Because you like Dewey Finn in School of Rock

Gilderoy Lockhart's biggest idol is himself. See them in Harry Potter Series.

An alien, a time-traveler, and an esper are following Haruhi Suzumiya, who – unknown to herself – is a near-omnipotent reality warper. See them in The Melancholy of Haruhi Suzumiya.

If anyone can stay optimistic and friendly under harsh alien rule, it's Alyx Vance. See them in Half-Life 2.

Stan Marsh is a fourth grader who is the ladies man of his classroom. See them in South Park.

Roxie Hart can shoot for the stars even from behind bars. See them in Chicago.

Derek Shepherd is a talented and passionate neurosurgeon. Some people call him McDreamy. See them in Grey's Anatomy.

Number Five is a 58-year-old man trapped in his 13-year-old body. See them in The Umbrella Academy.

A neurotic people pleaser, Tom Wambsgans is both ambitious and spineless. See them in Succession.

Anastasia Steele's new boyfriend Christian might as well come with a warning label that reads "Beware: Severe Issues That Might Warrant a Trip to Dr. Phil." See them in Fifty Shades of Grey.

Give in to the dark side with vampire Lestat; it's more fun. See them in Interview with the Vampire: The Vampire Chronicles.

If it were up to her, Merida would spend her days practicing archery and swordfighting, riding her horse, and exploring the Highlands. See them in Brave.

Tina Goldstein is better at getting the job done than following the rules. See them in Fantastic Beasts and Where To Find Them.