Because you like Ender Wiggin in Ender's Game
Leonard Hofstadter is the normal one among his scientist friends, though in fairness that's a low bar. See them in The Big Bang Theory.
Suzy Bishop is only 12, but her withering stare and withdrawn personality are enough to make anyone wilt. See them in Moonrise Kingdom.
Popular jock Andrew Clark is pretty bizarre. He's just better at hiding it, that's all. See them in The Breakfast Club.
A stylish agent, Agent J would rather improvise than play by the rules. See them in Men in Black.
Nina Sayer finally landed the role of prima ballerina, but as tension ramps up in rehearsal, she starts losing her mind. See them in Black Swan.
A sadistic sociopath, Lil Z is helping make the City of God slum a Hell on Earth. See them in City of God.
There isn't a man in the world who executes his job with more finesse than Monsieur Gustave H. See them in The Grand Budapest Hotel.
Though she has the normal insecurities of a 15-year-old, Aurora is both courageous and empathetic. See them in Maleficent.
Liesel Meminger is trying to ease the suffering of those around her, German and Jew alike. See them in The Book Thief.
This power-hungry Time Lord calls himself the "master of all." Bonus: he has 13 lives. See them in Doctor Who.