Fan Casting Lee Jae-kang in Scales: Mermaids are Real - The King 2 Hearts (2012)

Jae-ha's and Jae-shin's oldest brother and former King of South Korea, a caring and responsible man to both the Royal Family and the rest of the country. After witnessing the collapse of the Berlin Wall on TV during childhood, he was inspired and later organized a plan to join the North and South Korean militaries in a world-scale competition between military officers. He also sent Jae-ha into the team to be trained with the hope of transforming him into one who can be sufficiently responsible as a member of the Royal Family. He was assassinated along with his wife Queen Hyun-joo during their vacation and he only appeared in a flashback.