Note: KBC airs 2 episodes of HGD each Saturday, one right after the other.
Hong Gil-dong: Kang Ji Hwan Heo Yi-nok: Sung Yuri Lee Chang-hwi: Jang Geun Suk (King's brother) Shim Soo-geun: Park Sang Wook Jung Mil-nyeo: Cha Hyun Jung Mr. Yeon: Moon Se Yoon Gom-yi: Maeng Se Chang Seo Eun-hye: Kim Ri Na (Minister Seo's daughter) Seo Yoon-sup: Ahn Suk Hwan (Eun-hye's dad) Hal-meom: Byun Shin Ho (Eun-hye's servant) Hong In-hyung: Kim Jae Seung (Minister Hong's son, Gil-dong's brother) Hong Pan-eo: Gil Yong Woo (Gil-dong's dad) Monk/Gil-dong's teacher: Jung Eun Pyo Heo No-in: Jung Kyu Soo (Yi-nok's grandfather) Noh Sang-Goong: Choi Ran (Lady Noh) Chi-soo: In Sung (Chang-hwi's bodyguard/right hand man) Yong-ho: (works for Lady Noh) Lee Kwang-hwi: Jo Hee Bong (King, Chang-hwi's brother) Choi Seung-ji: Maeng Ho Rim (minister) Eunuch Go: Kim Jong Suk Eunuch Jang: Park Yong Jin Mr. Wang: Choi Seung Kyung (shop owner) Mr. Pyo (works for Gil-dong's dad) Mae-hyang (Kisaeng) So-ran (Kisaeng) Po-jang (soldier) Jong Shi-kwan (soldier)
A guest (nene) in the visitor's board has provided this link to watch if you miss this show with subtitles. Here is the link I was not able to catch the first of 2 episodes last Sat. so I have started to watch it online to catch up.