Lee Seo-jin

as Gyebaek

36 episodes

Lee Hyun-woo

as Gyebaek (teen)

36 episodes

Cho Jae-hyun

as King Uija

36 episodes

Choi Won-hong

as King Uija (child)

36 episodes

Noh Young-hak

as King Uija (teen)

36 episodes

Oh Yeon-soo

as Sa Taek-bi

36 episodes

Song Ji-hyo

as Eun-ko

36 episodes

Jeon Min-seo

as Eun-ko (child)

36 episodes

Park Eun-bin

as Eun-ko (teen)

36 episodes

Zin Tae-hyun

as Gyo-ki

36 episodes

Nam Da-reum

as Gyo-ki (young)

36 episodes

Seo Young-joo

as Gyo-ki (teen)

36 episodes

Jeon No-min

as Sung-choong

36 episodes

Kim Dong-hee

as Eun-sang

36 episodes

Seo Beom-sik

as Sa-Gul

36 episodes

Cha In-pyo

as Moo-jin

36 episodes

An Kil-kang

as Kwi-woon

36 episodes

Hyomin

as Cho-young

36 episodes

Lee Han-wi

as Im-ja

36 episodes

Shin Eun-jung

as Queen Seonhwa

36 episodes

Han Bo-bae

as Cho-young (teen)

36 episodes

Park Yu-hwan

as Buk-jo

36 episodes

Jeong So-yeong

as Myung-Joo

36 episodes

Choi Jong-hwan

as King Moo

36 episodes

Oh Ji-young

as Jung-hwa

36 episodes