Pikachu (PXSSB)

Pikachu (ピカチュウ (Pikachu) in japanese) is a startable playable Electric type in Pokémon X Super Smash Bros.. According to the official Pokédex, Pikachu is classified as Pokémon #025 and debuted in Pokémon Red/Blue/Yellow. Being well known in the world, Pikachu is playable in all Super Smash Bros. games too. 
Ikue Ohtani voices Pikachu's voiceclips as in all Super Smash Bros. games.