The villain in 'Only a Monster' is Michael, a ruthless Hunter who's dedicated his life to exterminating monsters. Unlike typical villains, Michael isn't just evil for the sake of it—he genuinely believes he's saving humanity. His methods are brutal though; he doesn't hesitate to kill anyone standing in his way, including innocent bystanders. What makes him terrifying is his sheer competence—he's always two steps ahead, exploiting every weakness. His obsession with wiping out monsters borders on fanaticism, and his tragic backstory only fuels his rage. He's not just a physical threat but a psychological one, constantly playing mind games with the protagonist.