there are 150 kinds of Pokemon that you can see and/or obtain. Unless you have friend trade you Pokemon that you can only get in pearl to you, you'll never obtain them all. In Pokemon diamond and pearl all you have to do is see the Pokemon and you get its data unlike the older versions where you have to obtain them.
you have to catch all of the pokemon in diamond or SEE all of the pokemon
All of what?
The only way you can see all the Pokemon on diamond is by going into the GTS and global trade different Pokemon.
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
yes
then you beat the game
no way
there is no such code.
no you cant get cheat for all the pokemon.
No, not all Pokemon in Diamond can learn Hyper Beam.
get an action replay, get the Pokemon modifier cheat for it, then catch all the Pokemon.