Can Pokemon Diamond Arceus be traded to get Giratina in Heart Gold?

You cannot trade Pokémon directly between Pokémon Diamond and Pokémon HeartGold/SoulSilver. This is because they are from different generations and are not compatible with each other.

Therefore, you cannot trade Pokémon Diamond Arceus to Pokémon HeartGold to obtain Giratina.

However, there are ways to get Giratina in HeartGold:

* Capture it: You can find Giratina in the Distortion World, a special location accessible after completing the main story.

* Trade with someone who already has it: If you have a friend or someone willing to trade, you can trade for a Giratina.

Keep in mind that to capture Giratina, you need to complete the main story of the game and defeat the Elite Four.