갑동이

Jung İn-gi

Cha Do-hyeok

조민준

Lee Hyung-nyeon

윤상현

Ha Moo Yum

Kim Min-joung

Maria Oh

Sung Dong-il

Yang Cheol-gon

Lee Joon

Ryu Tae-oh

Kim Ji-won

Ma Ji-wool

Kang Nam-gil

Han Sang-hoon

민성욱

Nam Ki Ri

윤균상

Youngest detective

Choo Soo-hyun

Oh Young-ae

Yoon Chan-young

young Ryu Tae-oh

현우

young Cha Do-hyeok

Jeong Jae Min

Ha Moo Yum [Young]

Ha Jun

Nah Do-Hyung