It depends on if you like Sceptile, Blaziken, or Swampert. Treecko: Sceptile; Torchic: Blaziken; Mudkip: Swampert.
treecko
pokemon ruby, sapphire and i think emerald :)
trade with people who have them.
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.
Pokemon Ruby Sapphire and Emerald. hope this helped!
Pokemon Ruby has Pokemon that Pokemon Sapphire does not and Pokemon Sapphire has Pokemon that Pokemon Ruby does not.
You would have to start a new game and catch the Pokemon again.
Eevee does not appear in the wild naturally in Pokemon Sapphire. In order to get one, you have to trade it from either FireRed or LeafGreen, where you can get one in Celadon Mansion, or from Pokemon XD, where you start with one.
YOU LEVEL IT UP PATIENTLY!!!!!!!!!!!!!!
start your diamond and go to transport Pokemon ruby,Sapphire,etc.
Start by getting a lot of pokemon balls and then catch as many Pokemon as you can. Just catch Pokemon till you get to 200.
There is no Pokemon mansion in sapphire.