For the three shiny legendary dogs and the event Celebi go to Castelia and use the get the relocator. For everyone else, you have to beat the Elite Four in Black first. Then go over to Route 15 and go into the Pokemon transfer lab and talk to the guy at the end. There will be a very annoying mini game that you have to catch the Pokemon once you select the six you want to send over.
you can transfer it from Pokemon soulsilver/heartgold to Pokemon black
you can trade pokemon from heartgold to black but you can only transfer the pokemon in heartgold not trade it from black
First, you have to transfer firered version pokemon to diamond, pearl, platinum, heartgold, soulsilver. Then you can transfer it to Black or white
If you Poke Transfer from Heart Gold to Black, the Pokemon should be in your box
you can't, you can only transfer to black and white
If you have Celebi on Pokemon Diamond, Pearl, Platinum, HeartGold, or SoulSilver, you can use the PokeTransfer machine in Pokemon Black and White to transfer it.
After beating the story and obtaining the National Pokedex. Go to Route 15 in Pokemon Black to the Pokemon Shifter Building. Connect a second DS running Heartgold. There you will be able to transfer up to 6 Pokemon from Heartgold to Black/White. Make sure the Pokemon transfering have no items and do not know HM moves(Cut, Surf, Flash, ect) You can not trade or transfer from Black/White back to Heartgold.
you will have to transfer one from Pokemon diamond, pearl,platinum,soulsilver,and heartgold
You can't. But you can migrate Pokemon from Pokemon Emerald to the Pal Park in Pokemon Diamond, Pearl, Platinum, HeartGold, or SoulSilver and transfer them into Pokemon Black.
On Pokemon black you can only transfer "English Version DS Pokemon Siries Games." Such as Pokemon Heartgold, Pokemon Soulsilver , Pokemon Pearl, Pokemon Platinum, and Pokemon Diamond. But you can trade from Pokemon White and Pokemon Black.♥ :)
You cannot transfer pokemon from HeartGold to Black until after you finish the main part of Black. Do note that you will be transferring pokemon from HeartGold to Black, not trading pokemon between the games.
You can transfer Pokemon, but you can't trade. Since HeartGold was released before Black, HeartGold doesn't know Black exists. However, Black knows HeartGold exists. You need to be on Route 16 in Black version, which requires beating the Elite Four.