Squirtle is a small blue bipedal turtle-like creature. It is also the first stage prevolution of Blastoise, with Wartortle as the evolutionary stage between them. In Pokémon (Red, Blue, FireRed, and LeafGreen versions), Squirtle is one of the three starters that the player can choose. It evolves into Wartortle at level 16 onwards and into Blastoise at level 36 onwards.
When it hatches, its shell is soft, and forms and hardens over time until it becomes resilient enough that prodding fingers will bounce off it. The shell is a great protective measure, and the Pokémon withdraws into its shell when in danger. The shell, in addition to protection, also has a rounded shape with grooves on its surface, which helps minimize resistance in water and enables it to swim at high speeds. When threatened, it withdraws into its shell and squirts out water with vigorous force.
A giant balloon of Squirtle (in actuality the 3D model of Squirtle used in Pokémon Stadium for Nintendo 64) is one of the many floating and bending "platforms" that comprise the Poké Floats stage. It is the first balloon in the stage and its head and arms are where the fighters start off on at the beginning of the match.
Squirtle features as a collectible trophy, unlocked as one of the 200+ trophies that can be collected randomly during normal play, such as in the Trophy Lottery and throughout the various Single-player Regular Matches. It reads as follows:
Retreating into its shell and spitting water at its foes is Squirtle's trademark response to danger. It's one of the three Pokémon that trainers can receive from Professor Oak in Pokémon Red and Blue. Squirtle evolves into Wartortle and then Blastoise, ramping up its water powers with each evolution.
A Tiny Turtle Pokémon. In times of danger, it pulls its arms and legs inside its shell to protect itself from enemy attacks. When it conceals its neck, it also shoots a powerful stream of water from its mouth. Its shell not only protects its body, it also reduces water friction when it's in the water. When it levels up, it evolves into Wartortle.