Name	Known for
Yoon Eun-hye Chae-kyung Shin (as Yun Eun-hye) Chae-kyung Shin (as Yun Eun-hye) See fewer	The 1st Shop of Coffee Prince (2007)
Ju Ji-hoon Crown Prince Lee Shin Crown Prince Lee Shin See fewer	The Spy Gone North (2018)
Song Ji-hyo Min Hyo-rin Min Hyo-rin See fewer	New World (2013)
Park Chan-hwan Emperor Hyun (Shin's father) Emperor Hyun (Shin's father) See fewer	The King and the Queen (1998)
Bool-am Choi Emperor Sungjo (Shin and Yul's grandfather) Emperor Sungjo (Shin and Yul's grandfather) See fewer	The Last Witness (1980)
Kim Hye-ja Queen Mother (Yul and Shin's grandmother) Queen Mother (Yul and Shin's grandmother) See fewer	Mother (2009)
Shim Hye-jin Lady Hwa-yong (Yul's mother) Lady Hwa-yong (Yul's mother) See fewer	The Gingko Bed (1996)
Kim Jeong-hoon Prince Yul Prince Yul See fewer	Pacific Rim: Uprising (2018)
Kang Nam-kil Chae-kyung's father (as Nam-Gil Kang) Chae-kyung's father (as Nam-Gil Kang) See fewer	Jejoongwon (2010)
Kim Sang-jung Crown Prince Hyo Yeol (Yul's father) (as Sang Jung Kim) Crown Prince Hyo Yeol (Yul's father) (as Sang Jung Kim) See fewer	The Rebel Hong Gil Dong (2017)
Sung-Mo Um Ryu Hwan Ryu Hwan See fewer	Tae Guk Gi: The Brotherhood of War (2004)
Im Ye-jin Chae-kyung's mother Chae-kyung's mother See fewer	Secret Love (2010)
Yun Yoo-sun Queen Min (Shin's mother) (as Yoon Yoo-sun) Queen Min (Shin's mother) (as Yoon Yoo-sun) See fewer	The Story of Two Women (1994)
Lee Yoon-ji Princess Hye-myung (Shin's sister) Princess Hye-myung (Shin's sister) See fewer	Dream High (2011)