From SmashWiki, the Super Smash Bros. wiki
Pikachu is the most famous species in the Pokémon Universe. Resembling a yellow rodent, Pikachu's most defining characteristics are his red cheeks and his lightning bolt shaped tail. As the tail implies, Pikachu is an electric type Pokémon. In the original Pokémon games, Pikachu was simply a normal catchable Pokémon. Its popularity grew not from its role in the games, but from its role in the anime series. Here, it served as the primary Pokémon of protagonist Ash Ketchum because he woke up too late to get Squirtle, Bulbasaur, or Charmander from Professor Oak. In the Super Smash Bros. series, Pikachu is one of only two Pokémon to appear as playable characters in all three games (the other being Jigglypuff). Pikachu enjoyed a large amount of play during the original Super Smash Bros., resulting in his top placing in that game's tier list. In the later games, Pikachu continued to fight, and in Melee his pre-evolved form, Pichu, joined him...(more)
