yes you can but only by transfering them from other games or using action replay codes
That is Palkia.
cach pearl the legndary Pokemon
you have to catch all of the pokemon in diamond or SEE all of the pokemon
It is raquaza and it is really hard to make it join
The only way you can see all the Pokemon on diamond is by going into the GTS and global trade different Pokemon.
All of what?
You can get Pokemon diamond for PC from www.roms.zophar.net/Nintendo-ds/all
you've gotta be crazy if you think someones gonna write all the Pokemon you can catch in diamond
The major one is Ho-oh, although, as far as i remmber i think articuno zapdos and moltres are obtainable too.
yes
then you beat the game
no way