Why does the Joker need Harley Quinn?

The Joker needs Harley so he can be even more insane and that he loves her back before she was Harley Quinn. Her name was Harleen Quinnzel trying to cure the Joker, but instead of curing him she fell in love with him. After she became Harley Quinn, she and the Joker were named the king and queen of Gotham City. read more

The Joker doesn’t need Harley Quinn. He’s been doing fine without her for the character’s first fifty years. That being said, she does bring out a dynamic in showing how the Joker interacts with a woman. read more

The Joker is the most dangerous, most intimidating, ruthless, most sinister villains out there, but he is mostly accompanied by her sort of girlfriend and partner: Harley Quinn. read more

(Episode: Joker's Millions. Animated Series: The New Batman Adventures (TNBA). The legal owner: WBTV.). read more