yes. if they don't know HM moves
no
You cannot see it in the wild in Pokemon Diamond; you have to transfer it from FireRed/LeafGreen.
I think you can only pass Pokemon from Emerald to Diamond/Pearl
You get Entei only on Diamond by Transfer it from LeafGreen and FireRed or trade it with Soulsilver and HeartGold
You have to Transfer it from LeafGreen/FireRed or trade it with Platinum/HeartGold/SoulSilver
No you'll have to transfer it from LeafGreen/FireRed or trade it from SoulSilver/HeartGold.
No you'll have to transfer it from LeafGreen/FireRed or trade it from SoulSilver/HeartGold.
Put LeafGreen into your ds with diamond, but play diamond. When u get to the screen that allows u to go to your game, you'll also see another option: transfer. Click on it and it will allow u to choose up to six Pokemon from your LeafGreen PC to transfer to diamond. Once u have picked them, hit ok. Now, play your diamond game. If u go to pal park, they will be there.
You'll have to transfer a Bulbasaur from a LeafGreen or FireRed using Pal Park.
you have to catch it in firered or leafgreen and transfer it to the pal park via the dual slot
Pokemon cannot be transferred from Diamond to Leafgreen. This can be done backwards, however as Ruby, Sapphire, Emerald, Firered, and Leafgreen Pokemon can be permanently transferred to Diamond, Pearl, Platinum, Heartgold, or Soulsilver.
Yes.