Because you like Eli in Let the Right One In

Although Jareth seems like he's just a harmless romantic, his powers make him a formidable foe. See them in Labyrinth.

A jealous woman is dangerous. A jealous assassin woman like Elle Driver is even more so. See them in Kill Bill vol. 1.

In charge of stocking the office's supply of cigarettes and liquor, Joan Holloway could run the whole company if they would let her. See them in Mad Men.

Faith balances her adventurous thrill-seeking attitude with a righteous passion for justice. See them in Mirror's Edge.

Cooper says he used to look up at the sky and wonder at our place in the stars, but now he looks down and worry about our place in the dirt. See them in Interstellar.

Chris Chambers is from a family of social outcasts and criminals, and he wants more than anything to avoid ending up like them. See them in Stand By Me.

Although life in a post-apocalyptic world is far from easy, Julie Grigio maintains her sense of humor. See them in Warm Bodies.

Susie Salmon has a big heart, even though it's not beating anymore. See them in The Lovely Bones.

This cannibalistic villain may be a loner, but Killer Croc doesn't have problems with self-confidence. See them in Suicide Squad.

A literal fallen star, Yvaine is temperamental, sarcastic, and a bit on edge. See them in Stardust.