Nam Da-reum

as Ko Se-Hun

as Young Sun Woo-hae

as Crown Prince of Joseon

as King Hyeonjong

as Ri Eul / Ryu Min-Hyuk [Teen]

as Han Do-kyung

as self

as Seung-tae

as Na Woo-soo

as Cheong-seok

as Park Young / Young Prince

as Han Ji-pyeong (young)

as Teenage Moon Ha-won

as Spirit of the Well

as Park Sun-ho

as Young Yoon Na-Moo

as Young Jeong Jae-chan

as Young Wang Won

as Self

as Park Jung-woo

as Yi Bang-won (young)

as young Yi Deok-hyeong

as Heo Il-rak

as Young Gi Ha-myeong

as Young Jo-yoon

as Kang Dong-seok (young)

as Han Tae-kyung (young)

as Young Jung Woo-sang

as Eun Se Gyeol

as Hyeon-seok (young)

as Young Lee Sung-ha

as Kang Min-sung

as Jin Ho

as Choi Seung-Yoon

as Ko Chan-Young [Young]

as Gyo-ki (young)

as Lee Minjo

as Crown Prince of Joseon

as Prince Eunpyeong

as Young Choi Kang-ta

as Choi Han-Gyul

as young Kim Yoon-oh

as Young Yoon Ji-hoo