Because you like Elaine Benes in Seinfeld
Ethan Hunt's mission, should he chose to accept it, is to save the world from impossible threats. See them in Mission: Impossible.
It turns out the girl of your dreams just might have dreams of her own. See them in (500) Days of Summer.
Frederick Frankenstein is an eccentric (O.K., maybe a little insane) professor who is excited to be delving into his family's past. See them in Young Frankenstein.
A Wakandan spy, Nakia is capable, caring, and just the right amount of stubborn. See them in Marvel Cinematic Universe.
Anyone who's said "Don't worry, it's just a dream" never met Freddy Krueger. See them in A Nightmare on Elm Street.
When Jessica Jones is not throwing back drinks, she's taking down bad guys with her strength, detective skills, and foul-mouthed insults. See them in Marvel Cinematic Universe.
It's time somebody has to take over. It might as well be Fish Mooney. See them in Gotham.
Though he may be blind, Chirrut Imwe sees the power of the force more than most. See them in Rogue One.
Poison Ivy is a seductive, venomous botanist laments the fact that there are so many people to kill, yet so little time. See them in DC Extended Universe.
A free-spirited artist, Marjane Satrapi is living under the shadow of an oppressive society. See them in Persepolis.
Andy Dwyer might not be completely literate, but he makes up for it in spirit. See them in Parks and Recreation.