Agnes Stonewick

From Muppet Wiki

Agnes Stonewick is an 87-year-old woman whose 15 minutes of fame were catalogued on the game show "Swift Wits" in episode 102 of Muppets Tonight. She is playing for Buffy, a little dog who would rather win a life-time supply of dog treats than be eaten by Carl the Big Mean Bunny. Agnes has a brother, Norm, whom she does not hold in high esteem. Her apparent distaste for him ultimately clouds what might have been her better judgement, and as a result, every clue she's given by Snookie Blyer is returned with a negative connotation to her brother. Despite her obliviousness, she exhibits some minor distress at Buffy's fate.

Incidentally, Agnes also appears to be a member of the Dancing Grandmas seen in episode 204.