I'm Just a Villain

Have you ever seen an evil villain? What does a villain look like in your eyes? Is he handsome and attractive? Bad at heart? Or something? The villain in my eyes is one who always develops only for his own benefit. Everything he does can not be recognized by anyone, but they can't do it. They say that the protagonist is a person with great luck, and the villain cannot be killed no matter what, but if you meet this person, what should you protagonists do? "System? Haha, there is no such thing as a system, there is no such thing as an old man joining in. I will still kill you, Mr. Chen."