Choi Il-hwa

as Tak Jung-Hwan (16 episodes)

as Lawmaker Sung

as President Moon

as Seo Bong-soo (20 episodes)

as Heo Seong-goo

as Moon Sang-Gook (122 episodes)

as Director Kim Seong-cheol (16 episodes)

as Chairman Park

as Jung Man-jae (123 episodes)

as Song Eung-chang (50 episodes)

as Na Shichan (20 episodes)

as Boss

as Kim Shin-il (16 episodes)

as Choi Il-do (16 episodes)

as Seol Doo-sung (24 episodes)

as King Jungjong (20 episodes)

as Jang Su-ki

as Boss

as Lee Sang Gook (124 episodes)

as Chul-min (old)

as Kim Seohyeon (70 episodes)

as Chul-soo

as President

as Min-soo's Father