Jo Min-ki

as Wang Geon / King Taejo

as Kang Byeong-chul

as Section Chief

as Jeong Byung-kwon

as Dr. Han Ji-woo

as Moon Il-seok

as Self

as Park Tae-hwa

as Won-joong / Kyung-dong

as Section chief Jo

as Shin Tae-hwan

as Kyung-ho

as Kim Moon-soo

as Jeong Cheol-min

as Soo-yeong

as Jung Yeong-Jun

as Seo Jin-ki

as 정영준

as Hong Hae-sung

as Han Jung-hwan

as 吕时宇

as 박태준

as Jung Ji-suk

as Yun Sang-woo

as 이묵현

as King Youngjo

as Kim Nam-jin