Born in Somerset, Scott spent 19 years working as a Pontins Blue Coat, where she honed her live entertainment skills, before collaborating with Hull on the popular children's show.
Her niece Gina Mear wrote on Facebook on Wednesday: "My dear aunty Carol lost her courageous fight against cancer yesterday".
When Rod was approached to make a new show to be broadcast at the launch of Central Independent Television, he created the series Emu's World, and approached Carol to play the witch.
Sharing a picture of her with her family, she wrote: "My dear aunty Carl passed away yesterday, RIP Grotbags, I will miss you".
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Era da tempo per rompere con questa lunga serie di presidenze maschili venisse interrotta per fare spazio al talento brillante e di grande ispirazione di una donna nella nostra giuria.
But before making her name in children's programmes in the 1980s and early 1990s with Rod Hull and Emu on The Pink Windmill Show, she had learnt her trade as a singer on the tough northern clubs circuit in the 60s and 70s.
Fans commented on their shock of Scott's death on Twitter.
Among those paying tribute was Rufus Hound, who said she was "an icon for folk of my generation". The pair remained good friends until his death in 1999. To many of you she was Grotbags - a legend!
Also starring puppeteer Richard Coombs, Grotbags ran on ITV for three series between 1991 and 1993, with each episode following the antics of the green witch and her minions at her Gloomy Fortress.