Pikachu



 Pikachu ( ピカチュウ Pikachu ) is an  Electric  -type Mouse Pokémon   and the evolved form of  Pichu . It can evolve into a Raichu  by using a Thunder stone . It can evolve from Pichu via happiness. Pikachu is famous for being the most well-known and recognizable Pokémon in Generations 1-5. Over the years, Pikachu has become so popular that it serves as the Pokémon franchise mascot. In 1998, it became a v ersion mascot  for the game Pokémon Yellow  In the series, Ash's Pikachu had extremely strong powers, which is the reason Team Rocket is after it.