uh sorry there're only 493 pokemon.
Yes, and No. You Can find the Pokemon Chansey, But there are no Pokemon by the name of Chansy capturable on Pokemon Diamond, Pearl, or Platinum versions.
you re-name your Pokemon in Pokemon pearl by going to eterna and going the the building right above the 2nd gym. you talk to the old guy. he is called the name rater.
After Pokemon Diamond and Pearl there will be Pokemon Battle Dimension.
Yes, Pokemon Diamond and Pearl's region name is Sinnoh Region.
in etrna
Drifloon is the name when it is not evolved.
I am sorry to tell you, but there is no such place as Springfield in Pokemon Diamond or Pearl. Perhaps you are confusing it with the name of another place.
If you mean the Sinnoh Pokedex, then it's Barboach. If you mean the National Pokedex, then it's Slowbro.
anything you want
# 117 is: SEADRA- a water type Pokemon entry: It's spines provide protection. It's fins and bones are prized as traditional medicine ingredients.
No, Pokémon Pearl is for the Nintendo DS.
you can name it whatever you want!