Park Bo-young ( 박보영 )

Do Bong-soon

Park Hyung-sik ( 박형식 )

Ahn Min-hyeok

Kim Ji-soo ( 김지수 )

In Gook-doo

Jun Suk-ho ( 전석호 )

Secretary Gong

Shim Hye-jin ( 심혜진 )

Hwang Ji-ni

Yoo Jae-myung ( 유재명 )

Do Chil-goo

An Woo-yeon ( 안우연 )

Do Bong-gi

Kim Min-kyo ( 김민교 )

Agari

Yoon Ye-hee ( Yoon Ye-hee )

Jeong Mi-hwa

Kim Won-hae ( 김원해 )

Kim Gwang-bok / Oh Dol-pyo

Im Won-hee ( 임원희 )

Baek Soo-tak

Kim Ki-moo ( 김기무 )

Hwang Hyeon-dong

Seol In-a ( 설인아 )

Jo Hee-ji

Choi Won-myeong ( Choi Won-myeong )

Jang Gyeong-tae

Jang Mi-kwan ( Jang Mi-kwan )

Kim Jang-hyeon

Lee Do-hyun ( Lee Do-hyun )

Jang Gwang-seok

Park Bo-Mi ( Park Bo-Mi )

Na Gyeong-shim

Kim Young-Choon ( Kim Young-Choon )

Il-jin

Baek Soo-Ryun ( Baek Soo-Ryun )

Grandmother Soon Shim

Yoon Young Joo ( Yoon Young Joo )

Min-hyeok's Stepmother

Kim Seong-beom ( Kim Seong-beom )

Ahn Dong-ha

Kim Won-suk ( Kim Won-suk )

Detective Dotbogi

Shim Hoon-ki ( Shim Hoon-Ki )

Ahn Dong-seok

Lee Se-Wook ( Lee Se-Wook )

Ahn Gyeong-hwan

Choi Mu-in ( Choi Mu-in )

Team Leader Yook

Choi Hyung ( Choi Hyung )

Hee Raen-gi

Jun Byung-Chul ( Jun Byung-Chul )

Lee Woo-jin

Choi Seung-hoon ( Choi Seung-hoon )

Young Ahn Min-hyeok

Choi Hyun-Seo ( Choi Hyun-Seo )

Kim Jiwon

Ahn Chang-hwan ( 안창환 )

Jeong Joon-tae

Yoo In-soo ( 유인수 )

Kang Goo

Kim Soo-yeon ( Kim Soo-yeon )

Jae-soon's Mother

Kim Won-Suk ( Kim Won-Suk )

Magnifying Glass

Yang Joo-ho ( Yang Joo-ho )

Knock Boy

Oh Soon-tae ( 오순태 )

Brown Bear

Heo Jung-Guk ( Heo Jung-Guk )

Chairman Ahn Cheol-do

Seo Sung-Jong ( Seo Sung-Jong )