You need to trade one from Diamond, Pearl, or Platnium.
no u can't
Yes,you can but you only get rare Pokemon from sinnoh and hoenn.
you cant get to sinnoh in heart gold, but you can find the gym leaders from sinnoh.
he goes to sinnoh
Train it.
You have to trade them from either Diamond, Pearl or Platinum. You can't obtain them otherwise!
you cant get to the sinnoh region in Pokemon hart gold or soul silver but you can get the starter Pokemon at slip co (i think its called) once you done all gyms and defeated red (the Pokemon with emerald version).
You can't. Like the Original Gold and Silver, Only Johto and Kanto are explorable. However, with the aid of certain radio programs, you can lure out Pokemon from Hoenn and Sinnoh. You can also use the Pokewalker to get some Hoenn and Sinnoh Pokemon.
Yes.yes, once you get the national pokedex in Heart Gold you can then trade Pokemon from sinnoh
in oak and elms laboratory
no
Gold silver and crystal but you can also get on emerald if you complete the hoenn dex. Also you can choose it as a starter in Soul Silver and Heart Gold