Harley Quinn declared herself independent from the Joker back in the first season, and rightly so!A fascinating, even seductive character with self-determination unseen in other former sidekicks All of Margot Robbie’s Harley Quinn movies are connected in some way through recurring characters, a clear timeline of events, etc. The confusion came due to ‘The Suicide Squad’ originally being marketed as a full-on reboot of the 2016 ‘Suicide Squad’ that flopped like a fish on dry land. xrR1ElJ.