Dream of the Emperor

Buyeo Pung

Queen Seungman Kim Hyun-soo as young Seungman

Lady Man-myeong (Yu-shin's mother) Kim Hyung-mi as young Man-myeong

Princess Seung-man, later Queen Jindeok of Silla

Princess Bo-ryang

Yeon-hwa Kang Ye-seo as young Yeon-hwa

Kim Al-cheon

Kim Chun-chu, later King Taejong Muyeol of Silla Chae Sang-woo as young Chun-chu

Gye-baek's wife

Buyeo Tae

Young Cha-bi

Kim Yong-chun (Chun-chu's father)

Kim Seo-hyeon (Yu-shin's father) Kim Dong-yoon as young Seo-hyeon

Young Yu-shin

(ep. 8 – 18) and Hong Eun-hee (episode 19 – 70) as Princess Deok-man, later Queen Seondeok of Silla Seon Joo-ah as young Deok-man

General Gye-baek

Queen Dowager Sado

Kim Go-ta-so Jung Da-bin as young Kim Go-ta-so

Young Kim Go-ta-so

Hwa-si

Ho-rang

Young Chun-chu

Lady Jiso (Yu-shin's third wife and Chun-chu's daughter)

Bi-dam

Kim Yu-shin Noh Young-hak as young Yu-shin

Young Yeon-hwa