Because you like Zaphod Beeblebrox in The Hitchhiker's Guide to the Galaxy

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

Frank Reynolds is too gross even for the prostitutes he hires. See them in It's Always Sunny in Philadelphia .

Liesel Meminger is trying to ease the suffering of those around her, German and Jew alike. See them in The Book Thief.

Jail hasn't broken Andy Dufresne's spirit, but will his spirit help break him out of jail? See them in The Shawshank Redemption.

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

GLaDOS will supply the food when you get together: a delicious cake. Of course, it could just be a trap so she can kill you. It’s hard to say. See them in Portal Series.

Tifa Lockhart is part mother hen, part martial arts bad-ass. See them in Final Fantasy Series.

Sydney Bristow is a kick-ass double agent on a mission for revenge. See them in Alias.

Wheatley's got an endless supply of bad ideas that he wants to share. See them in Portal Series.

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.