Pikachu (ピカチュウ Pikachu) is a Electric-type Pokémon and the evolved form of Pichu. It can evolve into a Raichu by use of a Thunder Stone. It can evolve from Pichu via Happiness. Pikachu is famous for being the most well-known and recognizable Pokémon. Over the years, Pikachu has become so popular that it serves as the Pokémon franchise mascot. In 1998 it became a Version Mascot for the game Pokémon Yellow. In the series, Ash's pikachu had extremely strong powers, which is the reason Team Rocket are after it.
Pikachu is a small, chubby rodent-like Pokémon, covered almost completely by yellow fur. It has long yellow ears that are tipped with black. A Pikachu's back has two brown stripes, and its large tail is notable for being shaped like a lightning bolt. On its cheeks are two circle-shaped red pouches used for storing electricity, which turn yellow when its about to use an Electric attack such as Thunderbolt.
A female Pikachu looks almost exactly the same as a male with the exception of her tail. A female Pikachu's tail is rounded at the end and has an inward dent, giving it the appearance of a heart.
Pikachu's special ability is Static, which can cause paralysis in battle if hit by a physical move.