Lim Cheol-soo

Sales Manager

Cha Jeong-il

Kim Jeong-su (Kim PD)

Jang Dong-geon / "Brown Finger"

Detective

Lee Choong-gu

Yoo Hong -jae

Kang Young-woo

Park Jong-seon

Go Yang-Hui

Private investigator

Mr. Oh

Chief Im

Actor

Na Kang-nam

Master Lee Cheol

Bang-ga

Self

An Gi-seok

Student

Park Soo-chan

Kim Sang-soo

Gips

Hae Won-maek's Subordinate

Park Jae-Ho

Jeon Seung-jae

Firefighter

Marine Products Young Man

Informant