really there is no simple explination except use dark or ghost Pokemon
you can't catch it because you already beaten the legendary
You can find out how many times you have beaten the Elite Four in Pokemon Diamond by checking your PC in the game.
Go in to every Pokemon gym and get beaten at least 10 times againgst the gym leaders.
No you can't trade with black to diamond but you can trade from diamond to black using the poketransfer lab. (you will have to have beaten the game before you can use the poketransfer lab). Hope I helped this is luke127 signing off.
u have to migrate it from Pokemon emerald, and ditto is in the cave at fallabor town after u have beaten the elite four
no I have beaten the game and havn't seen her
There is an inn where 3 Gym Leaders battle you (on the Battle Zone)
You go on to battle the champion Cynthia.
no at the Pokemon league after you've beaten the 8 gym leaders
if you have beaten the league she cant battle you again
because i have never been beaten in a Pokemon battle except for the battle frontier. because i am the best
you can't catch it because you already beaten the legendary
beaten down by close combat!
YOU CAN'T, WITHOUT BEATING THEM!!!!!!!!!!!!!!!!!! or being beaten
........
sure
You can find out how many times you have beaten the Elite Four in Pokemon Diamond by checking your PC in the game.