Because you like Agent Smith in The Matrix
A scary monster on the outside, James P. Sullivan is really a softie on the inside. See them in Monsters, Inc..
Kara "Starbuck" Thrace will beat you in cards, drink you under the table, then fly circles around you in her fighter plane. See them in Battlestar Galactica.
Remy Hadley is a closed book—a cynical, super-smart closed book. See them in House M.D..
Born into luxury, Sybil Crawley wants to find real purpose and meaning in her privileged life. See them in Downton Abbey.
C is for cookie, and that's more than good enough for him. See them in Sesame Street.
Although Theon Greyjoy is treated well, he's still essentially a hostage. And that isn't so easy for him to forgive. See them in Game of Thrones.
Bodhi Rook is a defected pilot for the Galactic Empire dead set on destroying the Death Star. See them in Rogue One.
His name is Inigo Montoya and whoever killed his father should be prepared to die. See them in The Princess Bride.
A man of the court, Lord Varys knows how to manipulate it better than anyone. See them in Game of Thrones.
Arwen has to choose between a life of loneliness or love and inevitible death, both rather unfortunate options. See them in The Lord of the Rings.
Darcy Lewis is a razor-sharp scientist studying things that science can't explain. See them in Thor.