no, there is only one
the same
you go battle bertha the second elite four member.
You can find out how many times you have beaten the Elite Four in Pokemon Diamond by checking your PC in the game.
it is the elite four
nation pokedex
The champion in the Elite Four.
defeat the elite four
-mongmong908
kill the elite 4 noob
In the Pokemon games, the Elite Four are kind of the final boss to the games. In every game (including Pokemon Diamond) you will find them at the end of Victory Road.
Beat Cynthia after Elite Four
erm......you battle them.