As Season 4 of Harley Quinn ends, it's a bittersweet one. Harley has lost her killer's edge, confirming to herself and her peers that she can indeed be a superhero. It goes a long way because everyone doubted her. Thankfully, Poison Ivy and Barbara Gordon are backing her, adamant Harley's meant to shine away from toxic elements such as The Joker and the Legion of Doom.
Source：https://www.cbr.com/harley-quinn-season5-setup/
