|"Ghost girl" is not an official name.|
|Residence||Castle Manor, Elwood City|
|Cartoon debut||"The Fright Stuff"|
During Muffy's party, the girl went down in a "ghost" costume and accidentally got involved in the boys' prank. She moved Muffy and Francine's tape recorder and glow-in-the-dark balloons to the playroom. She then flew into the library in her costume and vanished, scaring the girls. When Binky showed up in a cyclops costume, they realized that she was a real ghost and ran downstairs. Later, her father explained to her that although the boy did ask her to help, scaring people is wrong because it hurts their feelings.Afterwards, she went down with her family in less-scary ghost costumes and joined the party. George complimented on her costume and she said his was cool, too.