Because you like David Wooderson in Dazed and Confused

Scooby-Doo always keeps his priorities in order: eat snacks first, solve mysteries later. See them in Scooby-Doo.

Sidney Prescott is trying to return to life as a regular, teenage girl – one who doesn't cause rooms to go silent when she walks in. See them in Scream.

Larger than life and wealthy beyond measure, Willy Wonka is more than a titan in the sweets industry; he is an arbiter of taste. See them in Charlie and the Chocolate Factory.

Emmet Brickowski is so upbeat it's not even human. Everything is AWESOME! See them in The Lego Movie.

Nicholas Angel is super-dedicated to his job as a police officer. Maybe a little too dedicated. See them in Hot Fuzz.

Michael Bluth is the only sane person in a family of eccentrics. At least, that's how he thinks of himself. See them in Arrested Development.

Stranded on Mars, Mark Watney is armed with quick wits, an electronic diary, disco music, and an undying resolve to make it back. See them in The Martian.

When push comes to shove, the usually overly cautious Luigi has the heart of a hero. See them in Super Mario Bros..

Nomi Marks is a brilliant hacker with an open-minded, accepting spirit. See them in Sense8.

Philip J. Fry accidentally cryogenically froze himself for a millennium. See them in Futurama.