10 Worst Things Harley Quinn Has Done To The Joker

For a good while in the world of comics, Harley leaving the Joker only to come back the next time he said he'd change was a tragic inevitability. As many times as Harley would realise J was no good for her, she'd also compulsively want to believe he was going to improve, no matter how many times he fed her the same tired lines about treating her better.

However, Harley has left the Joker for good before, most notably during her time in the Suicide Squad, where she goes back to beat the criminal up in jail and cement their separation.

And while this has been good for Quinn - both in her character development and in us getting to see her outside of being the Joker's long-suffering lackey - it's terrible for the Joker. Having spent so long being able to win his Harlequin back whenever he wanted to, her independence forces him to confront the fact that, actually, she was never "his" in quite the way he always thought.