An informative fan site with currents news, previews and comic appearances.

An on going web toon written by Paul Dini and centered on the adventures of Harley Quinn, Poison Ivy, Catwoman and Batgirl.

Character biographies, essays, fan fiction, fan art, images, sounds, Arkham Asylum files.

Comprehensive fan site with profiles, merchandise, appearances.

Fan site with quotes, facts, comic book summaries, FAQ.

Fan site with information on Harley Quinn, The Joker, Poison Ivy and Batman. Includes profiles, casting calls and photos.

The second unofficial fan club dedicated to Harley Quinn. Forums with discussions on comics, animation, websites, fiction and art.