Because you like Montgomery Scott in Star Trek
Andrea Sachs' boss is not happy unless everyone around her is panicked, nauseous or suicidal. See them in The Devil Wears Prada.
Severus Snape is a misanthropic potions teacher with a vindictive streak. See them in Harry Potter Series.
Shrek is a nasty-on-the-surface ogre with a heart of gold and an earful of wax. See them in Shrek.
Arguably the world's worst boss, Michael Scott is desperate for love, praise and a suggestion for an improv scene. See them in The Office.
Ramona Flowers is a delivery girl who's been through her fair share of bad breakups. Super-bad breakups! See them in Scott Pilgrim vs. the World.
Ciel Phantomhive is a haughty teenage nobleman who doesn't suffer fools gladly. See them in Black Butler.
Rukia Kuchiki is a cool and collected warrior who has trouble opening up to anyone. See them in Bleach.
Tobias "Four" Eaton is only afraid of four things, but you should probably be afraid of him. See them in Divergent.
Korra is stubborn, outgoing, and faced with huge responsibilities she might not be ready for. See them in The Legend of Korra.
Liv Moore is a sarcastic high-achiever turned morally conflicted zombie. See them in iZombie.
Joey Tribbiani's true passions in life are acting, sandwiches, football, sex, and asking ladies, "how you doing?" See them in Friends.