Yes. You actually need the national dex to go to stark mountain or anywhere in the battle zone.
in the sinnoh pokedex u dont need to c heatran he is only obtainable after u get the national dex
You don't have to see Heatran in order to complete it.
you need 150 Pokemon to get the national pokedex
no
You need to get the National Pokedex. Then, you go to the place where the Pal Park is, and you will see that the people are not standing in the way. But you need the National Pokedex.
You need to see all pokemons in your regular pokedex just see them (Wifi battle doesnt count)
No!,you just need to see them
you can obtain the pal park after you get the national pokedex, to get the national pokedex see all the the wild sihno pokemon, you only need to see them not catch them.
I think you need to see them all.
You need to get the national pokedex, which means that you need to see the 150 Pokemon in the Sinnoh pokedex.
In D/P you need to have seen 150 Pokemon to get the National Pokedex and for Platinum you need to see 210 pokemon.
to get past the people in the battle frontier, you have to complete the sinnoh dex. then you will obtain the national pokedex from professer rowan in sandgem town