Warrior Baek Dong-soo () is a 2011 South Korean fusion historical/action television series starring Ji Chang-wook in the title role, with Yoo Seung-ho, Yoon So-yi, Shin Hyun-bin, Choi Min-soo and Jun Kwang-ryul. It aired on SBS from July 4 to October 10, 2011, on Mondays and Tuesdays at 21:55 for 29 episodes. Based on the 2010 comic Honorable Baek Dong-soo by Lee Jae-heon, the series is about how Joseon historical figure Baek Dong-soo grew to become a swordsman and folk hero. Baek was one of the three authors of Muyedobotongji, a pivotal martial arts work commissioned by King Jeongjo. Synopsis Set against the backdrop of political maneuverings in Joseon between different factions, namely those led by King Jeongjo, by the Qing ambassador, by the Japanese swordsman Kenzo, and the assassin's guild Heuksa Chorong, the series is a coming-of-age drama about brotherhood, friendship, loyalty and honor. Cast Main Ji Chang-wook as Baek Dong-soo Yeo Jin-goo as young Dong-soo A carefree swordsman who alters the fate of the nation as a member of the royal guard. Yoo Seung-ho as Yeo Woon Park Gun-tae as young Woon Son of Yeo Cho-sang. Dong-soo's friend and seeming nemesis. He lives in the shadows as the mole for a mysterious assassin collective aiming to overthrow the dynasty. Yoon So-yi as Hwang Jin-joo Lee Hye-in as young Jin-joo Dong-soo's childhood friend. Daughter of Ji/Ga-Ok and Kim Gwang-taek Shin Hyun-bin as Yoo Ji-sun Nam Ji-hyun as young Ji-sun Consort of Prince Sado, and later love interest of Dong-soo and Woon. Choi Min-soo as Chun Leader of assassin's guild Heuksa Chorong, and Yeo Woon's mentor. Jun Kwang-ryul as Kim Gwang-taek Joseon's top swordsman, and Dong-soo's mentor. Supporting Hong Jong-hyun as King Jeongjo Park Jun-gyu as Heuk Sa-mo, Baek Dong-soo's guardian Park Won-sang as Jang Dae-pyo, leader of the training camp Lee Jin-ah as Jang-mi, Heuk Sa-mo's love interest. Yoon Ji-min as Ji / Ga-Ok, love interest of Chun and Kim Gwang-taek; mother of Jin-joo. Park Chul-min as In / Dae Ung, one of the three leaders of Heuksha Chorong Oh Man-seok as Crown Prince Sado Jeon Guk-hwan as King Yeongjo Geum Dan-bi as Queen Jeongsun Lee Won-jong as Hong Dae-ju, Joseon's Minister of State and the series' principal villain Jung Ho-bin as Im Soo-woong, right-hand man to Prince Sado Ahn Suk-hwan as Seo Yoo-dae, a Joseon general and loyal ally of Prince Sado Kim Dong-kyun as Boo Gwan, Hong