Pikachu is an Electric-type Pokémon and known as the Mouse Pokémon. Pikachu is argubly the most well known Pokémon of all time, serving as the Pokémon series' overall mascot. Pikachu's popularity arguably comes from the anime where it serves as the signature Pokémon and best friend of protagonist Ash Ketchum.
Super Smash Bros.
Pikachu is one of the twelve playable characters in Super Smash Bros.. Pikachu has four alternate costumes.