Because you like Juliet Burke in Lost

Everyone Barney Stinson knows is getting married or pregnant. But he's just getting more awesome. See them in How I Met Your Mother.

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

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.

Usagi Tsukino may look like a lazy teen, but when Usagi conjures up her alter ego and calls her Sailor Scout team, no villain stands a chance. See them in Sailor Moon.

An escaped convict on a mission, Sirius Black is brooding, brave, and reckless. See them in Harry Potter Series.

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

What Ron Weasley lacks in motivation and book smarts, he makes up for in loyalty and street smarts. See them in Harry Potter Series.

Phoenix Wright is an easygoing defense attorney who is rarely defensive. See them in Ace Attorney Series .

When a half-breed breaks the rules, John Constantine deports them straight back to hell. He's trying to buy his way into heaven. See them in Constantine.

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

While Cassie Ainsworth's head is always in the clouds, her heart is always in the right place. See them in Skins.