Wildcat
Ted Grant was the heavyweight boxing champion of the 1930's. When accused of murder, Ted created a sleek black costume and used his fighting abilities to clear his name. Ted continued to fight crime as Wildcat, and became a member of the Justice Society of America.
Over the years, Wildcat has taught many other crimefighters such as Batman and Black Canary. He was also magically given nine lives like a cat, which help keep him young and vigorous today.