yes
If you want to get Pulkia(Palkia) go see the elderly woman in Celestic Town, talk to her and she'll show you a picture of Palkia. After that you should be able to see Palkia in the GTS and be able to trade for it. Or go buy Pokemon Pearl and trade from your Pearl version.
In Diamond and Pearl They're Respective Cover Pokemon are in The Same Spot as The Other
at the top of mt. coronet!!!!!!!!!!! catch Dialga, go out then come back and Palkia will be there.
1) It's spelled Palkia and Dialga. But you got Giratina right though. 2) Sorry, but you can't. You can only catch all three in Platinum.
you mean what are legendary Pokemon and they are Pokemon that are very powerful and there are only one of each in each game. there are many different legendarys like ho-oh, lugia, groudon, rayquaza, mew, mewtwo, kyogre, and many more.
you have to have palkia or dialga, you can get palkia or dialga at spear pillar. But if you want mesprit dont use the master ball on palkia and dialga. this is only on diamond and pearl in platinum you get to sunyshore city by catching or defeating giratina in distortion world or reverse world