eterna forest 10%
You must have the National PokeDex to capture Heatran.
you have to trade them from a game that has the national dex.
no
you have to get 150 different types of Pokemon
You have to have the national pokedex, because you cant find a lot more Pokemon without it. :)
you cant
You must have the National PokeDex to capture Heatran.
You can catch them on Iron Island once you have the National Pokedex. You get this by seeing all the Pokemon on the Sinnoh Pokedex.
u hav to find all of the Pokemon in the national pokedex
It depends on the Pokemon you're trying to evolve. While some Pokemon can evolve without any problems due to being in the regional Pokedex, other Pokemon (Golbat, for instance) won't evolve without the National Pokedex. Note that this is only the case in FireRed and LeafGreen - in later games, Pokemon not in the regional Pokedex will evolve, but won't be recorded until you get the National Pokedex.
you have to trade them from a game that has the national dex.
no
No, not without action replay or hacking unfortunately. I hate to say it, but sorry. There were wi-fi events but you missed them.
there was a code to fill in missing numbers for the pke dex but it would completely mess up your game.
you have to get it in Pokemon platinum version and then trade it into soul silver or heart gold. you have to do the wi-fi event to get shaymon though.
you need a cheat for it.
you can't