Because you like Clementine Kruczynski in Eternal Sunshine of the Spotless Mind
Christine Daae has been secretely taking lessons from a phantom musician. It sounded less creepy in her head. See them in The Phantom of the Opera.
Turanga Leela is the daughter of two mutants who live in the sewers below New York City. See them in Futurama.
Joey Potter is a low-key girl next door in love with her best friend. See them in Dawson's Creek.
Hoban Washburne shows you can be a hotshot space pilot *and* play with dinosaurs. See them in Firefly.
Leslie Burke is bold, courageous, and imaginative enough to create a world from scratch. See them in Bridge to Terabithia.
Alyssa Foley is a blunt and crass teenage runaway. See them in The End of the F World.
A powerful mob boss, Vito Corleone is always making offers people can't refuse. See them in The Godfather.
Marge Simpson is a mostly happy housewife and subscriber to Sponge and Vacuum Magazine. See them in The Simpsons.
The Little Prince is a childlike wonder personified in a tiny package. See them in The Little Prince.
Relentlessly cheerful and optimistic, Erin Hannon is an office receptionist. See them in The Office.
Lady Macbeth takes being a powerful woman to a whole other level. See them in Macbeth.