Folie à Deux is viewed as a failure, the movie did make some important changes to Harley Quinn that stand out.

Harley Quinn ... the Joker on Batman: The Animated Series. Thanks to a wonderful performance from actress Arleen Sorkin, who inspired the character in the first place, she became a fan favorite.

You can shop most of the costumes on Amazon. There’s nothing more classic than a Joker and Harley Quinn costume. With Halloween in the air, we’ve been hunting for the best family, baby, and overall ...

For a lot of fans, Ledger delivered the best-ever Joker ever seen on screen, although Phoenix is definitely giving him a run for his money. Same as with Joker, Harley Quinn has changed her style ...

Folie a Deux features a significant change to Lady Gaga’s Harley Quinn depiction, origin, and backstory. As such, fans are ...

AKA the Joker himself, and Lady Gaga's Harley "Lee" Quinn. As a Lady Gaga superfan of 15 years (a Little Monster, to use the correct terminology) and a massive Harley Quinn fan, it's safe to say ...

But it’s not just Harley Quinn ... In “Joker: Folie à Deux,” Harley is assumed to be a fellow psych ward patient alongside Arthur. She is also said to be a Joker super-fan who idolizes ...