The Ace Androidis a robot employed by the Royal Flush Gang. The first robot was design by Derek Reston an industrialist and engineer who was being mind controlled by Hector Hammond. This robot was advanced enough to pass as human, and stood in contact with Reston. It was destroyed by Black Canary.
the Ace Android acted as the leader of the gang. With later models leadership passed to the King when a robot was employed.
Later models were considerably larger and less man-like, and served as muscle. They were usually kept out of the fight until the last moment when the gang hoped to press their luck or make their getaway.