Because you like Gary the Snail in SpongeBob SquarePants

James Wilson is a compassionate doctor who willingly plays the sidekick. See them in House M.D..

Just because Dracula wants to suck your blood doesn't mean he's not a gentleman. See them in Dracula.

Beware! Anton Chigurh carries a coin with him, which he forces his victims to flip to decide whether they will live or die. See them in No Country for Old Men.

A formerly adventurous playboy, Will Traynor has become cynical by what life has thrown at him. See them in Me Before You.

Dante Alighieri is a crusader fighting his way to absolution. See them in Dante's Inferno.

Think you grew up fast? At 12, Mathilda is an aspiring assassin eager to avenge her family's murder. See them in Leon: The Professional.

Gruff and efficient, Sam Fisher protects a nation that can never admit he exists. See them in Tom Clancy's Splinter Cell.

Tidus is upbeat, carefree, and desperate not to become his father. See them in Final Fantasy Series.

In Dennis Reynolds' mind, only a psycho wouldn't have a six-part system to bring home women. And he should know. See them in It's Always Sunny in Philadelphia .

There is never a dull moment with Jim Moriarty: expect booze and sing alongs in between all of the homicide. See them in Sherlock.