Because you like Don Quixote in Don Quixote
Anna Karenina doesn't want to be a respectable woman any more. She thinks respect was invented to cover the empty place where love should be. See them in Anna Karenina.
The Little Prince is a childlike wonder personified in a tiny package. See them in The Little Prince.
Xena's a warrior on a redemptive quest who excels in extreme sports and uses a whip to block axes in mid-air. See them in Xena Warrior Princess.
Sarah Kerrigan is pretty much the Queen Bitch of the Universe. See them in StarCraft .
Alien insists on taking the party with him wherever he goes. And if you're lucky, you'll get to see his gun collection. See them in Spring Breakers.
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.
David Wooderson has clocked in hundreds of hours cruising around town looking for fun. See them in Dazed and Confused.
Artemis Fowl understands the way of the world. If he wins, he's a prodigy. If he loses, then he's crazy. That is how history is written. See them in Artemis Fowl.
Father to a murdered son and husband to a murdered wife, Maximus Decimus Meridius will have his vengeance. See them in Gladiator.