Because you like Vito Corleone in The Godfather

On the outside, Gwen seems meek and calm. But she has an inner core of steel. See them in Merlin.

Leatherface's moods change with his masks. See them in The Texas Chainsaw Massacre.

Who needs friends when you're the King of Duelists? See them in Yu-Gi-Oh! .

There's more to this sweet, caring landlady than meets the eye. See them in Sherlock.

His name is Inigo Montoya and whoever killed his father should be prepared to die. See them in The Princess Bride.

Flexibility is more than Helen Parr's superpower. It's a key tenet of her personality that allows her to be both firm and understanding. See them in The Incredibles.

Margaery Tyrell is one of the most adept and charming liars there is. See them in Game of Thrones.

Give in to the dark side with vampire Lestat; it's more fun. See them in Interview with the Vampire: The Vampire Chronicles.

There's erratic, and then there's Senor Chang. See them in Community.

Carrie Bradshaw is a sex columnist addicted to expensive shoes, Cosmopolitan martinis, and unavailable men. See them in Sex and the City.

Diana Prince is using a truth-telling lasso and super-strength to make Earth a little more like Paradise. See them in DC Extended Universe.

A few millennia in the mortal realm have caused DEATH to be quite enamored of life. See them in Discworld.