• 
  Se-in Kwon

  Jin-Ki
• 
  Ma Dong-seok

  Mark
• 
  Ye-ri Kim

  Soo-JIn
• 
  Derek Chouinard

  Club goer
• 
  Kwon Yul

  Jin-Ki
• 
  In-Beom Heo

  First Birthday Party Dad
• 
  Seung-Hoon Choi

  Joon-Yeong (Juvenile)
• 
  Sung-min Ahn

  Foreign Car Driver

• 
  Myung-soo Han

  Yoo Chang-soo's Employee 2
• 
  Ye-Rin Ok

  Joon-Hee (Juvenile)
• 
  Gwang-San Geum

  Combo Team 2
• 
  Cham-Sarang Choi

  Dongdaemun real elder sister
• 
  Do-Dam Han

  Gym Female Newbie 1
• 
  Hye-Jin Choi

  Jason Kim's Gang 4
• 
  Sin-Joo Bong

  Prison Punch Opponent

• 
  Ha-Yoon Ahn

  Gym Eldest Daughter
• 
  Leo Leotin

  Alex
• 
  Tim Rixx

  Joseph (Alex's Friend)
• 
  Arthur Freeman

  Tom