Squirtle

Squirtle (Japanese: ゼニガメ Zenigame) is a Water-type Pokémon introduced in Generation I.
It evolves into Wartortle starting at level 16, who evolves into Blastoise starting at level 36.
Along with Bulbasaur and Charmander, Squirtle is one of three starter Pokémon available at the beginning of Pokémon Red, Green, Blue, FireRed, and LeafGreen.
It is also available in Pokémon HeartGold and SoulSilver, after obtaining all sixteen badges and defeating Red.