Because you like Daniel LaRusso in The Karate Kid
Father to a murdered son and husband to a murdered wife, Maximus Decimus Meridius will have his vengeance. See them in Gladiator.
Community-driven but practical, Calvin Palmer is a natural leader even if he doesn't always see it. See them in Barbershop.
Both intelligent and empathetic, Remus Lupin is worn down by the weight of a secret. See them in Harry Potter Series.
Carl Fredricksen is a crotchety old man who may just have it in him to take one last, great adventure. See them in Up.
Holly Golightly spends so much time trying to be other people's dream girl, she doesn't really know what kind of girl she actually is. See them in Breakfast at Tiffany's.
An exuberant prankster, Naruto Uzumaki craves acknowledgement of any kind. See them in Naruto.
Not only could Hellboy avenge your death, he'd also have a sense of humor about it and not let it ruin the rest of his night. See them in Hellboy.
A believer in the pursuit of justice, Garrus Vakarian hates it when bad guys slip through the cracks of the bureaucratic justice system. See them in Mass Effect.
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.