Collective Invention

Park Goo mutates into a man-fish due to side effects from an experimental drug. He receives heavy publicity and becomes a star. A conspiracy by a pharmaceutical company leads Park Goo to being possibly expelled from the world.

• 
  Kwon O-kwang

• 
  Lee Kwang-soo
  Park-ku
• 
  Park Bo-young
  Ju-jin
• 
  Lee Chun-hee
  Sang-won
• 
  Jang Kwang
  Mutant's Father
• 
  Lee Byung-joon
  Doctor Byeon
• 
  Kim Hie-won
  Lawyer Kim
• 
  Jung In-gi
  Dong-shik
• 
  Dong Bang-woo
  Chairman
• 
  Choi Ji-ho
  Chairman's Secretary
• 
  Kang Bong-sung
  Moon-gi
• 
  Im Seong-mi
  Secretary
• 
  Kim Jin-goo
  Grandmother
• 
  Jeon Woon-jong
  Reporter
• 
  Jang Jun-whee
  Reporter
• 
  Cha Bo-sung
  Crown Prince
• 
  Son Cheol-min
  Reporter
• 
  Oh Chang-kyung
  Pastor
• 
  Chyu Kwang-hyun
  LGBT