Board Thread:General Discussion/@comment-24099946-20131201223438/@comment-4324417-20140921200531

A girl couldn't be Batman. Hence the "man" part. Roles such as Robin are considered to be Unisex in some cases, since the name "Robin" itself is Unisex. And roles such as Batgirl, are not. Basically female character could take over his role as the protector of Gotham, but not his identity.

A prime example is Kate Kane. Though she's not as effective as Bruce Wayne or Dick Grayson, in my opinion, she could still pull it off.