook

President Seo

Shin Jae-yi

Jang Tae-su

Kang Chang-wook

King Sejong

Do Chi-Gwang

Myung-hui

Jung Ik-ho

Teacher Kim / Bu Yong-ju

Jo Dol-suk

King Yeongjo

Sang-jin

Jung Jin-soo

Self

King Se-jong

Chang-in

Han Dong-soo

Capt. Baek Sung-chan

Shim In-ku

Moon-jae

Yun-seo

Jo Jin-man

KCIA Chief Agent Joo

Lee Ki-hoon

Lim Byeong-ho

Detective Cho

Yu Jong-won

Jung-won

Dong-hyun