Raichu, the rodent-like evolved form of Pikachu, is an electric-type Pokémon that uses its tail to gather electricity from both the ground and atmosphere.

As it charges, the creature stores the electricity in those circular, yellow sacs on its cheeks and once fully charged, Raichu's ears will point directly upwards.

Raichu also uses its pointed tail as a ground to prevent itself from being electrically shocked.