Starting off kind of mildly, here is a picture of Widower, the main villain of Loins of Society, my original book series.  They are a serial killer in the main setting of the series, who has framed Allen, an important secondary character, for the deaths of various humanoids.  No one, especially Ramon who hates the Widower the most, knows what their beef is with Allen.  Better yet, no one knows who the Widower is.  For most of the series, its identity remains unknown, as it wears a spider themed costume to conceal themselves.  I do know who the Widower is, but you'll have to wait and see who they are once my series really gets going.