Pikachu

Pikachu is the Pokemon mascot. He's number 25 of the Pokemon and a notable owner is Ash Ketchum.

Pikachu has appeared in the Super Smash Bros. series and will probably always will.

He's going to appear again in Super Smash Bros. Brawl.

Also in Wario Land 3 Wario collects a treasure called Pokémon Pikachu.