Which Vicki Lawrence character originated on the Carol Burnett show went on to get her own spin off?

is known for the many characters she originated on CBS's The Carol Burnett Show, where she appeared from 1967 to 1978, for the entire series run. These were different sketches and parodies of different movies, TV-series and shows.

One Lawrence's character, The Family matriarch Thelma Harper/Mama, would later be the central character of the television situation comedy series Mama's Family on NBC and, later, in first-run syndication. The actress is still active today, but Mama remains the most notable and famous role in her acting career. Vicki performs live as a comedian and works as a singer as well.