Nothing happens.
They disappear forever.
in almost every cave earl in the game
No.. it moves the Pokemon you have in the gba game to the nds one and you have to catch them in a place called pal park
there isn't a Pokemon ranch on Pokemon diamond, its a complete other game! there isn't a Pokemon ranch on Pokemon diamond, its a complete other game!
You can not buy Pokemon from the game corner in Pokemon diamond, but you can in heartgold and soulsilver
when you catch all the unkown in platinum included every letter
Alamos Town does not appear in the Pokemon Diamond version of this game. It is in the movie, but not on this game.
You can buy Pokemon Diamond at EB games and Game. Any game shop.
You can get Poochyena into your Pokemon Diamond by migrating it from a Sapphire, Ruby, or Emerald Pokemon game.
then you beat the game
No. The game you are asking about is actually two games! Yeah. Pokemon Diamond. And Pokemon Pearl. Why do you think they put a slash between the "diamond" and the "pearl"?
If you knock out Azelf in Pokemon Diamond, Azelf will be gone forever (unless you have saved before battling Azelf and shut off the game and turn it back on to try again).