Because you like Liesl von Trapp in The Sound of Music

Detective Alec Hardy doesn't let anyone get too close to him. See them in Broadchurch.

Donkey is proof that if you're annoying enough you can change the world; he's the reason that his friend Shrek does, well, anything. See them in Shrek.

Most kids hope for a car for their 16th birthday, but Mia Thermopolis' present is a country to rule. See them in The Princess Diaries.

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

Protecting Earth from mystical threats and training new members, Ancient One has her hands full with her latest recruit Stephen Strange. See them in Marvel Cinematic Universe.

Troy Bolton is a triple threat: singing, dancing, and basketball. See them in High School Musical.

Sue Sylvester has a win-at-all-costs philosophy, a bizarre fixation on a school singing club, and a fashion style that involves a red tracksuit. See them in Glee.

Danny Zuko's car is auto-matic. Its system-matic. Its hyyyyydro-matic. Why, its greased lightning! See them in Grease.

Claire Standish is a popular, perfect princess who's deeper than she seems. See them in The Breakfast Club.

While Fantine's gentleness has led others to take advantage of her, it ultimately forces her to become stronger. See them in Les Miserables.

This power-hungry Time Lord calls himself the "master of all." Bonus: he has 13 lives. See them in Doctor Who.

Told her son will one day save the world, Sarah Connor dedicates her life to training him to do just that. See them in The Terminator.