Full cast of Good Boy
Park Chul-min
Kim Geum-nam
16 episodes
Eung-soo Kim
Cho Pan-yeol
16 episodes

Lee Ji-hyeon
Jung Gyeong-mi
16 episodes

Go Joon
Leo
16 episodes

Kim Ji Yoo
Ji Han-na [young]
16 episodes

Lee Ho-jung
Kim Yeon-ha / Drug Monster
12 episodes

Han Kyu-won
An Dae-yong
3 episodes

Lee Ji-hye
Jung Kyung-mi
2 episodes

Lee Dal
Silver Bunny
2 episodes

Na Ho-sook
Lee Jin-su's Mom
2 episodes

Ahn Se-ho
Baek Suk-choon
2 episodes

Kang Gil-woo
Lee Sang-gon
2 episodes

Lee Han-sol
Lee Jin-su
2 episodes
손기철
Reporter
1 episode

Lee Keon-gu
Gangster
1 episode

Choi Woo-jin
Doctor
1 episode

Lee Su-mi
Insung Supermarket Owner
1 episode

Kim Eun-kyung
Neighbor
1 episode

Yoon Sang-won
Yang Chun-bae
1 episode

Kim Seo-kyung
Kim Seok-hyeon
1 episode

Lee Ki-seop
Mr. Jang
1 episode

Kim Chan-hyung
Correctional Officer Han
1 episode
Kim Jong-hyun
Real Estate Agent
1 episode

Seo Jae-hee
Jin Gyeong-suk
1 episode

Kim Young-sung
Ji Ho-cheol
1 episode

Kim Ji-Yu
Young Ji Han-na
1 episode

Jung Jae-won
Lee Gwang-se
1 episode

Choi Woo-jung
Nurse (eps 5)
1 episode















