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
Children of the Stones been almost universally praised as an outstanding children's series. Comedian Stewart Lee commended the series in the 2007 BBC Four series "Charlie Brooker's Screenwipe". Lee commented on depictions of teenagers on television in different decades, contrasting "Children of the Stones" with Channel 4's modern drama "Skins", highlighting how "Children of the Stones" was still relevant to a modern audience. Several clips of the story were shown. In 2012 Lee narrated a documentary on the series for BBC Radio Four. It was introduced as "the scariest programme ever made for children", highlighting the eerie music and commenting that it was "the