Jang Geun Suk as Baek Dae Gil
Yeo Jin Goo as Prince Yeoning (later King Yoengjo)
Jun Kwang Ryul as Lee In Jwa
Choi Min Soo as King Sookjong
Im Ji Yun as Dam Seo
Yoon Jin Seo as Suk bin Choe
Yoon Ji Hye as Hong Mae
Lee Moon Shik as Baek Man Geum

People around Dae Gil

Im Hyun Sik as South Goblin (Nam Do Ggae Bi)
Ahn Kil Kang as Kim Che Gun

People around Lee In Jwa

Song Jong Ho as Kim Yi Soo
Ji Il Joo as Moo Myung (No Name)
Han Jung Soo as Hwang Jin Ki

Toojunbang

Jun Soo Jin as Hwang Goo Uh Mum
Kim Yoo Chul as Dae Ga Ri
Jun Jae Hyung as Ga Mool Chi

Jojung

Hyun Woo as King Gyungjong
Han Ki Woong as Sa Woon
Han Ki Won as Sa Mo
Oh Yeon Ah as Jang Ok Jung
Baek Seung Hyun as Jang Hee Jae (Jang Ok Jung’s brother)
Heo Tae Hee as Sang Gil (Yeongjo’s bodyguard)
Lee Ga Hyun as Hwa Jin
Hong Ah Reum as Yeon Hwa
Cha Soon Bae as Jo Tae Goo