If you are talking about Pokemon from FR,LG,R/S/E, then yes you can but you must have beaten tyhe elite four and champion to do so. Also you have to get the national dex. One way to do so is to transfer over Pokemon from your FR,LG,R/S/E via pal park, if you have one of those games and inside you have Pokemon in your PC in those games you can transfert those over to dimond and pearl. Another way is to look out for Pokemon pop ups. Talk to dawn/lucas's little sister to find Pokemon pop ups I.E Absol on route 221.
if you mean on Pokemon, they only have it for diamond and pearl, not platinum. but you can find alternate ARDS cheat codes for Pokemon diamond pearl and platinum at elitepokemontrainers.webs.com
http://www.freewebs.com/actionreplaydipe/diamondcodes.htm
Pokemon diamond
it glittered becasue it was a shiny a very rare alternate color if u caughht it ur very lucky
Pokemon diamond Pokemon diamond Pokemon diamond
you cant be a Pokemon in Pokemon diamond
She is not in Pokemon diamond.
There is no Pokemon temple! There is such thing as Pokemon diamond.
Pokemon 134 is Finneon in diamond
Chingling is the 47th Pokemon in Pokemon Diamond.
where are special key in Pokemon diamond where are special key in Pokemon diamond
You can not get dark Pokemon on Pokemon diamond and pearl