Because you like SHODAN in System Shock

Christian is a romantic who for some reason won't stop singing everything he feels. See them in Moulin Rouge.

Andy Bernard is a preppy Cornell grad who's very likely to break into an acapella performance. See them in The Office.

Petyr Baelish's main assets? A sharp mind, deep pockets, and no scruples. See them in Game of Thrones.

When it comes to flattery, manipulation, and politics, Oswald Cobblepot can play with the best of them. See them in Gotham.

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

Ace pilot Asuka Langley Soryu is confident, haughty, and a little less grown-up than she pretends to be. See them in Neon Genesis Evangelion.

When you live your life in public, like Mima Kirigoe, it's hard to know who you really are. See them in Perfect Blue.

Marty McFly is a skateboarder, aspiring rock star, and reluctant time-traveler. See them in Back to the Future.

Don't worry about this forensic scientist offing you unless you're a serial killer yourself. (You're not, right? Just checking.) See them in Dexter.

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

Nothing inspires dread like the mysterious, masked Man in Black. But what's he hiding? See them in The Princess Bride.

A childlike space cadet, Brittany Pierce has a surprisingly open-minded spirit. See them in Glee.