ARcues
his name is actually Arceus, and he is the most legendary of legendary Pokemon in diamond. he is only obtainable through a Nintendo event with the azure flute
Probably either Spiritomb or Garchomp
Celebi is a legendary Psychic and Grass type Pokemon. It can only be obtained by trading or through a Nintendo event.
mesprit,uxie,azelf,dialga,rotom only in Pokemon diamond you get cresselia and darkrai from a Nintendo event dratini,dragonair,dragonite is not a legendary giratina you can only get it in platinum
the strongest Pokemon is arceuse
The door can only be unlocked through a Nintendo event to get the legendary Pokémon: Drakrai
Some of the strongest Pokemon trianers in Pokemon diamond & paerl
Diamond is not a Pokemon but i think Arceus is one of the strongest Pokemon ever.
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