History
Ed "Killer" Croesus used to be a professional boxer and heavyweight champion who had fallen on hard times and was living on the streets of New York as a drunk. When the Jester framed Daredevil for murder, he attacked the hero, hoping to the collect the bounty, but he Daredevil easily shook him off.[1]
Years later, Croesus had raised to a position where the Kingpin himself considered him a competitor. Croesus and several other of the Kingpin's contenders were murdered, shortly after pretending to have been murdered himself and before they could take over the Kingpin's position. Either the Kingpin himself arranged their deaths, or the secret organization The Trust did so in an attempt to prevent (or control) the upcoming gang war. Croesus was poisoned with manipulated sweet-and-sour drano in his favorite Chinese restaurant.[2]