Because you like Sheldon J. Plankton in SpongeBob SquarePants

Insightful about everyone else's neuroses, Rose Lalonde is not as aware of her own. See them in Homestuck.

Given his ability to wrench street signs from the ground, Shizuo Heiwajima is a useful one to have in dangerous Ikekuburo. See them in Durarara!!.

Irene Adler has to use both her brains and her body to survive. Luckily, she's usually the most brilliant person in the room. See them in Sherlock.

Kenzo Tenma would have never guessed that ten-year-old he saved would later become a deadly serial killer intent on "thanking" him. See them in Monster (TV Show).

Clarice Starling is patiently working with one serial killer to stop another. See them in The Silence of the Lambs.

Darlene is a free-spirited hacktivist who follows her own moral compass. See them in Mr. Robot.

Chuck Bartowski is a sweet, laid-back electronics store/top secret government employee. See them in Chuck.

Extremely violent and loyal, Sandor Clegane is called the Hound for a reason. See them in Game of Thrones.

Ciri had a princess upbringing, and some of the facts of common people's lives are a mystery to her. See them in The Witcher.

A crooked cop, Harvey Bullock is the product of a not-so-just criminal justice system. See them in Gotham.

A Silurian lizard woman, Madame Vastra has a penchant for puzzles and interspecies romance. See them in Doctor Who.

A skating genius, Victor Nikiforov dazzles women and men with a single glance. But deep down he's a cheerful goof. See them in Yuri on Ice.