Kim Jung-soo

as Na Yak Kwon [Doctor] (2 episodes)

as [Judge] (1 episode)

as Da-goo's friend (1 episode)

as Won-il

as Chang-hak's Father (1 episode)

as Principal Gang (1 episode)

as executive director Min

as Vice-President Kim of Seoul bank

as Police chief

as Mr Kim

as Board member

as Senior Soo Chang (18 episodes)