Yeo Jin-goo

as Eun Gye-hoon

as Self - Planet master

as Han Joo-won

as Jang Young-sil (voice)

as Goo Chan-sung

as Young Goo

as Clown Ha-seon / King Yi-heon

as Self

as Sung Hae-Sung

as Kim Woo-Jin

as King Yeongjo

as Jung Jae-min

as Han Jung-woo (young)

as Lee Hwon (young)

as Baek Dong-soo (young)

as Ho-dong (young)

as Kim Goni (young)

as Lee Gyeom (young)