Margaret Szczo Elinner-Gumbucko Wosslo commonly known as Margie, was a witch and a ghost of Shellby Cottage. She has big blue earrings, circular glasses, a long green cloak, and a pale blue blouse.
The Exploratorium, according to Margaret, was small on the outside and massive on the inside. Π (Pi) was one of the numbers she was interested in. Chicken With Teeth and O's Number were some of the people she worked with.