Pokemon Squishmallow - Pikachu - 14 inchPikachu The mouse pokmon. This pokmon has electricity storing pouches on its cheeks. These appear to become electrically charged during the night while Pikachu sleeps. It occasionally discharges electricity when it is dozy after waking up. Pikachu's tail is sometimes struck by lightning as it raises it to check its surroundings. When several of these Pokmon gather, their electricity could build up and cause lightning storms. Squishmallows are made