| Actor | Role |
|---|---|
 Yoon Doo-joonKing Yi Do | King Yi Do |
 Kim Seul-giJang Dan-bi | Jang Dan-bi |
 Jin Ki-jooQueen Sohyeon | Queen Sohyeon |
 Ahn Hyo-seopBak Yeon | Bak Yeon |
 Im Ye-jinDan-bi's Mother / Queen Wongyeong | Dan-bi's Mother / Queen Wongyeong |
 Kim Kap-sooDan-bi's Father / Hwang Hui | Dan-bi's Father / Hwang Hui |
 Jeong Gyu-suSim On | Sim On |
 Lee Dae-yeonCSAT Supervisor / Choe Man-li | CSAT Supervisor / Choe Man-li |
 Ko Kyu-pilMath Teacher / Chief Eunuch | Math Teacher / Chief Eunuch |
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