The creators of Avatar: The Last Airbender released a very nice art book (that for some odd reason, is no longer available). I purchased it a little over a year ago and gave it to a friend of mine's grandson. The young man also enjoyed the series. Anyway, in the book, there is an image of Toph(the male version) and he's dressed similar to Toph, but he is very tall and quite large in size. If you have heard that The Boulder was originally supposed to be Toph,the I suppose your source was a good one.