Wiggs (The Celestial Toymaker)

Mrs Wiggs was one of the deadly pawns, along with Sergeant Rugg, used by the Celestial Toymaker against Steven Taylor and Dodo Chaplet when they were trapped in his realm. Her appearance was that of a female cook. When not in a contest, Mrs Wiggs stayed in doll form. (TV: The Celestial Toymaker)

Behind the scenes
Bearing in mind that Cyril, the Knave of Hearts and the Kitchen Boy were all the same person, this may have been the case with Mrs Wiggs, Clara the Clown and the Queen of Hearts. However, this was never confirmed on-screen.