The provided episode explores the complex and abusive relationship between the DC Comics characters Joker and Harley Quinn. It examines their dynamic from various perspectives, including their shared history, Harley's motivations, and the Joker's manipulative behavior. The sources also discuss Harley's relationships with other characters, such as Poison Ivy, and how these interactions contrast with her tumultuous bond with the Joker. Additionally, the text details the creation of Harley Quinn and the creators' intentions behind her character. Finally, it analyzes how their relationship has been portrayed across different media, including animation and live-action films.