Heo Ji-won

as Choon-seop

as Yoon

as Kwak Kyung-joon (12 episodes)

as White River

as Park Hyeok (40 episodes)

as Documentation Department Employee

as Wook-Tae (32 episodes), as Jin Wook-Tae (32 episodes)

as Dae Joon (1 episode)

as Kim Min-ho

as Min-chan (16 episodes)

as Kwak Min-soo (2 episodes)

as Kwon Du Hyeon

as Kwon Du Hyeon (12 episodes)

as Myeong-woo

as Jeong-chan

as Pierre Lee

as Ji-won