Molly is a teenage girl who is one of the main characters of The Basil Brush Show appearing in every episode up to it's fifth series. Molly, like most of the main characters of the series, lives in Stephen's Flat.
Molly is Stephen's niece and Dave's older sister whose parents left to go on a dig before the first episode of the series. She is portrayed as the sensible character, trying to reason with the characters whenever they make a bad decision but its has been shown that she can become very violent. Molly is shown to also be very clever and witty, also doing well at school.
From series five, Molly only appears in a few episodes, as a recurring character, explained away as that she was missing as she went for some milk, with Lucy partially replacing her character-type.