With Diamond & Pearl being on the DS which contains a slot for GBA games, there is an extra feature utilising this. When you have certain Pokémon games in your GBA slot after obtaining the National Dex, some new Wild Pokémon appear in certain areas for the period of having the respective game in the GBA Slot. However these areas do not appear in the Pokédex so this page will be used to help you with the Pokémon Locations for each of the games. These Pokémon and their evolutions are only available with this method:

Ruby in the GBA Slot

Nat No. Pic Name Type 1 Type 2 Location
#273 Seedot   Eterna Forest
Route 203
Route 204
#274 Nuzleaf Route 229
#303 Mawile   Iron Mountain
#335 Zangoose   Route 208
#338 Solrock Lake Verity Surroundings
Lake Verity
Lake Acuity
Lake Valor
Mt. Coronet
Spring Path
Turnback Cave

Sapphire in the GBA Slot

Nat No. Pic Name Type 1 Type 2 Location
#270 Lotad Route 203
Route 204
Route 205-North
Route 212-South
#271 Lombre Route 212-South
Route 229
#302 Sableye Iron Mountain
#336 Seviper   Route 208
#337 Lunatone Lake Verity Surroundings
Lake Verity
Lake Acuity
Lake Valor
Mt. Coronet
Spring Path
Turnback Cave

Emerald in the GBA Slot

Nat No. Pic Name Type 1 Type 2 Location
#204 Pineco   Eterna Forest
Route 203
Route 204
Route 229
#207 Gligar Stark Mountain
Route 206
Route 207
Route 214
Route 215
Route 227
#213 Shuckle Route 224
#216 Teddiursa   Route 211
Lake Acuity
#217 Ursaring   Lake Acuity
Route 216
Route 217

FireRed in the GBA Slot

Nat No. Pic Name Type 1 Type 2 Location
#010 Caterpie   Route 204-South
#011 Metapod   Eterna Forest
#023 Ekans   Route 212-South
#024 Arbok   Safari Game
#058 Growlithe   Route 201
Route 202
#239 Elekid   Route 204-South
Valley Windworks

LeafGreen in the GBA Slot

Nat No. Pic Name Type 1 Type 2 Location
#013 Weedle Route 204-South
#014 Kakuna Eterna Forest
#027 Sandshrew   Wayward Cave
#028 Sandslash   Route 228
#037 Vulpix   Route 209
#240 Magby   Stark Mountain
Route 227

Any Pokémon Game in the GBA Slot

Nat No. Pic Name Type 1 Type 2 Location
#093 Haunter Forest Mansion
#094 Gengar Forest Mansion (room with eyes on the wall)

 
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