One thing about Harley is that she can comfortably fit in a story for kids or adults, even if she sometimes sports lingerie
Well, classic Harley anyway. I know this makes me an old fuddy-duddy but I really don’t care for her more recent incarnations, especially the “Suicide Girls Model” look she donned for the live action movie.
I was just at the SF Comic Con last weekend and there had to be several dozen Harley Quinns in torn fishnets and booty shorts. I assume there had been a run on the local Hot Topic.