Hong Seo-jun

as Seung-bong

as Chief Eunuch Kim (8 episodes)

as Doctor

as Kim Yul-seong (7 episodes)

as Cho Sang-taek

as Park Young Suk [Park Young Joon's brother] (12 episodes)

as Jong-ryeo's Father

as Associate Director

as Kim Yeong-won (12 episodes)

as Ma Kang (12 episodes)

as President Kim

as Han Dae-hoon (3 episodes)

as Ha Chang-soo

as Choi Hyung-joon (1 episode)

as Jang Tae-soo

as Oh Dae-hyun (12 episodes)

as Kim Jung-hoon

as Gu Bon Cheol [Lawyer] (2 episodes)

as Lee Hyeong-gi (16 episodes)

as Magistrat (1 episode)

as Gil Jong-moon (20 episodes)

as Chief Kang (16 episodes)

as Mr. Kim (16 episodes)