Lee Ki-bong (1 episode)

Sang-ung

Park Sang-yong (7 episodes)

Park Sang-yong

Oh Jong-gu (16 episodes)

Tae Dong-su / Captain (11 episodes)

Chang-mo

Ra-han

Jeon Seok-woo

Sang-ung

Jo Jae-hoon

Kim Joong-min (10 episodes)

Gong Soo-hyeok

Chinese Restaurant Owner

Jang Kyung-chul (12 episodes)

Kang Yeong-sik

Self (2 episodes)

(2 episodes)

Yang Bo-sung

Jang Du-jin (18 episodes)

Yang Hwa (16 episodes)

Park Dae-woong (4 episodes)

Secretary Gong Soo-cheol

Do Yeong-geol (16 episodes)

Kim Sang-Goo (16 episodes)

Min Seung-ho

Pilot

Village bus couple / Choon Bae

Du-man

Himself (1 episode)

Min Jae-shik (16 episodes)

Dong-jin

Mr. Byeon

Hak-soo

Joo Kook-Sung (32 episodes)

Ma Sang-goo

Detective Jeon (32 episodes)

Il-sik

Lee Dong-Hyun (16 episodes)

Sin Yong-soo

Seong-ho

Do Chang-hak

Jang Man-Sik (18 episodes)

Jung Soo-hyuk (16 episodes)

Goo-gyeong

Chief Prosecutor

Jeon Seok-woo

(1 episode)

Seoun-hyeon

Mr. Shim

(4 episodes)

Prosecutor

Butler Yang

Detective Choi

Kang Hyun-bin (44 episodes)

Doo-chul

Shin Bong-shik

Oh Jin Wan (18 episodes)

NIS Section Chief

President Park

Steve Jeong

Rhee Kang-seok (20 episodes)

Ji-hyung

detective

Kim Do-kyun (15 episodes)

Manager Han

Genji

Nam Seon-soo

Manager Jang (16 episodes)

Ba-woo’s father

Detective 1

Inspector Kong

Oh Jeong-moon

Husband (ep.2)

Loses Property for Development 4

Man-sik

Detective

Attacker

Engineer Jo

Detective Choi