Pikachu

Pikachu is the Pokémon mascot. It's the Mouse Pokémon, number 25 of the Pokémon and a notable owner is Ash Ketchum from the anime. Pikachu is the Pokémon with the character in it for the anime, notably being the main Pokémon. He is an Electric Pokémon, which means he can control electricity and send it out of his body. Pikachu has appeared in the Super Smash Bros. series and will probably always will, for the time being. He has already been revealed as a character in Super Smash Bros. Brawl. His moves include: (From Melee)

B - Thundershock

B → - Skull Bash

B ↑ - Quick attack

B ↓ - Thunder

Trivia

 * In Wario Land 3 Wario collects a treasure called Pokémon Pikachu.