Ahn Se-ho

as CEO An (1 episode)

as Dong-jin

as Seok-ho (3 episodes)

as Kim Deok-hyeon (10 episodes)

as Baek Suk-choon (2 episodes)

as Lee Kang

as Lee Chang-hyun (1 episode)

as Gang Boss (1 episode)

as Yu Hyeong

as Jang Min-gi

as Kim Soo-bok

as Ryo Tomokawa

as Eunuch

as Team Leader Park (10 episodes)

as Secretary Jang Ri-cheol

as Lee Jung-min

as Reporter (3 episodes)

as Investigator Maeng (14 episodes)

as Convenience store clerk

as Sugiyama's Subordinate

as Teacher Hong

as Driller

as PC Cafe

as friend 2 at reunion

as Choi Seok-ho