The Batman Adventures #12 (DC, 1993) CGC NM- 9.2 White pages. This first appearance of Harley Quinn in comics (albeit outside of DC continuity). One of the most desirable comics of the 1990s, it regularly sells for well above Guide values, and the upcoming Birds of Prey movie will likely draw even more attention to it. Mike Parobeck cover and art. Currently #5 on Overstreet's Top 20 Modern Age Comics list.