Which ever one effects your rivals Pokemon the best
Get a kanto starter :p
uh u train it
In Pokemon Heartgold and Soulsilver you can get a Johto starter from Professor Elm, a Hoenn starter from Steven, and a Kanto starter from Professor Oak
you can get a kanto and hoenn starter, get kyogre or groudon and anything else
you go to professor oak lab and get a kanto starter then go to the celidon communities and get a hohin starter
You can catch every Pokemon, you can do the arceus and groudon events, you can Get a kanto starter from professor oak, a hoenn starter from steven at the silph building, you can catch mewtwo
Once you've beten the jhoto and kanto gyms and elite four you will have the option to face red {the character in blue and red} When you beet him prof oak will reward you with 1 kanto starter.
After beating all 16 gyms, beat red in a battle, then Oak will give you one Kanto starter pokemon.
You get a Kanto starter, unlock Groudon and Kyogre, if you go to Silph Co you get a Hoenn starter, and I think that's it.
After clearing the Mt. Silver dungeon, you can select a Kanto starter at Professor Oak's laboratory.
once you defeat red in mt. silver he will give you a kanto starter.... After that you should go to saffron city in the silph co building and he will give a hoenn starter on the colour stone you choose.
You will just receive 1 of the Kanto Starter Pokémon from Professor Oak in SoulSilver meaning you will need to choose between Bulbasaur, Charmander and Squirtle.