bad guy

informal

1. 1 :  the villain in a story :  baddie played the bad guy in the movie

2. 2 :  someone who is likened to the villain in a story: such asa :  a criminal Designed to keep guns out of the hands of bad guys and children … — Popular Scienceb :  a military enemy … a decision that owes more to parochial conflicts within the Armed Forces than to doing the best job of surveilling bad guys. — Stuart F. Brownc :  someone who deserves to be blamed or criticized for causing a bad situation Meanwhile, it's the environmentalists who are now portrayed as the bad guys, hiring lots of lawyers, consorting with congressmen … — Eric Altermand :  a person who treats other people harshly or strictly :  a person who says or does unpopular things Parenting isn't just about having beautiful kids and being busy. It's about dealing with problems, and your success as a parent depends on your willingness to be the bad guy. If you aren't willing to be the bad guy, you shouldn't be a parent. — Roy Bragg