Suicide Squad: 30 Easter Eggs & References You Must See
9. The Assault On Arkham Parallels
There are a surprising number of references in the film to the excellent animated feature Batman: Assault On Arkham that was released in 2014.
Amanda Waller brings the team together in defiance of Batman to take down another villain (The Riddler rather than Enchantress), and the team contains Deadshot, Harley Quinn, Captain Boomerang, and King Shark (who was replaced late in the planning stages of the movie by Killer Croc). The place of Diablo was taken by Killer Frost.
The story also includes Batman and the Joker, and romance blossoms between Harley Quinn and Deadshot. It can't be accidental.