Because you like Sean Maguire in Good Will Hunting

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

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

Korra is stubborn, outgoing, and faced with huge responsibilities she might not be ready for. See them in The Legend of Korra.

Tobias "Four" Eaton is only afraid of four things, but you should probably be afraid of him. See them in Divergent.

When the Sorting Hat touched Draco Malfoy's head, it placed him in Slytherin, a house that has turned out more dark wizards than any other. See them in Harry Potter Series.

Both brave and foolhardy, Thomas trusts his instincts above all else. See them in The Maze Runner.

Light Yagami has a plan to make a better world, and morals won't stop him. See them in Death Note.

Bedside manner is for chumps, not the brilliant Dr. Gregory House. See them in House M.D..

Hawkeye is most comfortable perched above the action, keeping an eye on everything and using a well-timed arrow to save the day. See them in Marvel Cinematic Universe.

Howl puts the "tortured" in tortured artist. He just wants to be recognized for his work, but no one wants to trust a boy that sorta looks like a bird. See them in Howl's Moving Castle.

His murderous megalomania aside, Loki is quite charming. Just don't mention his strapping older brother; he's a tad jealous. See them in Marvel Cinematic Universe.