From Bulbapedia, the community-driven Pokémon encyclopedia.
Jigglypuff is one of the main characters of Pokémon PiPiPi Adventure. Her family is apparently rich -- she and her sister Wigglytuff live in a mansion with maids and a butler (Squirtle).
Jigglypuff is very spoiled. She's used to being treated like a little princess and always getting her own way. She also loves to cook, but everything she makes tastes absolutely vile.