Penelope Spectra

Personality
Penelope Spectra bears a very strong need of being young and beautiful, going though unscrupulous means in order to keep her youthful appearance, and freaking out if she becomes old or ugly. She might be one of the most sadistic ghosts in the show, along with her assistant Bertrand, as they happily attempt to kill people (first Jazz, then all of the Casper High students) in order to accomplish their plans. She is smart and dissimulative, as she persuades many people to think that she is really a shrink, and she presumably has remained much time in the human world feeding on the misery of students. This also indicates her deep knowledge on psychology, as shown when she uses her falsely kind words to expose the teenagers to their deepest fears, leaving them depressed.