Deadshot

Floyd Lawton as a child lived in a apartment in Gotham City. His neighbours was a gang leader, the walls we're paper thin and during a gang fight the bullets went threw and killed his family (His Parents, and Sister). Well that's what he told people, his origin was he lived in a rich house. But his father was a drunk, he would come home and beat him and his older brother. His older brother would take beatings for Floyd so he wouldn't have to, one night his Father beat his brother so much that he was hospitalized. Floyd grabbed one of his Father's guns and tried to shoot him but missed and shot his older Brother. He then left and made a promise, that he'll come back and kill his father.

The rest of his origin is fuzzy, he learned how to shoot as well as he can and soon became the best marksmen on Earth. A couple years after he fought Batman and his daughter Zoe talked him out of it and not to kill him. Floyd went away willingly, and Waller using her power's had him put into her care. Now he's the head of the Suicide Squad.