A "What-If" idea, this reference being a template for not only body type or hair type, but personality type, mental state (insanity), and some clothing types as well. I also like the whole clingy, loyal (perhaps a bit ditsy, stalker looking) girl capable of chaos and affection, maybe give her a more "magical essence" to her.

[I do not own Batman, DC Comics, or affiliated characters like Harley Quinn]