Because you like Lina Mayfleet in The City of Ember

A fourth grader without a moral compass, Eric Cartman lives on KFC, Taco Bell, Pizza Hut, and Cheesy Poofs. See them in South Park.

Just a hint of human emotion lurks under the enigmatic exterior of Rei Ayanami. See them in Neon Genesis Evangelion.

A self-professed psychopath, James kills small animals for fun. After getting bored of that, he is ready for an ambitious murder. See them in The End of the F World.

Winn Schott is just your friendly neighborhood superhero support system. See them in Supergirl.

He may forget his homework, lose his toad, and fall off brooms, but Neville Longbottom can also single-handedly destroy villains. See them in Harry Potter Series.

Tony Stonem is the golden boy of Bristol. Problem is, he knows it. See them in Skins.

Clay Jensen's friend Hannah is gone, and he is determined to find out why even if that brings him pain. See them in Thirteen Reasons Why .

Casey Gardner is an angsty teenage girl with quite a bit of sass that keeps getting her in trouble. See them in Atypical.

With a unique ability to empathize with killers, Will Graham helps society but his sanity pays the price. See them in Hannibal.

There's nothing like discovering dear old dad is a serial killer to send you into an (understandable) funk. See them in Hannibal.