Cassandra

 is a powerful witch who sits on the Witches Council. She leads a coven that meets on Witch Mountain for Halloween ceremonies.

Cassandra sends Paula, a Hit Witch, after Paul Thurston to make his life miserable because he mocked witches on his television show. She forbids Minerva to tell Tabitha about the plan. When Minerva spills the news to Tabitha, Cassandra puts a spell on Minerva's taste buds so that everything she eats tastes horrible.

Later, she announces that the Witches Council has reversed its law against mixed marriages. She creates a love potion so Tabitha and Paul will fall in love and marry, but in the end, she performs the wedding ceremony for Dr. Bombay and his mortal nurse Gloria instead.