Because you like Rupert Giles in Buffy the Vampire Slayer
Samantha Jones is a try-sexual who'll try anything once. See them in Sex and the City.
Rory Williams is a caring companion whose specialty is looking after others. See them in Doctor Who.
Don't tell anyone Kate Austen was under arrest when the plane crashed. See them in Lost.
Peter Venkman's "research" projects are designed to get undergraduate students to sleep with him. Though it turns out he can bust ghosts. See them in Ghostbusters.
Michael Moscovitz is a high school student of few words but a lot of heart. See them in The Princess Diaries.
Give in to the dark side with vampire Lestat; it's more fun. See them in Interview with the Vampire: The Vampire Chronicles.
As a doctor-in-training, John Dorian should have his head in the game. But most of the time, it's in the clouds. See them in Scrubs.
Marge Simpson is a mostly happy housewife and subscriber to Sponge and Vacuum Magazine. See them in The Simpsons.
Nicholas Angel is super-dedicated to his job as a police officer. Maybe a little too dedicated. See them in Hot Fuzz.
A brave "Young Wolf," Robb Stark has never lost a battle. See them in Game of Thrones.