Because you like Huck Finn in The Adventures of Huckleberry Finn

Jane Smith is a stone-cold killer, but you would never know it from looking at her. See them in Mr. & Mrs. Smith.

The only constant in Night Vale is Cecil's hypnotic voice. See them in Welcome to Night Vale.

Undercover as an average high school student, Kallen Stadtfeld is actually most at ease when the action's fast, furious, and dangerous. See them in Code Geass.

Nicky Nichols just wants to settle down with a nice girl, but being in prison is making that a little difficult. See them in Orange Is The New Black.

With an abundant supply of alcohol, nice restaurants, and free will, Crowley is a demon who is thoroughly enjoying his time on Earth. See them in Good Omens: The Nice and Accurate Prophecies of Agnes Nutter, Witch.

A self-professed psychopath, James kills small animals for fun. After getting bored of that, he is ready for an ambitious murder. See them in The End of the F World.

With a unique ability to empathize with killers, Will Graham helps society but his sanity pays the price. See them in Hannibal.

Spencer Reid's super-smarts helps catch killers, and his social awkwardness endears co-workers. See them in Criminal Minds.

He's the great Black Star, and he's come to assassinate you. See them in Soul Eater.

Elio Perlman likes the piano, peaches, and his father's new research assistant a little too much. See them in Call Me by Your Name.

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.

Herion is Mark Renton's favorite drug. He sniffs it, smokes it, swallows it, sticks it up his arse, and injects it into his veins. See them in Trainspotting.