Weak Hero Class 2

Casting Director

• 
  Han Jun Hee

Director

• 
  Park Dhan Hee

Screenwriter & Director

• 
  Yoo Su Min

Main Role

• 
  Park Ji Hoon

  Yeon Si Eun / Gray Yeon

  Main Role
• 
  Ryeo Un

  Park Hu Min / Ben Park

  Main Role
• 
  Choi Min Yeong

  Seo Jun Tae / Eugene Gale

  Main Role
• 
  Lee Min Jae

  Ko Hyeon Tak / Alex Go

  Main Role
• 
  Bae Na Ra

  Na Baek Jin / Donald Na

  Main Role
• 
  Lee Jun Young

  Geum Seong Je / Wolf Keum

  Main Role

Support Role

• 
  Yoo Soo Bin

  Choi Hyo Man / Colton Choi

  Support Role
• 
  Oh Gi Gwang

  Do Seong Mok

  Support Role
• 
  Lee Myeong Ro

  Baek Dong Ha

  Support Role
• 
  Yoon Hyun Sik

  Yoo Yae Chan

  Support Role
• 
  Lee Tae Hee

  Lee Dae Hui

  Support Role
• 
  Son Bo Seung

  Seoknam Gorilla

  Support Role
• 
  Kim Dong Woo

  Kim Geon U

  Support Role
• 
  Cha Se Jin

  Cha Sang Min

  Support Role
• 
  Kim Seong Jeong

  Choi Yu Jun

  Support Role
• 
  Lee Won Joo

  Park Do Yun

  Support Role
• 
  Im Ho Joon

  [Homeroom teacher]

  Support Role
• 
  Choi Min Kyu

  [Seoknam student]

  Support Role
• 
  Park Beom Chan

  [Jeongbi student]

  Support Role
• 
  Jo Chang Geun

  [Hyeongshin student]

  Support Role

Guest Role

• 
  Jeon Soo Ji

  [Psychiatrist] (Ep. 1)

  Guest Role
• 
  Jang Jun Hee

  [2-7 homeroom teacher] (Ep. 3)

  Guest Role
• 
  Kang Hak Soo

  [Police officer] (Ep. 4)

  Guest Role
• 
  Kim Gun

  [Baek Jin's classmate] (Ep. 5)

  Guest Role
• 
  Bae Hyun Kyung

  [Detective] (Ep. 7)

  Guest Role
• 
  Shin Mi Young

  [Orphanage director] (Ep. 8)

  Guest Role
• 
  Seo Yun Hyuk

  Na Baek Jin [Child]

  Guest Role
• 
  Jung Hyun Joon

  Park Hu Min [Child]

  Guest Role
• 
  Cha Yoon Oh

  Kim Han

  Guest Role
• 
  Choi Hyun Wook

  An Su Ho / Stephen An

  Guest Role
• 
  Hong Kyung

  O Beom Seok / Bryce O

  Guest Role
• 
  Kim Sung Kyun

  Yeon Gyu Jin [Si Eun's father]

  Guest Role
• 
  Han Tae Ha

  Seo Min Jun [Student]

  Guest Role
• 
  Kim Da Han

  [Hyo Man's subordinate]

  Guest Role
• 
  Baek Gyeong Seon

  [2-4 student]

  Guest Role
• 
  Park Woo Young

  [2-4 student]

  Guest Role
• 
  Lee Jin Sung

  [Delivery man]

  Guest Role
• 
  Lee Jae Yong

  [Delinquent student]

  Guest Role
• 
  Shin Woo Chan

  [Bowling alley member]

  Guest Role
• 
  Kang Hee Gu

  [Hyeongshin student]

  Guest Role
• 
  Baek Jeong Hun

  [Bully high school student]

  Guest Role
• 
  Bae Jun Hyung

  [Yeoil High student] (Ep. 3)

  Guest Role
• 
  Ahn Sang Jin

  [Innocent student]

  Guest Role
• 
  Hwang Geun Hyung

  [Bully group member]

  Guest Role
• 
  Cheon Ju An Guest Role

Cameo

• 
  Jo Jung Suk

  Choi Chang Hui [Bowling alley owner] (Ep. 5, 7-8)

  Cameo
• 
  Jeon Bae Soo

  Park Jin Cheol [Hu Min's father]

  Cameo
• 
  Gong Hyun Joo

  [Si Eun's mother]

  Cameo

Extras Casting

• 
  Kim Hyeong Won

  Kim Ji Won [Hyeon Tak’s basketball teammate]

  Extras Casting
• 
  Lee Jae Bin

  [Si Eun's classmate]

  Extras Casting

Unknown

• 
  Yoo Da Hye Unknown
• 
  Son Sang Jun Unknown

Bit part

• 
  Eun Seung Jun

  [Seoknam student]

  Bit part