BEGIN SLIDESHOW Joker & Harley Quinn writers discuss the deranged tone It’s been two years since Jared Leto and Margot Robbie graced the screen together as The Joker and Harley Quinn in Suicide Squad, and now the announced spin-off focusing on the two has finally found a finished script from Crazy. Stupid. Love‘s Glenn Ficara and John Requa. RELATED: Exclusive: Margot Robbie Talks Joker and Harley Quinn Film The two writers recently sat down and spoke with Metro about how they crafted the script and the tone they found, while also discussing the fun they had with writing it.