황산벌

정진영

Kim Yu-sin

박중훈

Gye-baek

이문식

Thingamajig

Lee Won-jong

Yeon Gaesomun

Kim Byeong-cheol

Shilla spy

김선아

Gyebaek's wife (cameo)

류승수

Kim In Moon

김승우

Mole 1

Woo Hyun

Owner

Kim Sang-won

Silla Soldier 5 / Cuckoo 1