Because you like Aaron Hotchner in Criminal Minds

Foul mouthed and disturbingly comfortable with violence, Hit-Girl is a precocious assassin who doesn't need anyone's protection. See them in Kick-Ass.

Holly Golightly spends so much time trying to be other people's dream girl, she doesn't really know what kind of girl she actually is. See them in Breakfast at Tiffany's.

There's no obstacle too great for this charismatic treasure-hunter. See them in Uncharted.

After figuring out how both the light and dark halves of his soul could co-exist, Jak is maturing into a real hero. See them in Jak and Daxter.

While Fantine's gentleness has led others to take advantage of her, it ultimately forces her to become stronger. See them in Les Miserables.

Severus Snape is a misanthropic potions teacher with a vindictive streak. See them in Harry Potter Series.

Emily Fields has been very guarded, careful of whom she trusts and reveals her secrets to. See them in Pretty Little Liars.

Sheldon Cooper is brilliant in every way except, well, interacting with any human being. See them in The Big Bang Theory.

Dipper Pines is investigating a truly strange town during the world's wildest summer vacation. See them in Gravity Falls.

Eren Jaeger will erase the Titans from this world until not a single one remains. See them in Attack on Titan.

Ellen Ripley defines the word "badass." When she's not leading her crew on an interstellar voyage, she's slaying terrifying creatures. See them in Alien.

For Celty Sturluson, it's rather upsetting to be the only headless girl in a city filled with full-bodied humans. See them in Durarara!!.