You HAVE 2 get national pokedex by seeng all the sinoh Pokemon then put either Saphire,Ruby or Emerald then migrate a treecko from the GBA game and catch it in the Pal park.............but I don't think you can catch treecko anywhere in the game .........
Omark......
The only way is to start the game with Treecko as your starter.
In game, no one will. If you have a friend or another game you can get one from them/that. If you have another game then restart (if you really want a Treecko), pick Trecko, and trade it over.
get treecko as your starter
when you start the game you choose torchic first instead of treecko or mudkip
Treecko was created in 2002.
You cannot breed a treecko unfortunately but you can get a treeko from professor Birch in the beginning of the game
Treecko evolves at level 16. Treecko evolves into Grovyle.
Treecko is a Grass type pokemon.
You can't catch Treecko, because it's a starter pokemon. There's only one in the whole game and if you didn't choose it as your starter in Littleroot you can't catch it later.
treecko will evolve at level 16 I think.
Treecko is a Hoenn region Pokemon. You cannot catch him in Platinum because it is the Sinnoh region. The only way to get the Treecko is if you have the game Pokemon Emerald, Ruby or Sapphire and when you beat Platinum, you go to the Pal Park which is located at the south of Sandgem town and then to the east. When the Pal Park is open, just save the game and turn off your DS. Put your Pokemon Ruby Sapphire or Emerald cartridge into your DS and start your game. When you are at your Game menu, find: "Migrate from [Game Cartidge name]". You need 6 Pokemon to migrate, find your Treecko and enjoy!
Treecko is a completely optional Pokemon, and therefore there is no order of events that directly require the possession of a Treecko or any other Hoenn starter.