Kim Sang-joong (Jingbirok) will play father to the titular Hong Gil-dong (Yoon Kyun-sang). He was descended from slaves but through business savvy he was able to build up assets and become a power broker in the world of smuggled goods. His love for his son will force him to join the dark side in order to hide a secret — that his son has superhuman strength. Kim Ji-suk (Oh Hae-young Again) is cast as the tenth king of Joseon, Yeonsangun, a notorious tyrant. Honey Lee (Come Back, Ajusshi) plays his famous siren of a royal consort, Jang Nok-su, who rose from the ranks of gisaeng with her ambition and beauty. She alone understands the king’s loneliness and lunacy, and she captures the hearts of everyone around her. Chae Soo-bin (Moonlight Drawn By Clouds) plays Hong Gil-dong’s lover, a slender but plucky heroine who enters the palace and inextricably gets mixed up with the king and his consort. Rebel Hong Gil-dong will air on Mondays and Tuesdays in January on MBC.