The Pokemon Dream World?

Question

What Pokemon can you get in The Dream World that are not Pokemon you can get in ordinary gameplay? So not like Rattata B2/W2 or Trubbish. And where can you getthem?

Answer 1

All Pokemon obtained in the Dream World can be obtained in ordinary Gameplay.
No rare Pokemon has been introduced that can't be obtained by ordinary gameplay or by some simple PokeTransferring.