The main character in Pokémon Mystery Dungeon: Team Go-Getters Out of the Gate! special is a Squirtle that claims that he used to be human. He joins Team Go-Getters in their rescue work. While he can't use Water Gun, he is happy to use Bubble because it looks pretty. Giovanni was revealed to have a Squirtle in Squirtle, the Crybaby Pokémon when he was coming up with three grand schemes. It takes time for the shell to form and harden after hatching. It sprays foam powerfully from its mouth. Moltres • Munchlax • Onix • Oshawott • Palkia • Piplup • Porygon2 • Pyukumuku • Raikou • Scizor • Snivy

The shell is soft when it is born. It soon becomes so resilient, prodding fingers will bounce off it. Squirtle physically debuted in Here Comes the Squirtle Squad as the leader of the Squirtle Squad, a gang of rogue Squirtle who were deserted by their Trainers. Ash befriended and caught this Squirtle, who stayed with Ash until The Fire-ring Squad!, when it returned to the Squirtle Squad. However, it briefly reappeared in Pokémon the Series: Ruby and Sapphire, to assist Ash with his final battle against Brandon. Charizard Sea 2019, Jirachi Sea, Gengar Sea, Mewtwo Sea, Charizard Sea 2020, Bulbasaur Sea, Charizard Sea Final, Jirachi Sea Final, Mewtwo Sea Final Squirtle's design is based on both its final evolved form and baby turtles [2], though its anatomy and semi-aquatic lifestyle are much more similar to terrapins, with proportions matching those of the big-headed turtle. Much like Wartortle, its tail is a reference to Japanese legends of the minogame (蓑亀), a turtle which lived for 10,000 years and grew a tail made of seaweed.In Generation II, Skull Bash was its signature move, but other Pokémon could still inherit it via breeding. Squirtle doesn’t bask in the sun just to dry off its shell—it’s also absorbing nutrients to help it grow strong. It’s still weak for now, though, so it often needs friends like Lapras to rescue it.

A Squirtle appeared in Gonna Rule The School!, belonging to the Pokémon Trainers' School. It was temporarily loaned to one of the school's underage students for use. Ash's Pikachu also meets an abandoned Squirtle in the chapter Pikachu's Excellent Adventure. This Squirtle, along with other Pokémon, helps Pikachu find the Hidden Village after he is separated from Ash and friends.In Friends to the End, a Trainer's Squirtle was at the closing ceremonies of the Indigo Plateau Conference.