• 
  Pil-Sung Yim

  regizor
• 
  Jee-woon Kim

  regizor

• 
  Jee-woon Kim

  scenarist

• 
  Doona Bae

  Min-seo
• 
  Ji-hee Jin

  Min-seo
• 
  Bong Joon Ho

  Joon-ho, lee
• 
  Ma Dong-seok
• 
  Park Hae-il

  In-Myung

• 
  John D. Kim

  Former NASA Researcher
• 
  Jun-hee Ko

  Kim Yoo-min
• 
  Kang-woo Kim

  Robot repairman Park Do-won
• 
  Sae-Byeok Song

  Min-Seo's uncle
• 
  Seung-beom Ryu

  Suk-woo

• 
  Jung-hwa Kim

  producător