What Pokemon do you need for the national pokedex that you can't obtain in either heart gold or soul silver if any?

Question

If so what pokemon ds game can they be found in?

Answer 1

Here are all the pokemon not able to be obtained in Heartgold/Soulsilver.

Comments

Okay, now do you know what ds game those can be found in?

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Platinum and Events

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All of the pokemon can be found in Platinum, or would I have to get both Platinum and Events?

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Some can be found in Platinum and others have to come from events

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Where can I find these games rather cheaply?

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And what is the range?

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And what event can I find the pokemon in?