There is no comic book relationship as well-known or misinterpreted as the bond shared between the Joker and Harley Quinn. Despite the fandom that has rallied around their coupling, the history of the Joker and Harley Quinn is a strange, twisted, and startlingly violent tale. Even in a medium that is notoriously sexist, Joker and Harley give the term "toxic relationship" a whole new definition.
Looking back on all the times the Joker abused Harley Quinn, one might mistake the demented clown's actions as typically morbid; after all, when isn't the Joker acting like an unhinged killer? However, the character often takes his villainy to new heights when he's with Harley, resulting in scenes that are ugly in a manner that feels far too real for comics.
As the popularity of both characters continues to rise, it's important to look back at some of their relationship's darkest moments. While the duo certainly makes for a fun set of Halloween costumes, this isn't the type of romance you want to emulate.