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 Will-o'-the-wisp In folklore, a will-o'-the-wisp, will-o'-wisp or ignis fatuus (; Medieval Latin for "fool's fire") is an atmospheric ghost light seen by travelers at night, especially over bogs, swamps or marshes. The phenomenon is known in English folk belief, English folklore and much of European folklore by a variety of names, including jack-o'-lantern, friar's lantern, hinkypunk and hobby lantern, and is said to mislead travelers by resembling a flickering lamp or lantern. In literature, will-o'-the-wisp sometimes have a metaphorical meaning, e.g. describing a hope or goal that leads one on but is impossible to reach, or something one finds sinister