Fan Casting Suicide Squad: Kill the Justice League

2 years after the events of Arkham Knight, A knowledge seeking, power hungry alien known as Brainiac sets his sights on Earth and spreads a virus among the members of the Justice League in order to have them work for him and help take over the city and eventually, the world. Seeing this, Amanda Waller decides to form a group of people you wouldn't exactly call heroes. She reactivates the Suicide Squad Initiative and brings forth Harley Quinn, Deadshot, Captain Boomerang and King Shark II in order to dump them in Metropolis and force them to save the world, What could go wrong? (Most of these characters are speculation I will delete if they are not in the game when they come out, some of these are based off references in previous games while some are from leaks or my personal wants.)