I <3 Harley. She is sassy, smart, and pretty much the biggest BA super villain woman. I mean, who doesn’t want to be her this year?! Her costume is fun, easy to replicate and will definitely turn some heads.

New 'Lego Batman 2' Trailer and Stills Show Off The Flash, Aquaman, Cyborg and More [Video]". Comics Alliance. May 23, 2012. Archived from the original on May 26, 2012 . Retrieved January 10, 2015.

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McGuire, Liam (August 10, 2021). "Harley Quinn Is Officially Part Of The Bat-Family, DC Confirms". ScreenRant . Retrieved August 20, 2021. a b c d e Knight, Rosie (May 22, 2019). "Brilliant Women of Batman: Harley Quinn Comes Into her Own". DC Comics . Retrieved March 4, 2021. a b c d e f g h i j k l Riesman, Abraham (February 5, 2020). "The Strange, Hidden Story of Harley Quinn". Vulture . Retrieved March 3, 2021. Tara Strong (November 14, 2013). Infinite Crisis – Behind the Voice – Tara Strong as Harley Quinn (interview). YouTube . Retrieved March 5, 2014. Why, hellllo Harley! What better way to welcome Harley Quinn to the pantheon of Infinite Crisis champions than by going behind the voice of Tara Strong. Find out what this fabulous, fan-favorite voice actor thinks of returning once again to the character she helped make famous.

Joker/Harley: Criminal Sanity #1–8 and Joker/Harley: Criminal Sanity Secret Files (the 2022 edition adds a story from Harley Quinn 30th Anniversary Special #1)Renaud, Jeffrey (June 8, 2017). "How Paul Dini & Jimmy Palmiotti Are Changing Harley Quinn, One Untold Story At A Time". Comic Book Resources . Retrieved August 8, 2021. a b Uzumeri, David (October 16, 2011). "DC Publishers Talk New 52 Costume Redesigns, Chip Kidd Batman, Earth One [NYCC]". Comics Alliance . Retrieved August 22, 2021. An empty, dark grey cell indicates the character was not in the film, or that the character's official presence has not yet been confirmed.