there already is a fourth generation. it's heartgold and soulsilver
Darkrai is a 4th Generation Pokemon, Pokemon FireRed is a 1st Generation Pokemon - 3rd Generation Pokemon of course NOT
because pokemon platinum has 4th generation pokemon. Pokemon black and white contain 5th generation pokemon
Happiny is a 4th generation Pokemon none of those Pokemon existed in previous generation games like leafgreen.
you cant. Lumineon is a 4th generation pokemon.
Impossible since its a 4th generation pokemon.
No because generation 5 Pokemon don't exist in 4th gen.
There is none!
You can't because darkrai is a 4th generation pokemon
You can't because it is a 4th Generation Pokemon available in Pokemon Diamond and Pearl.
On Cartoon Network
There is 493 Pokemon total through the 4th generation of Pokemon however the 5th generation series aka black and white are soon coming which will have more Pokemon coming!
No, the only way to get them is to migrate them from the 4th generation games.