Originally Posted by DigificWriter
They did, with Ra's al Ghul in Batman Begins.
And yes, Ra's is one of Batman's main rogues. He's not as popular as Joker, Two-Face, or Riddler with general audiences, but he's still a main rogue.
But it makes sense with Ra's...for a character whose whole thing is dying and resurrecting...a realistic take on that power set would be a fake figure head who dies and is replaced.