I knew a kid when I was growing up that was evil. He would talk people into doing things that were not okay, and then he would immediately turn on them and get an authority figure to get them into trouble, all while laughing and then retelling the story to anybody who would listen. He repeated this pattern throughout the entire time I knew him (many years), only escalating the entire time.
I'm guessing he's probably caused a death or two in his life by now, either directly or indirectly.
Just using firefox and old.lemmy