Because you like Deandra "Dee" Reynolds in It's Always Sunny in Philadelphia
Louis de Pointe du Lac is wanting to find a way of living that doesn't make him miserable. See them in Interview with the Vampire: The Vampire Chronicles.
Experiment 626 was designed for one thing: to destroy everything he touches. See them in Lilo & Stich.
A born psychopath, don't expect Michael Myers to understand the difference between right and wrong. See them in Halloween.
Kazuma Kiryu's legendary strength and exploits have earned him the nickname of Dragon of Dojima. See them in Yakuza.
Jasper Jordan is trying his best to make it through the night. See them in The 100.
Roger Kint is a nervous, weak, ham-handed criminal. We think. See them in The Usual Suspects.
Few can match this dwarf when it comes to self-confidence. Gimli is as eager for a good time as he is for a fight. See them in The Lord of the Rings.
Rose Tyler may have not done too well in school, but she's certainly holding her own in space. See them in Doctor Who.
Don't ask the ruthless queen of the Tokyo underworld any questions unless you're fine with losing a limb. See them in Kill Bill vol. 1.
Hoban Washburne shows you can be a hotshot space pilot *and* play with dinosaurs. See them in Firefly.