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Mary Joseph "Mary Jo" Pehl
(born February 27, 1960 in Circle Pines, Minnesota) is an American writer, actress and comedienne. She is best known for her various roles on the television series Mystery Science Theater 3000. She portrayed the sinister Mrs. Pearl Forrester, the late Dr. Clayton Forrester's mother, as well as serving as one of the show's writers.

She later became the first former MST3K performer (other than the main three) to be a guest riffer at RiffTrax. She was also a regular riffer for Joel Hodgson's Cinematic Titanic.


See Main Article Mary Jo Pehl's Complete Riffography

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