“Pika-ah-ah-AHCHOO!”
—Pikachoo
The Pikachoo is a Pikachu with a very bad cold, is one the very few Pikachus that isn't evil, like Stinkachu. It has a very minor role in the Pokemon Anime, and the only thing it does is sneeze. He is always carrying a tissue. In one Pokemon Anime episode, he goes to a random town and gives everybody a cold. He later got beaten up by Ash's Pikachu. However, our Heroes got the virus, and it turned out that is was the Pikachu Flu. That and the fact they have to save themselves from becoming Pikachus is the conflict of the episode. Ever since that, he stayed away from Ash Ketchem and his gang of random guys. Pikachoo currently has many minor appearances; most are so minor that nobody even talks about him.
In the Unpokemon Channel series Blastoid-And-Friends, Pikachoo, for an unexplained reason, suffers from a looping heart attack disease, so Blastoid and The creature from the black lagoon undertake an adventure to get kidnap Mew and a demon dude to use their semen to save him.