Willo the Wisp beech wood in Oxfordshire, near the director's home. Kenneth Williams provided voices for all of the characters. The principal narrator, Willo the Wisp, was a blue, floating creature drawn as a caricature of him, while the name refers to the ghostly light will-o'-the-wisp from folklore. The other main characters were Arthur the caterpillar (as a gruff cockney), Mavis Cruet, a plump, clumsy fairy with an erratic, magic wand, and the principal antagonist, Evil Edna, a witch in the form of a walking, talking television set who could zap people with her aerials. Other characters included Carwash, a snooty bespectacled cat
Will-o'-the-wisp back from the dead to do God's penance, but instead attacks people for vengeance. While it mostly takes part in harmless mischievous acts, the fi follet sometimes sucked the blood of children. Some legends say that it was the soul of a child who died before baptism. Will-o-the-wisp is a part of the folklore in Brazil, Argentina, Colombia, Venezuela and Uruguay. Boi-tatá () is the Brazilian equivalent of the will-o'-the-wisp. Regionally it is called "Boitatá", "Baitatá", "Batatá", "Bitatá", "Batatão", "Biatatá", "M'boiguaçu", "Mboitatá" and "Mbaê-Tata". The name comes from the Old Tupi language and means "fiery serpent" ("mboî tatá"). Its great