Because you like Kenneth Parcell in 30 Rock

As a scaring Assistant, Mike Wazowski frightens children to collect their screams to be used as a power supply for the city. See them in Monsters, Inc..

Jack Frost would rather crack a joke or throw a snowball than take anything seriously. See them in Rise of the Guardians.

A 100-plus-year-old who looks like a dreamy teenager, Edward Cullen warns girls to avoid him, which makes them want him even more. See them in Twilight.

Bella Swan thinks of it as her job to help her parents and protect her friends, even though it often ends up the other way around. See them in Twilight.

An aloof punk rock goddess, Nana Osaki has a surprisingly big heart. See them in Nana.

Jenna Rink is physically 30 but emotionally 13. She has a better excuse than most. See them in 13 Going on 30.

Her interests include martial arts, interrogation, and hacking. Natasha Romanoff is the ultimate spy. See them in Marvel Cinematic Universe.

Fun and feisty on the outside, Meredith Grey is dark and twisty on the inside. See them in Grey's Anatomy.

Hannah Baker is a buoyant spirit broken by the cruelties of high school. See them in Thirteen Reasons Why .

It's easy for Brian O'Conner to fake his way into the world of extreme racing because he's been popping cars since his teenage years. See them in The Fast and the Furious.

Daenerys Targaryen will take what is hers with fire and blood. Thankfully, she has some dragons by her side. See them in Game of Thrones.

Alison DiLaurentis believes you're always better off with a really good lie. See them in Pretty Little Liars.