as King Sejong the Great
as King Taejong
as Prime Minister Hwang Hui
as Yun Hee
as Jang Yeong-sil
as Grand Prince Suyang
as Eori
as Prince Choong-nyeong
as young Princess Shim
as Prince Yangnyeong (young)
as Lee Seon
as Prince Yang-Nyung
as Queen Won-gyeong
as Choi Yoon-deok
Full cast details coming soon!