Blackguard

A creature of DC's Copper Age, Blackguard stepped onto the page in 1987 courtesy of creator Bob Greenberger, debuting in the legendary reference series Who's Who: Update '87 — practically a badge of honor for any character worth cataloguing. Over roughly two decades, this villain carved out a niche in the DC universe, turning up in company that includes heavyweights like Green Lantern, The Flash, and Ted Grant, which tells you something about the caliber of trouble Blackguard represents. Most notably associated with Guy Gardner: Warrior and the classic Brave and the Bold, he's a compact but genuine piece of DC history — the kind of deep-cut antagonist that reminds devoted fans just how richly populated the universe really is.