Because you like Rick Blaine in Casablanca

Simon Belmont is a vampire hunter bravely carrying on the family business. See them in Castlevania.

There must be quite a lot of fellows who haven't got anybody to bring them tea in the morning. Bertie Wooster is lucky to have his valet, Jeeves. See them in Jeeves and Wooster.

If this slick ad man doesn't like the conversation, he changes it—while drinking and smoking. See them in Mad Men.

Riggan Thomson is a washed-up movie star running from his inner demons. Alas those inner demons look just like the superhero he used to play. See them in Birdman.

Beware! Anton Chigurh carries a coin with him, which he forces his victims to flip to decide whether they will live or die. See them in No Country for Old Men.

A powerful mob boss, Vito Corleone is always making offers people can't refuse. See them in The Godfather.

Marv is a brutish but principled thug who'd be right at home on an ancient battlefield. See them in Sin City.

Roger Kint is a nervous, weak, ham-handed criminal. We think. See them in The Usual Suspects.

Though she can seamlessly flit between glamorous identities, Sydney Prosser is more vulnerable than she pretends to be. See them in American Hustle.

Hans Landa doesn't seem to have issues with Jews, but he hunts them because he's determined to do his job well. See them in Inglourious Basterds.

Brandon Teena is an adventurous young man with the courage to be himself. See them in Boys Don't Cry.