BTAS #2 "Harley & Ivy" Talkback (spoilers) Today at 5:30 p.m. eastern Cartoon Network airs the Batman: The Animated Series episode, Harley and Ivy as the second episode in it’s April Fool’s Day marathon. Episode #056 - Harley and Ivy Original Airdate - January 18th, 1993. After being booted out of the Joker's service, Harley Quinn forms a partnership with Poison Ivy. The Joker has a fit when he hears of their "Thelma and Louise"-style crime spree, and sets out to get Harley (and more important, the loot she stole) back. Comments?