Because you like Egon Spengler in Ghostbusters

Hanna Marin is a determined girl defined by her ability to transform herself. See them in Pretty Little Liars.

Bart Simpson is an aspiring juvenile delinquent who doesn't want you to have a cow, man! See them in The Simpsons.

Sterling Archer is a fun-loving, car-driving spy extraordinaire. But one can tell his mother didn't hug him as a child. See them in Archer.

Stranded on Mars, Mark Watney is armed with quick wits, an electronic diary, disco music, and an undying resolve to make it back. See them in The Martian.

Leslie Knope can accomplish anything, literally anything, with a little grit and help from her office. See them in Parks and Recreation.

Realizing that New York City was in his blood, Wilson Fisk will now do anything to make Hell's Kitchen a better place. See them in Daredevil.

Red doesn't like to explain herself. She wants her work to do the talking. See them in Transistor.

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

Eleanor puts up a tough front, even when everyone else tries to tear her down. See them in Eleanor and Park .

Emmet Brickowski is so upbeat it's not even human. Everything is AWESOME! See them in The Lego Movie.

Charming and confident, Gus Waters is determined to leave a lasting mark on the world. See them in The Fault in Our Stars.

Shaun is used to being lazy. And now, you're asking him to fight for his life? See them in Shaun of the Dead.