Captain Boomerang

George Harkness was low on cash and found an easy way to make quick cash. Years later his addiction was so large that he robbed EVERY bank in Australia. He longed for a challenge and moved to the USA for a fresh start. He robbed almost every bank until he hit Central City, where The Flash came and arrested him.

Shortly after being arrested, Amanda Waller used her government power to have him put into his custody. Where he was put to work as a member of the Suicide Squad. He eventually escaped but he got put into Waller's custody once more, and to this day he is still currently a member of the Squad.

When The Flash arrested him Capt. Boomerang swore revenge. So when he escaped Waller's custody he joined a team of people who also hated The Flash. This team was called The Rogues.