Nam Kyung-eup

as Im Seo-heung (12 episodes)

as Cho Tae-su (12 episodes)

as Choi Yong-hwan (1 episode)

as Gwon Yul

as Jang Chang-sung (105 episodes)

as Chairman Ryu Jae Jin (6 episodes)

as Choi Soo Young (16 episodes)

as Lee Jae Sik (16 episodes)

as Jong Gwon (120 episodes)

as Hong Myung-Soo (1 episode)

as Deok-sik

as Yoon Jeung-pyeong (12 episodes)

as Han Tae-seok (129 episodes)

as Chairman Wang (3 episodes)

as Yoon Hyun-Mok (32 episodes)

as Kang Jung-Do (32 episodes)

as Dal-ju

as Kim Jwa-geun

as Vice Minister Park

as President (4 episodes)

as Jeon

as Richard Ma