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Although in the books she is shown as a serious and cruel witch, in the TV adaptations Cuca has an angrier and incompetent personality. She can be considered a bogeyman for always abduct children to devour them, but can never eat anyone. She also shares a rivalry withEmília the Ragdoll, one of the main characters who often foils her plans.While in the original TV series she had a fat and ugly appearance, later depictions gave her a more slender body with a more feminine appearance, even wearing a red dress which gave her a dominatrix feel. In the latest TV series, she is given a hunchback henchman named Pesadelo (Nightmare), who is never present in the books.