Couples / Duos / Halloween / Unique 0 Harley Quinn and Joker Crossover Negan Costume Posted by DenisePosted 6 years ago August 4, 2017 We love DC comics and The Walking Dead. This is Harley Quinn and Joker crossover Negan cosplay.Submitted by: DeniseHarley Quinn Joker Negan Facebook1 Pinterest26 Twitter Reddit