Han Gi-joong

as Chief of Police

as Chairman Han (16 episodes)

as Kim Doo-Yeol (1 episode)

as Kim Eun-soo (2 episodes)

as Kim Gap-joo (2 episodes)

as Sweet potato farmer (1 episode)

as Kim Sung-ho (12 episodes)

as Ryu Hyun-il (16 episodes)

as Kwon Man-su (2 episodes)

as Lee Jae Sun's foster father (1 episode)

as Park Won-Moo (40 episodes)

as Lieutenant General Son

as Head of Jongseon (1 episode)

as Director of National Intelligence Service

as Lee Heung-gi

as Yang Ik-tae (16 episodes)

as Section Chief

as Police Officer

as President Park

as Prosecutor Jung

as Suk-won's senior

as Min-soo

as Doctor