You must trade otherwise you cannot receive it.
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.
trade it over from emerald or ruby and Sapphire
Mudkip is AWSOME as well as Torchick. I have a Grovile. It is good. My friend says that Torchick is powerful.
Here are a few facts about Treecko. Treecko is Pokemon number 252 and was released as the grass starter for the third generation (advanced generation as it is sometimes called). Treecko evolves into Grovyle at level 16 and then into Sceptile at level 32.
Treecko the Grass Type Pokemon Mudkip the Water Type Pokemon Torchic the Fire Type Pokemon I recommend Mudkip.
Torchic, Mudkip and Treecko
Ruby, Sapphire and Emerald.
The starter Pokemon are Treecko,Torchic and Mudkip.
Treecko, Torchic, and Mudkip.
Treeko is only available as a starter Pokemon. It can only be owned if you choose it as a starter or by trade.
Mudkip is a starter Pokemon on Pokemon Emerald, Sapphire and Ruby. This means that it is the first Pokemon you get. You get starter Pokemon near the beginning of the game from Professor Birch. Other starter Pokemon are Torchick and Treecko.
There's three starter Pokemon in Emerald, but you can only choose 1. The starter Pokemon are Mudkip Water/ground, Torchic Fire/fighting and Treecko Grass.
The starter Pokemon for Emerald are Torchic, Mudkip, and Treecko. Their second stages are Combusken, Marshtomp, and Grovyle. Their final evolutions are Blaziken, Swampert, and Sceptile.
You need to choose Treecko as your starter, then he evolves at Lv.16-18.
it's a starter pokémon. you can pick it at the beggining. If you didn't pick it then you have to trade it from someone.
Only you, if you picked it as a starter.
The starter Pokemon for Pokemon emerald are Mudkip, Treecko, and Torchic. In my opinion they are the worst set of starters,and I highly recommend for you not to get this game, but I can't force you so.....yeah.