Because you like Lynn Bracken in L.A. Confidential
Chaos is what killed the dinosaurs, and there's nothing Jason "J.D." Dean loves more than chaos. See them in Heathers.
Artemis Fowl understands the way of the world. If he wins, he's a prodigy. If he loses, then he's crazy. That is how history is written. See them in Artemis Fowl.
A suave demon, Crowley grants humans their wishes in exchange for their soul, only to find loopholes that benefit him. See them in Supernatural.
There is never a dull moment with Jim Moriarty: expect booze and sing alongs in between all of the homicide. See them in Sherlock.
This isn't the Captian Hook of your nightmares; he's charming and devilishly handsome. See them in Once Upon a Time.
Jim Halpert is a master at the art of making it through the work day, including participating in an office Olympics. See them in The Office.
Severus Snape is a misanthropic potions teacher with a vindictive streak. See them in Harry Potter Series.
Part of an elite team of investigators, Abby Sciuto is the happiest Goth to ever work in law enforcement. See them in NCIS.
John Watson is haunted by his past (who isn't) but he's starting to branch out with some help from a world class detective. See them in Sherlock.
Gru's more misunderstood than evil, and if he'd rule over the world like he takes care of his three daughters, we'd be in good hands. See them in Despicable Me.
Even the smallest person can change the course of the world, if he's brave enough. See them in The Lord of the Rings.