물괴

김명민

Yun-gyeom

김인권

Seong-han / Mulgoe (voice)

이혜리

Myeong-i

Choi Woo-shik

Royal Court Officer Heo

이경영

Sim-un

박희순

King Jung-jong

박성웅

Jin-yong

이도경

Grandpa Song

이규복

Mo-gae

김중희

Mak-gae

김강일

First Vice-Premier

조원희

Second Vice-Premier

장용복

Court Minister

Yun Hui-su

Kang-nyeo

한소영

Myeong-i's Mom

Joo Ye-rim

Young Myung

Kang Tae-young

In Duk

홍지윤

Mother

김준범

Government Official

윤병희

Eunuch