Because you like Gilderoy Lockhart in Harry Potter Series

The Hastings family is old and powerful, and Spencer will do anything to continue excelling. See them in Pretty Little Liars.

Rainbow Dash's interests include flying, playing pranks, and generally being themost awesome pony around. See them in My Little Pony.

The self-described "ghost with the most" knows the ins-and-outs of specter life like no other. Just ask him. See them in Beetlejuice.

After years of being a nerdy loner, Seth Cohen can't wait to shower charm on his newfound friends. See them in The O.C..

Squidward Tentacles is a pretentious clarinet player in search of peace and quiet. See them in SpongeBob SquarePants.

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

April Kepner is an excellent surgeon, but outside of the operating room, she's more anxious than most. See them in Grey's Anatomy.

Morticia Addams hates anything bright and cheery and loves all things ghoulish, ghastly, and violent. See them in The Addams Family.

If it were up to her, Merida would spend her days practicing archery and swordfighting, riding her horse, and exploring the Highlands. See them in Brave.

Mrs. Lovett is the proud purveyor of the worst, and most grisly, pies in London. See them in Sweeney Todd: The Demon Barber of Fleet Street.

Neil Perry is a brilliant student with an artist's soul. And he's desperate to unleash it. See them in Dead Poets Society.