Because you like Joel Barish in Eternal Sunshine of the Spotless Mind

Arwen has to choose between a life of loneliness or love and inevitible death, both rather unfortunate options. See them in The Lord of the Rings.

Pro tip: the psych ward is not the best place to find a mentor like Lisa Rowe. See them in Girl, Interrupted.

Megamind is searching for purpose in a supervillain life without a superhero to fight. See them in Megamind.

Sensual, wild, and with a penchant for controlled substances, Lily is a ballet dancer who isn't afraid to let loose. See them in Black Swan.

While his twin tries to save lives, Millions Knives does the best to end them. See them in Trigun.

A stylish agent, Agent J would rather improvise than play by the rules. See them in Men in Black.

Jessica Rabbit isn't bad. She's just drawn that way. See them in Who Framed Roger Rabbit.

Driven yet empathetic, Emily Prentiss brings humanity to the pursuit of inhuman killers. See them in Criminal Minds.

Vanellope von Schweetz is princess of the Sugar Rush game who could care less about being royal. See them in Wreck it Ralph.

White Witch's heart is as frozen as the land she rules. See them in The Chronicles of Narnia.

It's easy to see why Poe Dameron would side with the rebellion: he's bad at taking orders, likes to show off, and is committed to the cause. See them in Star Wars Series.