All the legendaries that you can catch on Pokemon Diamond are as follows;
Dialga, Uxie, Mesprit, Azelf, Cresselia, Heatran, Giratina.
To get more legendaries on Diamond, you can attend events in order to get Arceus, Shaymin and Darkrai.
If you have Pokemon Ranger, you are able to recieve Manaphy via the Main Menu of PKMN Ranger. As an added bonus, make Manaphy have an egg with Ditto at the Day Care, the hatchling will be another legendary called Phione. ( Manaphy is the only legendary on this game that can have eggs. )
You can also recieve Palkia by trading with your friends.
you cant unfourtanately
Empoleon is not a legendary Pokemon. It is the final evolution of Piplup, one of the starter Pokemon in Pokemon Diamond, Pearl, and Platinum.
capture the legendary and train your Pokemon
about 150 Pokemon . Unless you want to count legendary about 160.???????????????? I don't know the exact amount!!!!!!!!!!
when you get your seventh badge and you will head for mount cornet
5
One each.
the legendary Pokemon in diamond and pearl are dialga and palkia.
No, a Bidoof cannot evolve into any Legendary Pokémon in Diamond.
Heatran
a lot of legendary Pokemon
Dialga
you cant unfourtanately
arceus
only 2 red gyarados and palkia
you can't catch it because you already beaten the legendary
no