Because you like Krusty The Clown in The Simpsons

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

Stranded on Mars, Mark Watney is armed with quick wits, an electronic diary, disco music, and an undying resolve to make it back. See them in The Martian.

Margo loves mysteries so much that she becomes one. See them in Paper Towns.

Usually the life of the party, Laszlo is now seriously planning the vampiric takeover of the New World. Or at least Staten Island. See them in What We Do In The Shadows.

Spike is punk meets vampire meets romantic poet. See them in Buffy the Vampire Slayer.

A cheerful alien, E.T. just wants to phone home. See them in E.T. the Extra-Terrestrial.

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

Carrie Bradshaw is a sex columnist addicted to expensive shoes, Cosmopolitan martinis, and unavailable men. See them in Sex and the City.

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.

A responsible kid, Hugo Cabret is still capable of flights of fancy. See them in Hugo.

Neytiri is an accomplished woman with no patience for stupidity. See them in Avatar.

Small in stature, Clara Oswald has a big appetite for adventure. See them in Doctor Who.