how do i get porygon and porygon z on diamond?

after u finish the whloe game go back to the mansion and go into 1 of the rooms withe the statues.save the game before u talk to him. now go talk to him and 1 of the guys will say a pokemon like minuin or proygon in your case and then go out in to the garden and serch for it. it might takre a fiar whie but yer. umm then is the name is not a pokemon that u wnated just turn the game off and on agian and keep tryin and ull get it.this may take a while

hope i helped

Chuky is right in where you can find porygon. You will not find porygonZ there however. You have to evolve porygon to porygon2 by trading with "Up-grade" first. Then porygon2 to Porygon-Z trade while holding a "dubious disc".

If you want to trade I have an extra porygon.

LaSoie

4167 6285 1657