I am drifting off in class, and I was thinking about the Elementals from the widely-discussed Brightest Day that I never read, and up popped Captain Planet. So, if Captain Planet existed in the DC Universe, summoned not by the powers of five teenagers, but the Elementals (Earth! (Martian Manhunter); Fire! (Firestorm); Wind! (Hawkgirl); Water (Aquaman)), who would play Heart? Whom among the superheroes possesses the sound mind and clean heart to offer himself up time after time for the greater good?
My vote is for All-Star Superman, Dick Grayson, or Azzarello's Wonder Woman.