Characters created by Atsuko Nishida

Pikachu (; Japanese: , Hepburn: ) is a Pokémon species in Nintendo and Game Freak's Pokémon media franchise, and the franchise's mascot. First introduced in the video games Pokémon Red and Blue, it was created by Atsuko Nishida at the request of lead designer Ken Sugimori, with the design finalized by Sugimori. Since Pikachu's debut, it has appeared in multiple games including Pokémon Go and the Pokémon Trading Card Game, as well as various merchandise. While Pikachu has been primarily voiced in media by Ikue Ōtani, other actors have also voiced the character including Kate Bristol, Ryan Reyno

Bulbasaur (), known as in Japan, is a fictional Pokémon species in Nintendo and Game Freak's Pokémon franchise. First introduced in the video games Pokémon Red and Blue, it was created by Atsuko Nishida with the design finalized by Ken Sugimori. Since Bulbasaur's debut, it has appeared in multiple games including Pokémon Go and the Pokémon Trading Card Game, as well as various merchandise and the 1996 anime. In media related to the franchise, Bulbasaur has been voiced by various voice actors, including Megumi Hayashibara in Japanese, and Tara Sands and Michele Knotz in English.

Charmander (), known in Japan as , is a Pokémon species in Nintendo and Game Freak's Pokémon media franchise, and the first form of its respective evolutionary line, which includes Charmeleon and its final form Charizard. First introduced in the 1996 video games Pokémon Red and Blue, it has appeared in multiple games including Pokémon Go and the Pokémon Trading Card Game, as well as various merchandise.

Squirtle (), known as in Japan, is a Pokémon species in Nintendo and Game Freak's Pokémon franchise. It was designed by Atsuko Nishida. Its name was changed from Zenigame to Squirtle during the English localization of the series in order to make it "clever and descriptive." In animated appearances, Squirtle is voiced in Japanese by Rikako Aikawa and in English localizations by Eric Stuart, and later Michele Knotz.

Raichu (; Japanese: , Hepburn: ) is a Pokémon species in Nintendo and Game Freak's Pokémon media franchise, and the evolved form of series mascot Pikachu. First introduced in the 1996 video games Pokémon Red and Blue, it was created by Atsuko Nishida at the request of lead designer Ken Sugimori, with the design finalized by Sugimori. Since Raichu's debut, it has appeared in multiple games including Pokémon Go and the Pokémon Trading Card Game, as well as various merchandise. In media related to the franchise, Raichu has been voiced by various voice actors, including Urara Takano, Kei Shindō, F