I Saw the Devil/YMMV

• Complete Monster: Kyung-Chul.
• High Octane Nightmare Fuel: Scenes involving Kyung-Chul have a very good chance of containing this.
  • The interlude with the cannibals fulfills this in spades.
• Moral Event Horizon: Crossed by Kyung-Chul well before the movie starts. Soo-Hyun arguably crosses this when he makes sure that Kyung-Chul dies horribly in front of his family, including his young son, who were completely innocent, estranged from Kyung-Chul and unaware of of his actions.