You have to cheat.
sorry but you have to get another diamond/pearl/platinum game and trade the other starters from there.
Go to other regions and talk to the professors sorry that's all i know
You will have to get a friend to start the game over and over so he can trade over the starters
me
There are a lot of them, like the starters from the other generations.
its impossible to get sinnoh starters without trading them from other gen IV games. use the palpark in fuschia city to trade them from pearl/diamond/platinum.
You can only get Chimchar, Turtwig and Piplup as a starter. If you want to get the other starters look for them on the GTS or ask you friends.
all three starters and some other high level Pokemon that you've got mostly good moves though not necessarily types.
You can't trade unless you have seen it. You can see it, the person has to have your friend code and you have to have theirs. Then you can go and get a charmanders and others starters from other people
No matter what game of Pokemon you play to get all the starters you have to trade with the other versions.
i have a chickorita level 98 how
The new Pokemon game is Pokemon Platinum. Other than that, I don't know.There is also Pokemon heartgold and soulsilver that comes out in 2010. In these games you are in the Johto region and you get to have the starters Totodile, chikorita, and cyndaquil. You also have a chance to trade them onto your Pokemon pearl, diamond, and platinum games to get them on your pokedex.