Jeannie's evil fraternal twin sister, mentioned in a second-season episode (also named Jeannie – since, as Barbara Eden's character explains it, all female genies are named Jeannie — and also portrayed by Barbara Eden, in a brunette wig), proves to have a mean streak starting in the third season (as in her initial appearance in "Jeannie or the Tiger?"), repeatedly trying to steal Tony for herself, with her as the real "master".