Eevee

Eevee ( ), known in Japan as Eievui (Japanese: イーブイ, Hepburn: Ībui), is a Pokémon species in the Pokémon franchise. Created by Satoshi Tajiri and designed by Motofumi Fujiwara, it first appeared in the video games Pokémon Red and Blue. It later appeared in a variety of merchandise, spin-off titles, and both animated and printed adaptations of the franchise. It is also the game mascot and starter Pokémon for Pokémon: Let's Go, Eevee! Known as the "Evolution Pokémon" in the games and the anime, Eevee has an unstable genetic code, which allows it to evolve into one of eight different Pokémon, known as Eeveelutions, depending on the situation. The first three of these evolutions, Vaporeon, Jolteon, and Flareon, were introduced alongside Eevee in Pokémon Red and Blue. Five more evolutions have since been introduced in Pokémon games: Espeon, Umbreon, Leafeon, Glaceon, and Sylveon. Eevee is one of the most popular Pokémon among fans, due to its character design and ability to evolve into many forms with different Pokémon types.