The GBA slot is on the bottom of your DS.
Routes 201 & 202 when FR is inserted in the GBA slot.
There is only one known way to find Vulpix in Pokemon Pearl. To make Vulpix appear you need a copy of Pokemon LeafGreen in the GBA slot of the DS. While Pokemon LeafGreen is in the GBA slot Vulpix should start to appear on Route 209.
To get Sableye in Pokemon Pearl you will need a copy of Pokemon Sapphire. Insert Pokemon Sapphire into the GBA slot of the DS and turn it on. When you load into Pokemon Pearl wild Sableye should start appearing at Iron Island as long as Pokemon Sapphire is in the GBA slot.
Insert leafgreen into GBA slot, then go to route 209 after you get the national pokedex.
you have to have Pokemon emerald in ur gba cartrige slot and go to route 207 and look a little bit and u will find him
On Pokemon Pearl's title screen, if the Pokemon LeafGreen game is in the GBA slot, click on "Transfer From LeafGreen" and you can choose six Pokemon from LeafGreen to transfer to Pearl, but be careful-you can't trade them back.
You can get the Electrizer in Pokemon Diamond and Pearl from wild Elekid close to the Valley Windworks. In order to find Elekid, you should have Pokemon LeafGreen in your GBA slot of your DS.
you can migrate any you caught on ruby,
With a Pokemon Emerald Cartridge in your GBA Slot, Shuckle appears at Route 224.
Route 208 and 210, but only appears if you have Pokemon Ruby in your GBA slot.
After you get it in one of the GBA Pokemon series, transfer it to Pal Park by Dual Slot.
Insert any GBA Pokemon game into the bottom slot of your DS. It'll only appear then.