Because you like Regan MacNeil in The Exorcist

Gollum is slimy and seething with hatred, the last person you would want to meet in a dark cave. See them in The Lord of the Rings.

Ron Swanson is the man's man's man's man. See them in Parks and Recreation.

Steven Universe is an excitable youth who likes junk food and trying to save the world. See them in Steven Universe.

There's never a dull moment when this mischievous high-schooler gets up to his hijinks. Save Ferris! See them in Ferris Bueller's Day Off.

Sandy Olsen is out of her head, hopelessly devoted to Danny. See them in Grease.

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

The only thing that can match Rose's looks are her hot temper and free spirit. See them in Titanic.

Severus Snape is a misanthropic potions teacher with a vindictive streak. See them in Harry Potter Series.

Ramona Flowers is a delivery girl who's been through her fair share of bad breakups. Super-bad breakups! See them in Scott Pilgrim vs. the World.

Diana Prince is using a truth-telling lasso and super-strength to make Earth a little more like Paradise. See them in DC Extended Universe.

A plucky 13-year-old with a flair for the dramatic, Kiki is a witch in training. See them in Kiki's Delivery Service.

Growing up isn't easy: Chihiro's parents turned into pigs, she's enslaved at a bathhouse for demons, and oh yeah, she's fading from existence. See them in Spirited Away.