Police University

Yoo Dong-man

Kang Seon-ho

Oh Kang-hee

Park Min-kyu

Choi Hee-soo

Kwon Hyuk-pil

Baek Hee

Jo Joon-wook

Seo Yeo-joon

Seo Sang-hak

Park Cheol-jin

Team Leader Choi

Han Jung-sik

Go Deok-bae

Yoon Seung-beom

Oh Jung-ja

Lee Eon-ju

Min Jae-kyung

Yun Taek Il [Seung Beom and Sun Ho's dad]

Landlord

Foreign Currency Exchange Agent