Because you like The Grinch in Dr. Seuss' How the Grinch Stole Christmas

Sydney Bristow is a kick-ass double agent on a mission for revenge. See them in Alias.

Maya Lambert is an obsessive intelligence officer with tunnel vision leading toward Osama bin Laden. See them in Zero Dark Thirty.

Rory Williams is a caring companion whose specialty is looking after others. See them in Doctor Who.

Emma Woodhouse knows what's best for everyone else. Just don't try to tell her what to do. See them in Emma.

Funny, bubbly, and relaxed, Emma has a magnetic personality that makes her the life of the party. See them in Blue is the Warmest Color.

Stewie Griffin is just your average evil-genius, talking, sociopathic baby. See them in Family Guy.

Connor Walsh is arrogant enough to think he's the smartest guy in the room, and quick-witted enough to prove that he is. See them in How to Get Away with Murder.

Fiery, intelligent, and opinionated, Jo March rebels against the restrictions of her era. See them in Little Women.

It's certainly easier to get great footage of crimes when you can guarantee they'll happen. See them in Nightcrawler.

Wearing couture pinstripe suits over his cut abs, banker Patrick has a way with the ladies. But his relationships never end well. See them in American Psycho.

The Terminator is an emotionless killing machine who won't stop until he's changed the future. See them in The Terminator.

A dedicated hedonist, Jack Harkness appreciates raunchy stories, stiff drinks, and excellent bottoms. See them in Doctor Who.