Trigger

Park Yoon-ho

Park Gyu-jin

Age 22 (now 23)

Kim Nam-gil

Lee Do

Age 45 (now 46)

Kim Young-kwang

Moon Baek

Age 38 (now 39)

Moon Seong-hyun

Teenage Moon Baek

Age 19 (now 20)

Park Hoon

Koo Jeong-man

Age 44 (now 45)

Kil Hae-yeon

Oh Gyeong-suk

Age 61 (now 62)

Kim Won-hae

Cho Hyeon-sik

Age 56 (now 57)

Woo Ji-hyun

Yoo Jeong-tae

Age 39 (now 40)

Jung Woong-in

Yoon Won-cheol

Age 55 (now 56)

Cho Han-cheul

Captain Joo

Age 52 (now 53)

Ahn Se-ho

Kim Deok-hyeon

Age 44 (now 45)

Cha Rae-hyung

Seo Hyeong-ju

Age 41

Jang Dong-ju

Jang Jeong-woo

Age 30 (now 31)

Son Bo-seung

Seo Young-dong

Age 26 (now 27)

Hong Min-gi

Kang Seong-jun

Age 23 (now 24)

Kim Joong-hee

Reporter Wang

Age 40 (now 41)

Park Kwang-jae

Yong-gu

Age 44 (now 45)

Kang Chae-young

Park So-hyeon [Nurse]

Age 29 (now 30)

Kong Hyun-ji

Cho Se-yeong [Hyeon-sik's Daughter]

Age 32 (now 33)

Lee Suk

Jeo Won-sung [Sex Offender]

Age 43 (now 44)

Shin Mun-sung

Hwang Suk-min [Inspector]

Age 51 (now 52)

Lee Ji-hoon

Computer Repair Shop Owner

Age 46 (now 47)

Sun Woo-sun

[Psychiatrist]

Age 50 (now 51)

Kim Dae-gon

Cho Woo-tae [Jeong-man's Subordinate]

Age 41 (now 42)

Jeon Su-ji

[Situation Room Chief]

Age 41 (now 42)

Choi Jeong-in

[Gyu-jin's Mother]

Age 46 (now 47)

Gu Hyun

Lee Do (child)

Do Eun-bi

Ko Ji-yeong [Water Purifier Coordinator]

Age 31 (now 32)

Song You-hyun

[Teacher]

Age 42 (now 43)

Han Sa-myeong

[Internal affairs investigator]

Age 39 (now 40)

Kim Yoon-jin

Anti-gun Supporter (eps 10)

Age 31 (now 32)

Han Se-hee

Gun Supporter

Age 27 (now 28)