Because you like Piper Halliwell in Charmed

Helena is a mentally unstable, childish, and completely merciless. And most of all, she's an unstoppable killer. See them in Orphan Black.

Liesel Meminger is trying to ease the suffering of those around her, German and Jew alike. See them in The Book Thief.

When he's not working as a detective, Lucifer is driving around in a black convertible or having one-night stands. See them in Lucifer.

There's nothing like discovering dear old dad is a serial killer to send you into an (understandable) funk. See them in Hannibal.

Waylon Smithers would do anything for his boss, and would love to do a few things *to* him. See them in The Simpsons.

Audrey Horne may seem inquisitive and charming, but she can turn on a dime. See them in Twin Peaks.

Will Turner is an earnest, lovelorn blacksmith's assistant with an adventurous spirit. See them in Pirates of the Caribbean: the Curse of the Black Pearl.

A no-nonsense pro, Agent K has dedicated his whole life to his job. See them in Men in Black.

A passionate paleontologist with interests no one seems to share, Ross Geller tries to find love despite his past of abandonment and an awkward personality. See them in Friends.

A Washington DC fixer, Olivia Pope can make roadblocks disappear with a single phone call. "It's handled" is her life motto. See them in Scandal.

In a rag-tag group of kids determined to take down the imperialistic Fire Lord, Katara is the glue that holds them together. See them in Avatar: The Last Airbender.