Treecko, the Wood Gecko Pokémon. Treecko are able to climb smooth vertical walls and use their thick tail to attack opponents. Since Treecko build their nests in large trees it is said that those trees will live a very long life.
– Ash’s Pokedex
Treecko is the first Pokemon of Gen III, being the Grass starter. I’ve never owned a Treecko, ’cause I’ve always chosen Mudkip out of the third gen starters. Treecko looks kind of weird to me, with the two lump things on top of its head.
In the anime, Ash had a Treecko. He found it in the wild (somehow), and it likes to act “cool”, always chewing the end of a plant stalk.
Stat-wise, Treecko has good Speed and good Sp Attack.