Because you like Bellatrix Lestrange in Harry Potter Series

Arwen has to choose between a life of loneliness or love and inevitible death, both rather unfortunate options. See them in The Lord of the Rings.

Freddie Freeman is a superhero aficionado with a dark sense of humor. See them in DC Extended Universe.

A born psychopath, don't expect Michael Myers to understand the difference between right and wrong. See them in Halloween.

James Gordon happens to be the one guy in Gotham City with proper morals who doesn't also run around in a cape. See them in DC Extended Universe.

Patrick Star enjoys life's simple pleasures because he can't wrap his brain around anything more complicated. See them in SpongeBob SquarePants.

Quinn Fabray can become a monster when there is something she wants. See them in Glee.

The incomplete experiment of an inventor, Edward Scissorhands was left with blades instead of hands and an unpolished understanding of the world. See them in Edward Scissorhands.

Christine Daae has been secretely taking lessons from a phantom musician. It sounded less creepy in her head. See them in The Phantom of the Opera.

Turanga Leela is the daughter of two mutants who live in the sewers below New York City. See them in Futurama.

Sansa Stark is a fan of all things pretty. Unfortunately, her life is about to get extremely ugly. See them in Game of Thrones.

Squidward Tentacles is a pretentious clarinet player in search of peace and quiet. See them in SpongeBob SquarePants.