You can get the National Pokedex in Diamond when you see all 150 Pokemon, but not necessarily capture them.
no
150 Pokemon
aftewr you get your national pokedex you will get a place where you can catch it only of you have the bayleaf on Ruby.
not so easy for Pokemon dimond,perl and platimun complet your normal sinnoh pokedex
In the Pokedex, it's Unown.
after you get the national pokedex go to hearthome city and go to the house beside the Pokemon center and talk to the girl ( she does not like you to drag you feet)
dalaga(dimond) or palkia(pearl) and azlef mesprit and uxi(sorry about the spelling)
You do need the national pokedex for the Pokemon modifier. the Pokemon modifier uses the national pokedex numbes. you can not use the sinno pokedex.
There are 493 Pokemon in the current National Pokedex.
No you just need to go the tv between 8pm and 4am this is only for platinum for dimond/pearl you need the national pokedex.
Pokemon #4 in the National Pokedex is Charmander.
you can only see him when you get the national pokedex, at pal park in pearl and dimond. in platinum you can see him in enterna.