Polokus decided to use his powers to bring people to the world. He began with the magical beings, and dreamed up the fairies. They are his emissaries. After the first 4 Lums, they made the Silver Lums which give you your special powers.
Fairies are a race of magical creatures which exist in the Glade of Dreams. Fairies possess great powers, and appear in almost every Rayman game. All known fairies are female, and they come in a variety of different appearances and sizes. Their magic powers vary, though most of them serve as the providers of many of Rayman's powers, as they can create Silver Lums. Fairies are also often tasked with the protection of the Heart of the World.