Squirtle (Pokémon)/Anime/Pokémon Origins

Blue's Squirtle
chose Squirtle as his starter Pokémon in File 1: Red. He later used it to battle 's and won with ease. Sometime before Red went to the Pokémon Tower in File 2: Cubone, Squirtle evolved into. It was shown later as a in File 4: Charizard, when it battled against Red's fully evolved.