Well, other than the Elseworlds' Batmen, what other ones, besides Wayne, are there?
So far as I know, there've been three Robins: Dick Grayson (who became Nightwing), Jason Todd (killed), and Tim Drake. And then there was the female Robin, Carrie Kelly, in Frank Miller's "Dark Knight Returns," but she was a one-off. As for Alfred . . . who could replace Alfred?
DP (aging comic book geek)