A large contributing factor to Batman's continued popularity since the character's creation in the 1930's is the wide array of fascinating villains he regularly finds himself doing battle with. Gotham's gallery of rogues is packed with bold, enthralling characters that act as the perfect counter balance to The Caped Crusader.
However, with the increasing number of interpretations of Batman in pop culture, the ability to present these fantastic villains in fresh and interesting ways is quickly diminishing. Harley Quinn already feels overplayed, and the first cinematic vision of the character debuted less than a year ago.
Later additions to the Batman canon don't tend to be particularly memorable either (Mr Toxic or Emperor Blackgate, anyone?), so clearly there's an issue with just outright inventing new adversaries for Batman too. It might be time to start looking elsewhere.
Thankfully, we find ourselves in the midst of the fabled golden age of television, and compelling characters are in plentiful supply. Whether they're already bad guys in their own right, or simply one tragic origin story away from turning to the dark side, TV has a whole host of characters who could make perfect pre-formed antagonists for Batman when the well of ideas inevitably runs dry.