Kim Soo-hyun
King Lee Hwon

Yeo Jin-goo
Lee Hwon (young)

Han Ga-in
Heo Yeon-woo / shaman Wol

Kim Yoo-jung
Heo Yeon-woo (young)

Jung Il-woo
Prince Yang-myung

Lee Tae-ri
Yang-myung (young)

Kim Min-seo
Yoon Bo-kyung

Kim So-hyun
Yoon Bo-kyung (young)

Sunwoo Jae-duk
Heo Young-jae

Song Jae-hee
Heo Yeom

Yim Si-wan
Heo Yeom (young)

Yoon Seung-ah
Seol

Seo Ji-hee
Seol (young)

Ahn Nae-sang
King Sungjo

Kim Young-ae
Queen Dowager Jung-hui

Nam Bo-ra
Princess Min-hwa

Jin Ji-hee
Min-hwa (young)

Song Jae-rim
Kim Jae-woon

Lee Won-keun
Kim Jae-woon (young)

Kim Ye-ryeong
Lady Park

Jeon Mi-seon
Jang Nok-young

Yang Mi-kyung
Shin Jung-kyung / Madam Heo