Ch 1
In response to new metahumans emerging, government official Amanda Waller received authorization from the U.S President to make a team of former supervillains to protect the world.
A day before…
Batman was chasing Harley Quinn and the Joker in their car through the streets of Gotham City.
"Bat-punk!" Harley snapped. "You're ruining date night!"
She turned around and fired her handgun through the window from the Batmobile but the bullets just bounced off his suit. Batman then revved up his Batmobile's thrusters and rammed into the criminals' car.
The car flipped over end over end and it crashed. Batman found Harley and got her out, then wrapped her up with an electric net gun but Joker had escaped.
After the battle, Harley was taken to Belle Reve and soon, Deadshot was also taken in by Batman right into Waller's cell.
She now had the first two members of her new Suicide Squad.