Full cast of Weak Hero

Park Ji-hoon

Yeon Si-eun

16 episodes

Choi Hyun-wook

Ahn Su-ho

16 episodes

Hong Kyung

Oh Beom-seok

16 episodes

Cha Woo-min

Kang Woo-young

16 episodes

Yoo Su-bin

Choi Hyo-man

9 episodes

Ryeoun

Park Hu-min

8 episodes

Lee Yeon

Yeong-i

8 episodes

Choi Min-yeong

Seo Jun-tae

8 episodes

Kim Su-gyeom

Jeon Yeong-bin

8 episodes

Shin Seung-ho

Jeon Seok-dae

8 episodes

Bae Na-ra

Na Baek-jin

8 episodes

Lee Min-jae

Go Hyun-tak

8 episodes

Lee Jun-young

Geum Seong-je

8 episodes

Yoon Jung-hoon

Lee Jeong-chan

8 episodes

Cha Se-jin

Basketball club member 3

8 episodes

Hwang Sung-bin

Han Tae-hoon

8 episodes

Na Chul

Kim Gil-su

8 episodes

이용빈

Seung-min

8 episodes

Lee Myeong-ro

Baek Dong-ha

6 episodes

Oh Gi-gwang

Do Seong-mok

6 episodes

Jeon Bae-soo

Baku's Father

6 episodes

Kong Hyun-joo

Si-eun's Mother

5 episodes

Cho Jung-seok

Choi Chang-hee

4 episodes

Lim Ho-jun

2-4 Homeroom Teacher

3 episodes

Son Bo-seung

Seoknam's Gorilla

3 episodes

Jang Dae-woong

Kim Won-seok

2 episodes

Jung Hyeon-jun

Child Park Hu-min

2 episodes

Lee Hyun-bae

Yeong-bin's Friend

1 episode

Yu Seong-yong

Baseball Player

1 episode

Oh Su Yun

Yeong-bin's Mother

1 episode

Kim Hyeok-jong

Police Officer 1

1 episode

Kim Tae-jun

Police Officer 3

1 episode

Pyeon Hae-jun

Kim Hui-jun

1 episode

Park Sang-eun

Jeong-chan's Friend

1 episode

Jang Jae-ha

Child Yeon Si-eun

1 episode

Byun Joong-hee

An Su-ho's Grandmother

1 episode

Kim Hyun

School Principal

1 episode

Lee Hae-woon

Homeroom Teacher

1 episode

Jeon Su-ji

Psychiatrist

1 episode

Jang Jun-whee

2-7 Homeroom Teacher

1 episode

Kang Hak-soo

Police Officer

1 episode

Kim Geon

Baek-jin's Classmate

1 episode

Bae Hyun-kyung

Detective

1 episode

Shin Mi-yeong

Orphanage Director

1 episode

Jo Ah-young

Yeong-bin's Friend

1 episode

Bae Jun-hyung

Student

1 episode