Danny Phantom/Batman

Cast
More ideas?
 * Danny Phantom as Batman
 * Dani Phantom as Batgirl
 * Timmy Turner (from FOP) as Robin
 * Dudley Puppy (from T.U.F.F. Puppy) as Nightwing
 * Tucker as Alfred (they're both smart)
 * Sam Manson as Rachel Dawes
 * Freakshow as the Joker