Because you like Donna Noble in Doctor Who

A powerful dragon-hunting warrior, Dovahkiin is destined for great things. See them in The Elder Scrolls V: Skyrim.

A courageous boy robot, Mega Man is dedicated to achieving everlasting peace. See them in Mega Man.

V is a violent anarchist with literally nothing left to lose. But, he might have a point. See them in V for Vendetta.

Ethan Hunt's mission, should he chose to accept it, is to save the world from impossible threats. See them in Mission: Impossible.

Big Boss is a disillusioned mercenary commander who wants to create a world for soldiers (and soldiers alone). See them in Metal Gear Series.

Vincent Vega likes a good steak, a cheap milkshake, and killing a target without anything going wrong. See them in Pulp Fiction.

Joey Tribbiani's true passions in life are acting, sandwiches, football, sex, and asking ladies, "how you doing?" See them in Friends.

You don't teach a class called "How To Get Away With Murder" without knowing a thing or two about getting away with things. See them in How to Get Away with Murder.

Bojack Horseman is a former sitcom star who loves sharing his opinions with anyone who will listen. Oh, and drinking. A lot! See them in Bojack Horseman.

It turns out the girl of your dreams just might have dreams of her own. See them in (500) Days of Summer.

Few high school students could be less concerned with labels. See them in Ouran High School Host Club.

This is not a democracy. According to Torrance Shipman, it's a "cheerocracy." See them in Bring It On.