Cato is the main antagonist of Don't Make Deals with Demons. He's a very sadistic demon king who takes great pleasure in causing pain to others. He's a very calm and collected demon and only let's his psychotic side show through on occasion, mainly when he's excited for what he's about to do. He's very condescending towards humans and demons beneath him and is more for toying with his prey rather than killing it on site.  It's rare to see him without that smile on his face. Angering him, takes a great effort. Those who do... best be weary.